{"id":815,"date":"2026-03-16T07:21:04","date_gmt":"2026-03-16T07:21:04","guid":{"rendered":"https:\/\/trieuminh.com\/?p=815"},"modified":"2026-05-27T09:47:00","modified_gmt":"2026-05-27T09:47:00","slug":"phuong-phap-tinh-kich-thuoc-ong-gio","status":"publish","type":"post","link":"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/","title":{"rendered":"PH\u01af\u01a0NG PH\u00c1P T\u00cdNH K\u00cdCH TH\u01af\u1edaC \u1ed0NG GI\u00d3"},"content":{"rendered":"<h1 data-section-id=\"1i3kkmb\" data-start=\"361\" data-end=\"439\"><span class=\"ez-toc-section\" id=\"PHUONG_PHAP_TINH_KICH_THUOC_ONG_GIO_TRONG_HE_THONG_HVAC\"><\/span>PH\u01af\u01a0NG PH\u00c1P T\u00cdNH K\u00cdCH TH\u01af\u1edaC \u1ed0NG GI\u00d3 TRONG H\u1ec6 TH\u1ed0NG\u00a0 HVAC<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"441\" data-end=\"751\">Trong thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng <strong data-start=\"465\" data-end=\"505\">\u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed v\u00e0 th\u00f4ng gi\u00f3 HVAC<\/strong>, vi\u1ec7c <strong data-start=\"512\" data-end=\"544\">t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3<\/strong> l\u00e0 b\u01b0\u1edbc c\u1ef1c k\u1ef3 quan tr\u1ecdng. K\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u qu\u1ea3 v\u1eadn h\u00e0nh c\u1ee7a h\u1ec7 th\u1ed1ng, bao g\u1ed3m kh\u1ea3 n\u0103ng ph\u00e2n ph\u1ed1i kh\u00f4ng kh\u00ed, m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng c\u1ee7a qu\u1ea1t v\u00e0 \u0111\u1ed9 \u1ed3n trong kh\u00f4ng gian s\u1eed d\u1ee5ng.<\/p>\n<p data-start=\"753\" data-end=\"834\">N\u1ebfu <strong data-start=\"757\" data-end=\"785\">\u1ed1ng gi\u00f3 thi\u1ebft k\u1ebf qu\u00e1 nh\u1ecf<\/strong>, v\u1eadn t\u1ed1c gi\u00f3 s\u1ebd t\u0103ng cao, g\u00e2y ra c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0:<\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#PHUONG_PHAP_TINH_KICH_THUOC_ONG_GIO_TRONG_HE_THONG_HVAC\" >PH\u01af\u01a0NG PH\u00c1P T\u00cdNH K\u00cdCH TH\u01af\u1edaC \u1ed0NG GI\u00d3 TRONG H\u1ec6 TH\u1ed0NG\u00a0 HVAC<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#1_Tong_Quan_Ve_He_Thong_Ong_Gio_HVAC\" >1. T\u1ed5ng Quan V\u1ec1 H\u1ec7 Th\u1ed1ng \u1ed0ng Gi\u00f3 HVAC<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#2_Cac_Tieu_Chuan_Thiet_Ke_Ong_Gio\" >2. C\u00e1c Ti\u00eau Chu\u1ea9n Thi\u1ebft K\u1ebf \u1ed0ng Gi\u00f3<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#21_Tieu_Chuan_Viet_Nam\" >2.1 Ti\u00eau Chu\u1ea9n Vi\u1ec7t Nam<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#22_Tieu_Chuan_Quoc_Te\" >2.2 Ti\u00eau Chu\u1ea9n Qu\u1ed1c T\u1ebf<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#3_Bang_Tieu_Chuan_Van_Toc_Gio_Trong_Ong_Gio_HVAC\" >3. B\u1ea3ng Ti\u00eau Chu\u1ea9n V\u1eadn T\u1ed1c Gi\u00f3 Trong \u1ed0ng Gi\u00f3 HVAC<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#31_Van_Toc_Gio_Trong_Ong_Gio_Cap\" >3.1 V\u1eadn T\u1ed1c Gi\u00f3 Trong \u1ed0ng Gi\u00f3 C\u1ea5p<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#32_Van_Toc_Gio_Trong_Ong_Hoi\" >3.2 V\u1eadn T\u1ed1c Gi\u00f3 Trong \u1ed0ng H\u1ed3i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#33_Van_Toc_Gio_Trong_He_Thong_Cong_Nghiep\" >3.3 V\u1eadn T\u1ed1c Gi\u00f3 Trong H\u1ec7 Th\u1ed1ng C\u00f4ng Nghi\u1ec7p<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#4_Cac_Phuong_Phap_Tinh_Toan_Kich_Thuoc_Ong_Gio_Trong_He_Thong_HVAC\" >4. C\u00e1c Ph\u01b0\u01a1ng Ph\u00e1p T\u00ednh To\u00e1n K\u00edch Th\u01b0\u1edbc \u1ed0ng Gi\u00f3 Trong H\u1ec7 Th\u1ed1ng HVAC<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#41_Phuong_Phap_Giam_Dan_Van_Toc_Velocity_Reduction_Method\" >4.1. Ph\u01b0\u01a1ng Ph\u00e1p Gi\u1ea3m D\u1ea7n V\u1eadn T\u1ed1c (Velocity Reduction Method)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#42_Phuong_Phap_Ma_Sat_Dong_Deu_Equal_Friction_Method\" >4.2. Ph\u01b0\u01a1ng Ph\u00e1p Ma S\u00e1t \u0110\u1ed3ng \u0110\u1ec1u (Equal Friction Method)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#43_Phuong_Phap_Phuc_Hoi_Ap_Suat_Tinh_Static_Regain_Method\" >4.3. Ph\u01b0\u01a1ng Ph\u00e1p Ph\u1ee5c H\u1ed3i \u00c1p Su\u1ea5t T\u0129nh (Static Regain Method)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#5_Bang_Do_Day_Ton_Ong_Gio_Theo_Tieu_Chuan_SMACNA\" >5. B\u1ea3ng \u0110\u1ed9 D\u00e0y T\u00f4n \u1ed0ng Gi\u00f3 Theo Ti\u00eau Chu\u1ea9n SMACNA<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#6_Ton_That_Ap_Suat_Trong_He_Thong_Ong_Gio\" >6. T\u1ed5n Th\u1ea5t \u00c1p Su\u1ea5t Trong H\u1ec7 Th\u1ed1ng \u1ed0ng Gi\u00f3<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#61_Ton_That_Ma_Sat_Tren_Duong_Ong\" >6.1. T\u1ed5n Th\u1ea5t Ma S\u00e1t Tr\u00ean \u0110\u01b0\u1eddng \u1ed0ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#62_Ton_That_Qua_Phu_Kien\" >6.2. T\u1ed5n Th\u1ea5t Qua Ph\u1ee5 Ki\u1ec7n<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#7_Vi_Du_Tinh_Kich_Thuoc_Ong_Gio\" >7. V\u00ed D\u1ee5 T\u00ednh K\u00edch Th\u01b0\u1edbc \u1ed0ng Gi\u00f3<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#Buoc_1_Chuyen_Doi_Don_Vi_Luu_Luong\" >B\u01b0\u1edbc 1: Chuy\u1ec3n \u0110\u1ed5i \u0110\u01a1n V\u1ecb L\u01b0u L\u01b0\u1ee3ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#Buoc_2_Tinh_Dien_Tich_Tiet_Dien_Ong_Gio\" >B\u01b0\u1edbc 2: T\u00ednh Di\u1ec7n T\u00edch Ti\u1ebft Di\u1ec7n \u1ed0ng Gi\u00f3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#Buoc_3_Lua_Chon_Kich_Thuoc_Ong_Gio_Thuc_Te\" >B\u01b0\u1edbc 3: L\u1ef1a Ch\u1ecdn K\u00edch Th\u01b0\u1edbc \u1ed0ng Gi\u00f3 Th\u1ef1c T\u1ebf<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#8_Tool_Tinh_Toan_Kich_Thuoc_Ong_Gio_Online\" >8. Tool T\u00ednh To\u00e1n K\u00edch Th\u01b0\u1edbc \u1ed0ng Gi\u00f3 Online<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#9_Nhung_Luu_Y_Khi_Thiet_Ke_Ong_Gio\" >9. Nh\u1eefng L\u01b0u \u00dd Khi Thi\u1ebft K\u1ebf \u1ed0ng Gi\u00f3<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#Han_che_co_cut\" >H\u1ea1n ch\u1ebf co c\u00fat<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#Kiem_soat_van_toc_gio\" >Ki\u1ec3m so\u00e1t v\u1eadn t\u1ed1c gi\u00f3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#Can_bang_he_thong\" >C\u00e2n b\u1eb1ng h\u1ec7 th\u1ed1ng<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#10_Cau_Hoi_Thuong_Gap\" >10. C\u00e2u H\u1ecfi Th\u01b0\u1eddng G\u1eb7p<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#Van_toc_gio_trong_ong_gio_nen_chon_bao_nhieu\" >V\u1eadn t\u1ed1c gi\u00f3 trong \u1ed1ng gi\u00f3 n\u00ean ch\u1ecdn bao nhi\u00eau?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#Phuong_phap_tinh_kich_thuoc_ong_gio_nao_pho_bien_nhat\" >Ph\u01b0\u01a1ng ph\u00e1p t\u00ednh k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 n\u00e0o ph\u1ed5 bi\u1ebfn nh\u1ea5t?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#Ong_gio_tron_hay_ong_gio_chu_nhat_tot_hon\" >\u1ed0ng gi\u00f3 tr\u00f2n hay \u1ed1ng gi\u00f3 ch\u1eef nh\u1eadt t\u1ed1t h\u01a1n?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#TOM_LAI\" >T\u00d3M L\u1ea0I:<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#Tool_tinh_toan_kich_thuoc_ong_gio\" >Tool t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/trieuminh.com\/en\/phuong-phap-tinh-kich-thuoc-ong-gio\/#Lien_He\" >Li\u00ean H\u1ec7<\/a><\/li><\/ul><\/nav><\/div>\n\n<ul data-start=\"836\" data-end=\"948\">\n<li data-section-id=\"1erhhbz\" data-start=\"836\" data-end=\"877\">\n<p data-start=\"838\" data-end=\"877\">T\u0103ng t\u1ed5n th\u1ea5t \u00e1p su\u1ea5t trong \u0111\u01b0\u1eddng \u1ed1ng<\/p>\n<\/li>\n<li data-section-id=\"8g8kjy\" data-start=\"878\" data-end=\"901\">\n<p data-start=\"880\" data-end=\"901\">T\u0103ng c\u00f4ng su\u1ea5t qu\u1ea1t<\/p>\n<\/li>\n<li data-section-id=\"1dhdoox\" data-start=\"902\" data-end=\"948\">\n<p data-start=\"904\" data-end=\"948\">Ph\u00e1t sinh ti\u1ebfng \u1ed3n l\u1edbn trong h\u1ec7 th\u1ed1ng HVAC<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"950\" data-end=\"1058\">Ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu <strong data-start=\"965\" data-end=\"993\">\u1ed1ng gi\u00f3 thi\u1ebft k\u1ebf qu\u00e1 l\u1edbn<\/strong>, chi ph\u00ed v\u1eadt t\u01b0, thi c\u00f4ng v\u00e0 kh\u00f4ng gian l\u1eafp \u0111\u1eb7t s\u1ebd t\u0103ng \u0111\u00e1ng k\u1ec3.<\/p>\n<p data-start=\"1060\" data-end=\"1357\">Do \u0111\u00f3, c\u00e1c k\u1ef9 s\u01b0 HVAC c\u1ea7n \u00e1p d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p <strong data-start=\"1110\" data-end=\"1162\">t\u00ednh k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 theo ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt<\/strong> \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb b\u1edfi c\u00e1c t\u1ed5 ch\u1ee9c uy t\u00edn nh\u01b0 <strong data-start=\"1207\" data-end=\"1248\"><span class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"><span class=\"whitespace-normal\">ASHRAE<\/span><\/span><\/strong>, <strong data-start=\"1250\" data-end=\"1291\"><span class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"><span class=\"whitespace-normal\">SMACNA<\/span><\/span><\/strong> v\u00e0 ti\u00eau chu\u1ea9n Vi\u1ec7t Nam <strong data-start=\"1315\" data-end=\"1356\"><span class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"><span class=\"whitespace-normal\">TCVN 5687:2010<\/span><\/span><\/strong>.<\/p>\n<p data-start=\"1359\" data-end=\"1563\">B\u00e0i vi\u1ebft n\u00e0y s\u1ebd tr\u00ecnh b\u00e0y chi ti\u1ebft <strong data-start=\"1394\" data-end=\"1447\">c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 HVAC<\/strong>, b\u1ea3ng ti\u00eau chu\u1ea9n v\u1eadn t\u1ed1c gi\u00f3 v\u00e0 c\u00e1c <strong data-start=\"1484\" data-end=\"1520\">c\u00f4ng c\u1ee5 t\u00ednh to\u00e1n \u1ed1ng gi\u00f3 online<\/strong> gi\u00fap k\u1ef9 s\u01b0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n<p data-start=\"1359\" data-end=\"1563\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-819\" src=\"https:\/\/trieuminh.com\/wp-content\/uploads\/2026\/03\/thi-cong-ong-gio.png\" alt=\"thi c\u00f4ng \u1ed1ng gi\u00f3\" width=\"937\" height=\"625\" srcset=\"https:\/\/trieuminh.com\/wp-content\/uploads\/2026\/03\/thi-cong-ong-gio.png 1536w, https:\/\/trieuminh.com\/wp-content\/uploads\/2026\/03\/thi-cong-ong-gio-768x512.png 768w\" sizes=\"auto, (max-width: 937px) 100vw, 937px\" \/><\/p>\n<hr data-start=\"1565\" data-end=\"1568\" \/>\n<h1 data-section-id=\"18frkla\" data-start=\"1570\" data-end=\"1609\"><span class=\"ez-toc-section\" id=\"1_Tong_Quan_Ve_He_Thong_Ong_Gio_HVAC\"><\/span>1. T\u1ed5ng Quan V\u1ec1 H\u1ec7 Th\u1ed1ng \u1ed0ng Gi\u00f3 HVAC<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"1611\" data-end=\"1776\">H\u1ec7 th\u1ed1ng \u1ed1ng gi\u00f3 l\u00e0 th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong h\u1ec7 th\u1ed1ng HVAC. H\u1ec7 th\u1ed1ng n\u00e0y c\u00f3 nhi\u1ec7m v\u1ee5 <strong data-start=\"1699\" data-end=\"1775\">v\u1eadn chuy\u1ec3n kh\u00f4ng kh\u00ed t\u1eeb thi\u1ebft b\u1ecb x\u1eed l\u00fd kh\u00f4ng kh\u00ed \u0111\u1ebfn c\u00e1c khu v\u1ef1c s\u1eed d\u1ee5ng<\/strong>.<\/p>\n<p data-start=\"1778\" data-end=\"1819\">M\u1ed9t h\u1ec7 th\u1ed1ng \u1ed1ng gi\u00f3 HVAC th\u01b0\u1eddng bao g\u1ed3m:<\/p>\n<ul data-start=\"1821\" data-end=\"1940\">\n<li data-section-id=\"12xfqa4\" data-start=\"1821\" data-end=\"1838\">\n<p data-start=\"1823\" data-end=\"1838\">\u1ed0ng gi\u00f3 ch\u00ednh<\/p>\n<\/li>\n<li data-section-id=\"q27yz1\" data-start=\"1839\" data-end=\"1856\">\n<p data-start=\"1841\" data-end=\"1856\">\u1ed0ng gi\u00f3 nh\u00e1nh<\/p>\n<\/li>\n<li data-section-id=\"1k499gf\" data-start=\"1857\" data-end=\"1882\">\n<p data-start=\"1859\" data-end=\"1882\">Co c\u00fat v\u00e0 t\u00ea chia gi\u00f3<\/p>\n<\/li>\n<li data-section-id=\"jguldw\" data-start=\"1883\" data-end=\"1905\">\n<p data-start=\"1885\" data-end=\"1905\">Van \u0111i\u1ec1u ch\u1ec9nh gi\u00f3<\/p>\n<\/li>\n<li data-section-id=\"1hsbja2\" data-start=\"1906\" data-end=\"1940\">\n<p data-start=\"1908\" data-end=\"1940\">Mi\u1ec7ng gi\u00f3 c\u1ea5p v\u00e0 mi\u1ec7ng gi\u00f3 h\u1ed3i<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1942\" data-end=\"2038\">Trong thi\u1ebft k\u1ebf HVAC, vi\u1ec7c <strong data-start=\"1968\" data-end=\"1995\">t\u00ednh k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3<\/strong> \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n d\u1ef1a tr\u00ean ba th\u00f4ng s\u1ed1 ch\u00ednh:<\/p>\n<ul data-start=\"2040\" data-end=\"2125\">\n<li data-section-id=\"ou6rmi\" data-start=\"2040\" data-end=\"2061\">\n<p data-start=\"2042\" data-end=\"2061\">L\u01b0u l\u01b0\u1ee3ng gi\u00f3 (Q)<\/p>\n<\/li>\n<li data-section-id=\"168fxux\" data-start=\"2062\" data-end=\"2091\">\n<p data-start=\"2064\" data-end=\"2091\">V\u1eadn t\u1ed1c gi\u00f3 trong \u1ed1ng (V)<\/p>\n<\/li>\n<li data-section-id=\"1uu6fxl\" data-start=\"2092\" data-end=\"2125\">\n<p data-start=\"2094\" data-end=\"2125\">Di\u1ec7n t\u00edch ti\u1ebft di\u1ec7n \u1ed1ng gi\u00f3 (A)<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2127\" data-end=\"2194\">Quan h\u1ec7 gi\u1eefa c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh theo c\u00f4ng th\u1ee9c c\u01a1 b\u1ea3n sau:<\/p>\n<p data-start=\"2196\" data-end=\"2211\">A = Q \/ V<\/p>\n<p data-start=\"2213\" data-end=\"2222\">Trong \u0111\u00f3:<\/p>\n<ul data-start=\"2224\" data-end=\"2342\">\n<li data-section-id=\"mr995m\" data-start=\"2224\" data-end=\"2269\">\n<p data-start=\"2226\" data-end=\"2269\"><strong data-start=\"2226\" data-end=\"2231\">A<\/strong> l\u00e0 di\u1ec7n t\u00edch ti\u1ebft di\u1ec7n \u1ed1ng gi\u00f3 (m\u00b2)<\/p>\n<\/li>\n<li data-section-id=\"9qteqc\" data-start=\"2270\" data-end=\"2303\">\n<p data-start=\"2272\" data-end=\"2303\"><strong data-start=\"2272\" data-end=\"2277\">Q<\/strong> l\u00e0 l\u01b0u l\u01b0\u1ee3ng gi\u00f3 (m\u00b3\/s)<\/p>\n<\/li>\n<li data-section-id=\"vc49ro\" data-start=\"2304\" data-end=\"2342\">\n<p data-start=\"2306\" data-end=\"2342\"><strong data-start=\"2306\" data-end=\"2311\">V<\/strong> l\u00e0 v\u1eadn t\u1ed1c gi\u00f3 trong \u1ed1ng (m\/s)<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2344\" data-end=\"2422\">C\u00f4ng th\u1ee9c n\u00e0y l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh <strong data-start=\"2379\" data-end=\"2421\">k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 trong thi\u1ebft k\u1ebf HVAC<\/strong>.<\/p>\n<figure id=\"attachment_817\" aria-describedby=\"caption-attachment-817\" style=\"width: 945px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-817\" title=\"PH\u01af\u01a0NG PH\u00c1P T\u00cdNH K\u00cdCH TH\u01af\u1edaC \u1ed0NG GI\u00d3\" src=\"https:\/\/trieuminh.com\/wp-content\/uploads\/2026\/03\/TINH-TOAN-ONG-GIO-1.png\" alt=\"PH\u01af\u01a0NG PH\u00c1P T\u00cdNH K\u00cdCH TH\u01af\u1edaC \u1ed0NG GI\u00d3\" width=\"945\" height=\"630\" srcset=\"https:\/\/trieuminh.com\/wp-content\/uploads\/2026\/03\/TINH-TOAN-ONG-GIO-1.png 1536w, https:\/\/trieuminh.com\/wp-content\/uploads\/2026\/03\/TINH-TOAN-ONG-GIO-1-768x512.png 768w\" sizes=\"auto, (max-width: 945px) 100vw, 945px\" \/><figcaption id=\"caption-attachment-817\" class=\"wp-caption-text\">PH\u01af\u01a0NG PH\u00c1P T\u00cdNH K\u00cdCH TH\u01af\u1edaC \u1ed0NG GI\u00d3<\/figcaption><\/figure>\n<hr data-start=\"2424\" data-end=\"2427\" \/>\n<h1 data-section-id=\"14hl0lq\" data-start=\"2429\" data-end=\"2465\"><span class=\"ez-toc-section\" id=\"2_Cac_Tieu_Chuan_Thiet_Ke_Ong_Gio\"><\/span>2. C\u00e1c Ti\u00eau Chu\u1ea9n Thi\u1ebft K\u1ebf \u1ed0ng Gi\u00f3<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"2467\" data-end=\"2595\">Vi\u1ec7c thi\u1ebft k\u1ebf v\u00e0 t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 c\u1ea7n tu\u00e2n theo c\u00e1c ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt nh\u1eb1m \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3 v\u1eadn h\u00e0nh c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<h2 data-section-id=\"1pxvvq5\" data-start=\"2597\" data-end=\"2623\"><span class=\"ez-toc-section\" id=\"21_Tieu_Chuan_Viet_Nam\"><\/span>2.1 Ti\u00eau Chu\u1ea9n Vi\u1ec7t Nam<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"2625\" data-end=\"2702\">M\u1ed9t s\u1ed1 ti\u00eau chu\u1ea9n ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong thi\u1ebft k\u1ebf HVAC t\u1ea1i Vi\u1ec7t Nam g\u1ed3m:<\/p>\n<ul data-start=\"2704\" data-end=\"2946\">\n<li data-section-id=\"1ioetf5\" data-start=\"2704\" data-end=\"2812\">\n<p data-start=\"2706\" data-end=\"2812\"><strong data-start=\"2706\" data-end=\"2747\"><span class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"><span class=\"whitespace-normal\">TCVN 5687:2010<\/span><\/span><\/strong> \u2013 Ti\u00eau chu\u1ea9n thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng th\u00f4ng gi\u00f3 v\u00e0 \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed<\/p>\n<\/li>\n<li data-section-id=\"1p6gkew\" data-start=\"2813\" data-end=\"2901\">\n<p data-start=\"2815\" data-end=\"2901\"><strong data-start=\"2815\" data-end=\"2856\"><span class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"><span class=\"whitespace-normal\">TCVN 13580:2023<\/span><\/span><\/strong> \u2013 Y\u00eau c\u1ea7u ch\u1ebf t\u1ea1o v\u00e0 l\u1eafp \u0111\u1eb7t \u0111\u01b0\u1eddng \u1ed1ng gi\u00f3<\/p>\n<\/li>\n<li data-section-id=\"1aqsl6v\" data-start=\"2902\" data-end=\"2946\">\n<p data-start=\"2904\" data-end=\"2946\">TCXD 232:1999 \u2013 L\u1eafp \u0111\u1eb7t h\u1ec7 th\u1ed1ng th\u00f4ng gi\u00f3<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2948\" data-end=\"2976\">C\u00e1c ti\u00eau chu\u1ea9n n\u00e0y quy \u0111\u1ecbnh:<\/p>\n<ul data-start=\"2978\" data-end=\"3072\">\n<li data-section-id=\"b2bbq7\" data-start=\"2978\" data-end=\"3014\">\n<p data-start=\"2980\" data-end=\"3014\">V\u1eadn t\u1ed1c gi\u00f3 t\u1ed1i \u0111a trong \u1ed1ng gi\u00f3<\/p>\n<\/li>\n<li data-section-id=\"1fj56o9\" data-start=\"3015\" data-end=\"3046\">\n<p data-start=\"3017\" data-end=\"3046\">\u0110\u1ed9 k\u00edn v\u00e0 \u0111\u1ed9 r\u00f2 r\u1ec9 cho ph\u00e9p<\/p>\n<\/li>\n<li data-section-id=\"klr3wh\" data-start=\"3047\" data-end=\"3072\">\n<p data-start=\"3049\" data-end=\"3072\">\u0110\u1ed9 d\u00e0y v\u1eadt li\u1ec7u \u1ed1ng gi\u00f3<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"3074\" data-end=\"3077\" \/>\n<h2 data-section-id=\"1e5k9gt\" data-start=\"3079\" data-end=\"3104\"><span class=\"ez-toc-section\" id=\"22_Tieu_Chuan_Quoc_Te\"><\/span>2.2 Ti\u00eau Chu\u1ea9n Qu\u1ed1c T\u1ebf<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"3106\" data-end=\"3178\">Ngo\u00e0i ti\u00eau chu\u1ea9n Vi\u1ec7t Nam, c\u00e1c k\u1ef9 s\u01b0 HVAC th\u01b0\u1eddng tham kh\u1ea3o t\u00e0i li\u1ec7u c\u1ee7a:<\/p>\n<ul data-start=\"3180\" data-end=\"3269\">\n<li data-section-id=\"1l7bjx1\" data-start=\"3180\" data-end=\"3225\">\n<p data-start=\"3182\" data-end=\"3225\"><strong data-start=\"3182\" data-end=\"3223\"><span class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"><span class=\"whitespace-normal\">ASHRAE<\/span><\/span><\/strong><\/p>\n<\/li>\n<li data-section-id=\"1v9jfxx\" data-start=\"3226\" data-end=\"3269\">\n<p data-start=\"3228\" data-end=\"3269\"><strong data-start=\"3228\" data-end=\"3269\"><span class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"><span class=\"whitespace-normal\">SMACNA<\/span><\/span><\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3271\" data-end=\"3299\">C\u00e1c ti\u00eau chu\u1ea9n n\u00e0y cung c\u1ea5p:<\/p>\n<ul data-start=\"3301\" data-end=\"3398\">\n<li data-section-id=\"idfszv\" data-start=\"3301\" data-end=\"3335\">\n<p data-start=\"3303\" data-end=\"3335\">B\u1ea3ng v\u1eadn t\u1ed1c gi\u00f3 trong \u1ed1ng gi\u00f3<\/p>\n<\/li>\n<li data-section-id=\"125dzbc\" data-start=\"3336\" data-end=\"3360\">\n<p data-start=\"3338\" data-end=\"3360\">B\u1ea3ng t\u1ed5n th\u1ea5t ma s\u00e1t<\/p>\n<\/li>\n<li data-section-id=\"1s9waea\" data-start=\"3361\" data-end=\"3398\">\n<p data-start=\"3363\" data-end=\"3398\">Ph\u01b0\u01a1ng ph\u00e1p t\u00ednh k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"3400\" data-end=\"3403\" \/>\n<h1 data-section-id=\"dn9fsu\" data-start=\"3405\" data-end=\"3456\"><span class=\"ez-toc-section\" id=\"3_Bang_Tieu_Chuan_Van_Toc_Gio_Trong_Ong_Gio_HVAC\"><\/span>3. B\u1ea3ng Ti\u00eau Chu\u1ea9n V\u1eadn T\u1ed1c Gi\u00f3 Trong \u1ed0ng Gi\u00f3 HVAC<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"3458\" data-end=\"3634\">L\u1ef1a ch\u1ecdn <strong data-start=\"3467\" data-end=\"3496\">v\u1eadn t\u1ed1c gi\u00f3 trong \u1ed1ng gi\u00f3<\/strong> l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng trong thi\u1ebft k\u1ebf HVAC. V\u1eadn t\u1ed1c gi\u00f3 ph\u1ea3i \u0111\u1ea3m b\u1ea3o c\u00e2n b\u1eb1ng gi\u1eefa k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3, t\u1ed5n th\u1ea5t \u00e1p su\u1ea5t v\u00e0 m\u1ee9c \u0111\u1ed9 ti\u1ebfng \u1ed3n.<\/p>\n<h2 data-section-id=\"cswhsl\" data-start=\"3636\" data-end=\"3672\"><span class=\"ez-toc-section\" id=\"31_Van_Toc_Gio_Trong_Ong_Gio_Cap\"><\/span>3.1 V\u1eadn T\u1ed1c Gi\u00f3 Trong \u1ed0ng Gi\u00f3 C\u1ea5p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"3674\" data-end=\"3817\">\n<thead data-start=\"3674\" data-end=\"3712\">\n<tr data-start=\"3674\" data-end=\"3712\">\n<th class=\"\" data-start=\"3674\" data-end=\"3689\" data-col-size=\"sm\">Lo\u1ea1i \u1ed1ng gi\u00f3<\/th>\n<th class=\"\" data-start=\"3689\" data-end=\"3712\" data-col-size=\"sm\">V\u1eadn t\u1ed1c khuy\u1ebfn ngh\u1ecb<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"3723\" data-end=\"3817\">\n<tr data-start=\"3723\" data-end=\"3753\">\n<td data-start=\"3723\" data-end=\"3739\" data-col-size=\"sm\">\u1ed0ng gi\u00f3 ch\u00ednh<\/td>\n<td data-col-size=\"sm\" data-start=\"3739\" data-end=\"3753\">6 \u2013 10 m\/s<\/td>\n<\/tr>\n<tr data-start=\"3754\" data-end=\"3783\">\n<td data-start=\"3754\" data-end=\"3770\" data-col-size=\"sm\">\u1ed0ng gi\u00f3 nh\u00e1nh<\/td>\n<td data-start=\"3770\" data-end=\"3783\" data-col-size=\"sm\">4 \u2013 6 m\/s<\/td>\n<\/tr>\n<tr data-start=\"3784\" data-end=\"3817\">\n<td data-start=\"3784\" data-end=\"3804\" data-col-size=\"sm\">\u1ed0ng g\u1ea7n mi\u1ec7ng gi\u00f3<\/td>\n<td data-col-size=\"sm\" data-start=\"3804\" data-end=\"3817\">2 \u2013 4 m\/s<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<hr data-start=\"3819\" data-end=\"3822\" \/>\n<h2 data-section-id=\"4b4ktr\" data-start=\"3824\" data-end=\"3856\"><span class=\"ez-toc-section\" id=\"32_Van_Toc_Gio_Trong_Ong_Hoi\"><\/span>3.2 V\u1eadn T\u1ed1c Gi\u00f3 Trong \u1ed0ng H\u1ed3i<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"3858\" data-end=\"3950\">\n<thead data-start=\"3858\" data-end=\"3880\">\n<tr data-start=\"3858\" data-end=\"3880\">\n<th class=\"\" data-start=\"3858\" data-end=\"3869\" data-col-size=\"sm\">Lo\u1ea1i \u1ed1ng<\/th>\n<th class=\"\" data-start=\"3869\" data-end=\"3880\" data-col-size=\"sm\">V\u1eadn t\u1ed1c<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"3891\" data-end=\"3950\">\n<tr data-start=\"3891\" data-end=\"3920\">\n<td data-start=\"3891\" data-end=\"3907\" data-col-size=\"sm\">\u1ed0ng h\u1ed3i ch\u00ednh<\/td>\n<td data-col-size=\"sm\" data-start=\"3907\" data-end=\"3920\">5 \u2013 7 m\/s<\/td>\n<\/tr>\n<tr data-start=\"3921\" data-end=\"3950\">\n<td data-start=\"3921\" data-end=\"3937\" data-col-size=\"sm\">\u1ed0ng h\u1ed3i nh\u00e1nh<\/td>\n<td data-start=\"3937\" data-end=\"3950\" data-col-size=\"sm\">3 \u2013 5 m\/s<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<hr data-start=\"3952\" data-end=\"3955\" \/>\n<h2 data-section-id=\"1j4pwzz\" data-start=\"3957\" data-end=\"4002\"><span class=\"ez-toc-section\" id=\"33_Van_Toc_Gio_Trong_He_Thong_Cong_Nghiep\"><\/span>3.3 V\u1eadn T\u1ed1c Gi\u00f3 Trong H\u1ec7 Th\u1ed1ng C\u00f4ng Nghi\u1ec7p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"4004\" data-end=\"4144\">\n<thead data-start=\"4004\" data-end=\"4026\">\n<tr data-start=\"4004\" data-end=\"4026\">\n<th class=\"\" data-start=\"4004\" data-end=\"4015\" data-col-size=\"sm\">\u1ee8ng d\u1ee5ng<\/th>\n<th class=\"\" data-start=\"4015\" data-end=\"4026\" data-col-size=\"sm\">V\u1eadn t\u1ed1c<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"4037\" data-end=\"4144\">\n<tr data-start=\"4037\" data-end=\"4073\">\n<td data-start=\"4037\" data-end=\"4059\" data-col-size=\"sm\">Th\u00f4ng gi\u00f3 nh\u00e0 x\u01b0\u1edfng<\/td>\n<td data-start=\"4059\" data-end=\"4073\" data-col-size=\"sm\">8 \u2013 12 m\/s<\/td>\n<\/tr>\n<tr data-start=\"4074\" data-end=\"4109\">\n<td data-start=\"4074\" data-end=\"4094\" data-col-size=\"sm\">H\u1ec7 th\u1ed1ng h\u00fat kh\u00f3i<\/td>\n<td data-col-size=\"sm\" data-start=\"4094\" data-end=\"4109\">10 \u2013 15 m\/s<\/td>\n<\/tr>\n<tr data-start=\"4110\" data-end=\"4144\">\n<td data-start=\"4110\" data-end=\"4129\" data-col-size=\"sm\">H\u1ec7 th\u1ed1ng h\u00fat b\u1ee5i<\/td>\n<td data-start=\"4129\" data-end=\"4144\" data-col-size=\"sm\">12 \u2013 20 m\/s<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<hr data-start=\"4146\" data-end=\"4149\" \/>\n<h2 data-section-id=\"mqvbue\" data-start=\"0\" data-end=\"70\"><span class=\"ez-toc-section\" id=\"4_Cac_Phuong_Phap_Tinh_Toan_Kich_Thuoc_Ong_Gio_Trong_He_Thong_HVAC\"><\/span>4. C\u00e1c Ph\u01b0\u01a1ng Ph\u00e1p T\u00ednh To\u00e1n K\u00edch Th\u01b0\u1edbc \u1ed0ng Gi\u00f3 Trong H\u1ec7 Th\u1ed1ng HVAC<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"72\" data-end=\"566\">Trong thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng HVAC, c\u00f4ng t\u00e1c t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 l\u00e0 m\u1ed9t trong nh\u1eefng h\u1ea1ng m\u1ee5c k\u1ef9 thu\u1eadt quan tr\u1ecdng nh\u1ea5t v\u00ec n\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn kh\u1ea3 n\u0103ng ph\u00e2n ph\u1ed1i l\u01b0u l\u01b0\u1ee3ng gi\u00f3, hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng c\u1ee7a qu\u1ea1t, \u0111\u1ed9 \u1ed3n trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh c\u0169ng nh\u01b0 t\u1ed5ng chi ph\u00ed \u0111\u1ea7u t\u01b0 c\u1ee7a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng c\u01a1 \u0111i\u1ec7n. M\u1ed9t h\u1ec7 th\u1ed1ng \u1ed1ng gi\u00f3 \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n \u0111\u00fang k\u1ef9 thu\u1eadt s\u1ebd gi\u00fap l\u01b0u l\u01b0\u1ee3ng gi\u00f3 ph\u00e2n b\u1ed5 \u0111\u1ed3ng \u0111\u1ec1u \u0111\u1ebfn t\u1eebng khu v\u1ef1c, h\u1ea1n ch\u1ebf t\u1ed5n th\u1ea5t \u00e1p su\u1ea5t v\u00e0 gi\u1ea3m \u0111i\u1ec7n n\u0103ng ti\u00eau th\u1ee5 trong su\u1ed1t qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh.<\/p>\n<p data-start=\"568\" data-end=\"899\">N\u1ebfu k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn qu\u00e1 nh\u1ecf, v\u1eadn t\u1ed1c gi\u00f3 trong \u0111\u01b0\u1eddng \u1ed1ng s\u1ebd t\u0103ng cao, d\u1eabn \u0111\u1ebfn ph\u00e1t sinh ti\u1ebfng \u1ed3n l\u1edbn, t\u0103ng rung \u0111\u1ed9ng v\u00e0 l\u00e0m qu\u1ea1t ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng v\u1edbi \u00e1p su\u1ea5t cao h\u01a1n. Ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu l\u1ef1a ch\u1ecdn k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 qu\u00e1 l\u1edbn s\u1ebd g\u00e2y l\u00e3ng ph\u00ed v\u1eadt t\u01b0, chi\u1ebfm nhi\u1ec1u kh\u00f4ng gian l\u1eafp \u0111\u1eb7t v\u00e0 l\u00e0m t\u0103ng chi ph\u00ed thi c\u00f4ng h\u1ec7 th\u1ed1ng HVAC.<\/p>\n<p data-start=\"901\" data-end=\"1193\">Hi\u1ec7n nay, trong l\u0129nh v\u1ef1c c\u01a1 \u0111i\u1ec7n l\u1ea1nh v\u00e0 \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed, c\u00f3 ba ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u1ec3 t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3. M\u1ed7i ph\u01b0\u01a1ng ph\u00e1p s\u1ebd c\u00f3 nguy\u00ean l\u00fd t\u00ednh to\u00e1n, \u01b0u \u0111i\u1ec3m k\u1ef9 thu\u1eadt v\u00e0 ph\u1ea1m vi \u1ee9ng d\u1ee5ng kh\u00e1c nhau t\u00f9y theo quy m\u00f4 c\u00f4ng tr\u00ecnh c\u0169ng nh\u01b0 y\u00eau c\u1ea7u v\u1eadn h\u00e0nh th\u1ef1c t\u1ebf.<\/p>\n<hr data-start=\"1195\" data-end=\"1198\" \/>\n<h3 data-section-id=\"jhjmqs\" data-start=\"1200\" data-end=\"1265\"><span class=\"ez-toc-section\" id=\"41_Phuong_Phap_Giam_Dan_Van_Toc_Velocity_Reduction_Method\"><\/span>4.1. Ph\u01b0\u01a1ng Ph\u00e1p Gi\u1ea3m D\u1ea7n V\u1eadn T\u1ed1c (Velocity Reduction Method)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"1267\" data-end=\"1749\">Ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3m d\u1ea7n v\u1eadn t\u1ed1c l\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 d\u1ef1a tr\u00ean nguy\u00ean t\u1eafc v\u1eadn t\u1ed1c gi\u00f3 s\u1ebd gi\u1ea3m d\u1ea7n theo t\u1eebng \u0111o\u1ea1n khi h\u1ec7 th\u1ed1ng b\u1eaft \u0111\u1ea7u ph\u00e2n nh\u00e1nh ra nhi\u1ec1u khu v\u1ef1c kh\u00e1c nhau. \u1ede c\u00e1c \u0111o\u1ea1n \u1ed1ng ch\u00ednh g\u1ea7n qu\u1ea1t c\u1ea5p gi\u00f3, v\u1eadn t\u1ed1c th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn l\u1edbn h\u01a1n nh\u1eb1m gi\u1ea3m k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 v\u00e0 ti\u1ebft ki\u1ec7m di\u1ec7n t\u00edch l\u1eafp \u0111\u1eb7t. Khi l\u01b0u l\u01b0\u1ee3ng gi\u00f3 gi\u1ea3m d\u1ea7n v\u1ec1 cu\u1ed1i tuy\u1ebfn ho\u1eb7c t\u1ea1i c\u00e1c nh\u00e1nh ph\u1ee5, v\u1eadn t\u1ed1c gi\u00f3 s\u1ebd \u0111\u01b0\u1ee3c gi\u1ea3m xu\u1ed1ng \u0111\u1ec3 h\u1ea1n ch\u1ebf ti\u1ebfng \u1ed3n v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<p data-start=\"1751\" data-end=\"1839\">Trong th\u1ef1c t\u1ebf thi\u1ebft k\u1ebf HVAC, v\u1eadn t\u1ed1c gi\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn theo t\u1eebng khu v\u1ef1c nh\u01b0 sau:<\/p>\n<ul data-start=\"1841\" data-end=\"2434\">\n<li data-section-id=\"1eisuz4\" data-start=\"1841\" data-end=\"2022\">\u0110\u1ed1i v\u1edbi tuy\u1ebfn \u1ed1ng gi\u00f3 ch\u00ednh c\u00f3 l\u01b0u l\u01b0\u1ee3ng l\u1edbn, v\u1eadn t\u1ed1c th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ecdn trong kho\u1ea3ng t\u1eeb 8 \u2013 12 m\/s nh\u1eb1m t\u1ed1i \u01b0u k\u00edch th\u01b0\u1edbc \u1ed1ng v\u00e0 gi\u1ea3m kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt t\u01b0 s\u1eed d\u1ee5ng cho to\u00e0n h\u1ec7 th\u1ed1ng.<\/li>\n<li data-section-id=\"sswsh\" data-start=\"2023\" data-end=\"2220\">\u0110\u1ed1i v\u1edbi c\u00e1c tuy\u1ebfn \u1ed1ng nh\u00e1nh c\u1ea5p gi\u00f3 \u0111\u1ebfn t\u1eebng khu v\u1ef1c s\u1eed d\u1ee5ng, v\u1eadn t\u1ed1c th\u01b0\u1eddng \u0111\u01b0\u1ee3c gi\u1ea3m xu\u1ed1ng kho\u1ea3ng t\u1eeb 5 \u2013 8 m\/s \u0111\u1ec3 h\u1ea1n ch\u1ebf t\u1ed5n th\u1ea5t \u00e1p su\u1ea5t v\u00e0 gi\u1ea3m ti\u1ebfng \u1ed3n ph\u00e1t sinh trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh.<\/li>\n<li data-section-id=\"1hwzquc\" data-start=\"2221\" data-end=\"2434\">\u0110\u1ed1i v\u1edbi mi\u1ec7ng gi\u00f3 c\u1ea5p ho\u1eb7c mi\u1ec7ng gi\u00f3 h\u1ed3i trong kh\u00f4ng gian \u0111i\u1ec1u h\u00f2a, v\u1eadn t\u1ed1c gi\u00f3 th\u01b0\u1eddng ch\u1ec9 dao \u0111\u1ed9ng t\u1eeb 2 \u2013 4 m\/s nh\u1eb1m \u0111\u1ea3m b\u1ea3o s\u1ef1 tho\u1ea3i m\u00e1i cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng v\u00e0 tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng gi\u00f3 th\u1ed5i tr\u1ef1c ti\u1ebfp g\u00e2y kh\u00f3 ch\u1ecbu.<\/li>\n<\/ul>\n<p data-start=\"2436\" data-end=\"2793\">\u01afu \u0111i\u1ec3m l\u1edbn nh\u1ea5t c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3m d\u1ea7n v\u1eadn t\u1ed1c l\u00e0 c\u00e1ch t\u00ednh to\u00e1n t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u01a1n gi\u1ea3n, d\u1ec5 tri\u1ec3n khai v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c c\u00f4ng tr\u00ecnh c\u00f3 quy m\u00f4 nh\u1ecf ho\u1eb7c h\u1ec7 th\u1ed1ng kh\u00f4ng qu\u00e1 ph\u1ee9c t\u1ea1p. Ng\u01b0\u1eddi thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 nhanh ch\u00f3ng l\u1ef1a ch\u1ecdn k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 d\u1ef1a tr\u00ean kinh nghi\u1ec7m k\u1ebft h\u1ee3p v\u1edbi b\u1ea3ng tra v\u1eadn t\u1ed1c ti\u00eau chu\u1ea9n m\u00e0 kh\u00f4ng c\u1ea7n th\u1ef1c hi\u1ec7n qu\u00e1 nhi\u1ec1u ph\u00e9p t\u00ednh chuy\u00ean s\u00e2u.<\/p>\n<p data-start=\"2795\" data-end=\"3025\">Ngo\u00e0i ra, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f2n gi\u00fap gi\u1ea3m k\u00edch th\u01b0\u1edbc tuy\u1ebfn \u1ed1ng ch\u00ednh, ti\u1ebft ki\u1ec7m kh\u00f4ng gian k\u1ef9 thu\u1eadt ph\u00eda tr\u00ean tr\u1ea7n v\u00e0 h\u1ed7 tr\u1ee3 qu\u00e1 tr\u00ecnh thi c\u00f4ng l\u1eafp \u0111\u1eb7t thu\u1eadn ti\u1ec7n h\u01a1n \u0111\u1ed1i v\u1edbi c\u00e1c c\u00f4ng tr\u00ecnh d\u00e2n d\u1ee5ng ho\u1eb7c v\u0103n ph\u00f2ng quy m\u00f4 v\u1eeba v\u00e0 nh\u1ecf.<\/p>\n<p data-start=\"3027\" data-end=\"3398\">Tuy nhi\u00ean, nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p Velocity Reduction l\u00e0 kh\u1ea3 n\u0103ng c\u00e2n b\u1eb1ng gi\u00f3 gi\u1eefa c\u00e1c nh\u00e1nh th\u01b0\u1eddng kh\u00f4ng cao. N\u1ebfu t\u00ednh to\u00e1n kh\u00f4ng h\u1ee3p l\u00fd, h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 x\u1ea3y ra t\u00ecnh tr\u1ea1ng khu v\u1ef1c g\u1ea7n qu\u1ea1t nh\u1eadn qu\u00e1 nhi\u1ec1u gi\u00f3 trong khi c\u00e1c khu v\u1ef1c cu\u1ed1i tuy\u1ebfn b\u1ecb thi\u1ebfu l\u01b0u l\u01b0\u1ee3ng. \u0110i\u1ec1u n\u00e0y l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 l\u00e0m m\u00e1t, kh\u1ea3 n\u0103ng th\u00f4ng gi\u00f3 v\u00e0 s\u1ef1 \u1ed5n \u0111\u1ecbnh khi v\u1eadn h\u00e0nh h\u1ec7 th\u1ed1ng HVAC.<\/p>\n<p data-start=\"3400\" data-end=\"3449\">Do \u0111\u00f3, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong:<\/p>\n<ul data-start=\"3451\" data-end=\"3819\">\n<li data-section-id=\"548q25\" data-start=\"3451\" data-end=\"3560\">H\u1ec7 th\u1ed1ng th\u00f4ng gi\u00f3 \u0111\u01a1n gi\u1ea3n c\u00f3 chi\u1ec1u d\u00e0i tuy\u1ebfn \u1ed1ng kh\u00f4ng qu\u00e1 l\u1edbn v\u00e0 s\u1ed1 l\u01b0\u1ee3ng nh\u00e1nh ph\u00e2n ph\u1ed1i \u00edt ph\u1ee9c t\u1ea1p.<\/li>\n<li data-section-id=\"dx7n26\" data-start=\"3561\" data-end=\"3695\">C\u00e1c c\u00f4ng tr\u00ecnh nh\u00e0 \u1edf d\u00e2n d\u1ee5ng, v\u0103n ph\u00f2ng nh\u1ecf ho\u1eb7c c\u1eeda h\u00e0ng th\u01b0\u01a1ng m\u1ea1i c\u00f3 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt kh\u00f4ng qu\u00e1 cao v\u1ec1 c\u00e2n b\u1eb1ng l\u01b0u l\u01b0\u1ee3ng gi\u00f3.<\/li>\n<li data-section-id=\"susxyo\" data-start=\"3696\" data-end=\"3819\">C\u00e1c h\u1ec7 th\u1ed1ng h\u00fat kh\u00ed ho\u1eb7c c\u1ea5p gi\u00f3 c\u1ee5c b\u1ed9 c\u1ea7n t\u1ed1i \u01b0u chi ph\u00ed thi\u1ebft k\u1ebf v\u00e0 r\u00fat ng\u1eafn th\u1eddi gian tri\u1ec3n khai thi c\u00f4ng th\u1ef1c t\u1ebf.<\/li>\n<\/ul>\n<hr data-start=\"3821\" data-end=\"3824\" \/>\n<h3 data-section-id=\"dayzfh\" data-start=\"3826\" data-end=\"3886\"><span class=\"ez-toc-section\" id=\"42_Phuong_Phap_Ma_Sat_Dong_Deu_Equal_Friction_Method\"><\/span>4.2. Ph\u01b0\u01a1ng Ph\u00e1p Ma S\u00e1t \u0110\u1ed3ng \u0110\u1ec1u (Equal Friction Method)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"3888\" data-end=\"4230\">Ph\u01b0\u01a1ng ph\u00e1p ma s\u00e1t \u0111\u1ed3ng \u0111\u1ec1u l\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay trong thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng HVAC nh\u1edd kh\u1ea3 n\u0103ng c\u00e2n b\u1eb1ng gi\u1eefa hi\u1ec7u qu\u1ea3 k\u1ef9 thu\u1eadt, t\u00ednh \u1ed5n \u0111\u1ecbnh khi v\u1eadn h\u00e0nh v\u00e0 chi ph\u00ed \u0111\u1ea7u t\u01b0 h\u1ee3p l\u00fd. Nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y l\u00e0 gi\u1eef cho t\u1ed5n th\u1ea5t ma s\u00e1t tr\u00ean m\u1ed7i m\u00e9t chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng \u1ed1ng lu\u00f4n b\u1eb1ng nhau trong to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng.<\/p>\n<p data-start=\"4232\" data-end=\"4305\">V\u00ed d\u1ee5, k\u1ef9 s\u01b0 thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn m\u1ee9c t\u1ed5n th\u1ea5t ma s\u00e1t ti\u00eau chu\u1ea9n nh\u01b0:<\/p>\n<ul data-start=\"4307\" data-end=\"4677\">\n<li data-section-id=\"mc8go4\" data-start=\"4307\" data-end=\"4428\">0.6 Pa\/m \u0111\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng y\u00eau c\u1ea7u \u0111\u1ed9 \u1ed3n th\u1ea5p v\u00e0 v\u1eadn h\u00e0nh \u00eam \u00e1i trong c\u00e1c c\u00f4ng tr\u00ecnh kh\u00e1ch s\u1ea1n ho\u1eb7c v\u0103n ph\u00f2ng cao c\u1ea5p.<\/li>\n<li data-section-id=\"1jzi8yl\" data-start=\"4429\" data-end=\"4553\">0.8 Pa\/m \u0111\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u00f2a th\u00f4ng th\u01b0\u1eddng trong trung t\u00e2m th\u01b0\u01a1ng m\u1ea1i, nh\u00e0 x\u01b0\u1edfng ho\u1eb7c t\u00f2a nh\u00e0 v\u0103n ph\u00f2ng quy m\u00f4 v\u1eeba.<\/li>\n<li data-section-id=\"1ceenko\" data-start=\"4554\" data-end=\"4677\">1.0 Pa\/m ho\u1eb7c cao h\u01a1n \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng c\u00f4ng nghi\u1ec7p c\u00f3 y\u00eau c\u1ea7u l\u01b0u l\u01b0\u1ee3ng gi\u00f3 l\u1edbn v\u00e0 c\u1ea7n t\u1ed1i \u01b0u k\u00edch th\u01b0\u1edbc \u0111\u01b0\u1eddng \u1ed1ng.<\/li>\n<\/ul>\n<p data-start=\"4679\" data-end=\"4864\">Sau khi x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb t\u1ed5n th\u1ea5t ma s\u00e1t ti\u00eau chu\u1ea9n, k\u1ef9 s\u01b0 s\u1ebd s\u1eed d\u1ee5ng bi\u1ec3u \u0111\u1ed3 t\u00ednh to\u00e1n \u1ed1ng gi\u00f3 ho\u1eb7c ph\u1ea7n m\u1ec1m HVAC chuy\u00ean d\u1ee5ng \u0111\u1ec3 l\u1ef1a ch\u1ecdn k\u00edch th\u01b0\u1edbc \u1ed1ng ph\u00f9 h\u1ee3p v\u1edbi t\u1eebng m\u1ee9c l\u01b0u l\u01b0\u1ee3ng.<\/p>\n<p data-start=\"4866\" data-end=\"5229\">\u01afu \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p Equal Friction l\u00e0 h\u1ec7 th\u1ed1ng c\u00f3 kh\u1ea3 n\u0103ng c\u00e2n b\u1eb1ng l\u01b0u l\u01b0\u1ee3ng gi\u00f3 kh\u00e1 t\u1ed1t, \u00e1p su\u1ea5t ph\u00e2n b\u1ed1 t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh h\u1ec7 th\u1ed1ng sau khi l\u1eafp \u0111\u1eb7t c\u0169ng thu\u1eadn l\u1ee3i h\u01a1n. Nh\u1edd t\u1ed5n th\u1ea5t ma s\u00e1t \u0111\u01b0\u1ee3c duy tr\u00ec \u1ed5n \u0111\u1ecbnh tr\u00ean to\u00e0n tuy\u1ebfn, qu\u1ea1t c\u1ea5p gi\u00f3 c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 h\u01a1n v\u00e0 gi\u1ea3m ti\u00eau hao \u0111i\u1ec7n n\u0103ng trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh l\u00e2u d\u00e0i.<\/p>\n<p data-start=\"5231\" data-end=\"5296\">Ngo\u00e0i ra, ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f2n mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch th\u1ef1c t\u1ebf nh\u01b0:<\/p>\n<ul data-start=\"5298\" data-end=\"5800\">\n<li data-section-id=\"2ufh8f\" data-start=\"5298\" data-end=\"5430\">Gi\u00fap t\u1ed1i \u01b0u k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 nh\u1eb1m gi\u1ea3m chi ph\u00ed v\u1eadt t\u01b0 nh\u01b0ng v\u1eabn \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng c\u1ea5p gi\u00f3 theo y\u00eau c\u1ea7u thi\u1ebft k\u1ebf c\u1ee7a c\u00f4ng tr\u00ecnh.<\/li>\n<li data-section-id=\"1h6mg1n\" data-start=\"5431\" data-end=\"5539\">H\u1ea1n ch\u1ebf ph\u00e1t sinh ti\u1ebfng \u1ed3n v\u00e0 rung \u0111\u1ed9ng do v\u1eadn t\u1ed1c gi\u00f3 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t h\u1ee3p l\u00fd tr\u00ean to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng HVAC.<\/li>\n<li data-section-id=\"1fvee2p\" data-start=\"5540\" data-end=\"5660\">H\u1ed7 tr\u1ee3 qu\u00e1 tr\u00ecnh c\u00e2n ch\u1ec9nh l\u01b0u l\u01b0\u1ee3ng gi\u00f3 t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng d\u1ec5 d\u00e0ng h\u01a1n sau khi h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o v\u1eadn h\u00e0nh th\u1ef1c t\u1ebf.<\/li>\n<li data-section-id=\"edr9dw\" data-start=\"5661\" data-end=\"5800\">Ph\u00f9 h\u1ee3p v\u1edbi h\u1ea7u h\u1ebft c\u00e1c lo\u1ea1i c\u00f4ng tr\u00ecnh d\u00e2n d\u1ee5ng v\u00e0 c\u00f4ng nghi\u1ec7p nh\u1edd t\u00ednh linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i trong th\u1ef1c t\u1ebf thi c\u00f4ng.<\/li>\n<\/ul>\n<p data-start=\"5802\" data-end=\"5892\">Ch\u00ednh v\u00ec nh\u1eefng \u01b0u \u0111i\u1ec3m tr\u00ean, ph\u01b0\u01a1ng ph\u00e1p ma s\u00e1t \u0111\u1ed3ng \u0111\u1ec1u hi\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn trong:<\/p>\n<ul data-start=\"5894\" data-end=\"6235\">\n<li data-section-id=\"1bcvbwu\" data-start=\"5894\" data-end=\"6002\">H\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed trung t\u00e2m cho t\u00f2a nh\u00e0 v\u0103n ph\u00f2ng, trung t\u00e2m th\u01b0\u01a1ng m\u1ea1i v\u00e0 kh\u00e1ch s\u1ea1n cao t\u1ea7ng.<\/li>\n<li data-section-id=\"1tjy7hf\" data-start=\"6003\" data-end=\"6122\">H\u1ec7 th\u1ed1ng th\u00f4ng gi\u00f3 nh\u00e0 x\u01b0\u1edfng s\u1ea3n xu\u1ea5t c\u00f3 nhi\u1ec1u khu v\u1ef1c ph\u00e2n ph\u1ed1i gi\u00f3 kh\u00e1c nhau v\u00e0 y\u00eau c\u1ea7u v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh l\u00e2u d\u00e0i.<\/li>\n<li data-section-id=\"1086qps\" data-start=\"6123\" data-end=\"6235\">H\u1ec7 th\u1ed1ng c\u1ea5p gi\u00f3 t\u01b0\u01a1i, h\u00fat kh\u00f3i ho\u1eb7c th\u00f4ng gi\u00f3 t\u1ea7ng h\u1ea7m c\u1ea7n \u0111\u1ea3m b\u1ea3o \u00e1p su\u1ea5t v\u00e0 l\u01b0u l\u01b0\u1ee3ng ph\u00e2n ph\u1ed1i \u0111\u1ed3ng \u0111\u1ec1u.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-894\" src=\"https:\/\/trieuminh.com\/wp-content\/uploads\/2026\/03\/ong-gio-vuong.jpg\" alt=\"\u1ed1ng gi\u00f3 vu\u00f4ng\" width=\"662\" height=\"600\" \/><\/p>\n<hr data-start=\"6237\" data-end=\"6240\" \/>\n<h3 data-section-id=\"1xuej6x\" data-start=\"6242\" data-end=\"6307\"><span class=\"ez-toc-section\" id=\"43_Phuong_Phap_Phuc_Hoi_Ap_Suat_Tinh_Static_Regain_Method\"><\/span>4.3. Ph\u01b0\u01a1ng Ph\u00e1p Ph\u1ee5c H\u1ed3i \u00c1p Su\u1ea5t T\u0129nh (Static Regain Method)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"6309\" data-end=\"6644\">Ph\u01b0\u01a1ng ph\u00e1p ph\u1ee5c h\u1ed3i \u00e1p su\u1ea5t t\u0129nh l\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n chuy\u00ean s\u00e2u th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho c\u00e1c h\u1ec7 th\u1ed1ng HVAC quy m\u00f4 l\u1edbn c\u00f3 l\u01b0u l\u01b0\u1ee3ng gi\u00f3 cao, chi\u1ec1u d\u00e0i tuy\u1ebfn \u1ed1ng l\u1edbn v\u00e0 nhi\u1ec1u nh\u00e1nh ph\u00e2n ph\u1ed1i ph\u1ee9c t\u1ea1p. \u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao v\u00e0 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 t\u1ed1i \u01b0u v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u00f2a trung t\u00e2m hi\u1ec7n \u0111\u1ea1i.<\/p>\n<p data-start=\"6646\" data-end=\"6942\">Nguy\u00ean l\u00fd c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y d\u1ef1a tr\u00ean hi\u1ec7n t\u01b0\u1ee3ng khi v\u1eadn t\u1ed1c gi\u00f3 gi\u1ea3m th\u00ec m\u1ed9t ph\u1ea7n \u00e1p su\u1ea5t \u0111\u1ed9ng s\u1ebd \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh \u00e1p su\u1ea5t t\u0129nh. Ng\u01b0\u1eddi thi\u1ebft k\u1ebf s\u1ebd t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 theo t\u1eebng \u0111o\u1ea1n sao cho ph\u1ea7n \u00e1p su\u1ea5t t\u0129nh \u0111\u01b0\u1ee3c ph\u1ee5c h\u1ed3i c\u00f3 th\u1ec3 b\u00f9 l\u1ea1i t\u1ed5n th\u1ea5t \u00e1p su\u1ea5t tr\u00ean \u0111\u01b0\u1eddng \u1ed1ng v\u00e0 ph\u1ee5 ki\u1ec7n.<\/p>\n<p data-start=\"6944\" data-end=\"7225\">Nh\u1edd c\u01a1 ch\u1ebf ph\u1ee5c h\u1ed3i \u00e1p su\u1ea5t n\u00e0y, l\u01b0u l\u01b0\u1ee3ng gi\u00f3 gi\u1eefa c\u00e1c nh\u00e1nh s\u1ebd \u0111\u01b0\u1ee3c ph\u00e2n ph\u1ed1i \u0111\u1ed3ng \u0111\u1ec1u h\u01a1n m\u00e0 kh\u00f4ng c\u1ea7n s\u1eed d\u1ee5ng qu\u00e1 nhi\u1ec1u thi\u1ebft b\u1ecb c\u00e2n b\u1eb1ng gi\u00f3. \u0110i\u1ec1u n\u00e0y gi\u00fap h\u1ec7 th\u1ed1ng v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh, gi\u1ea3m c\u00f4ng su\u1ea5t ti\u00eau th\u1ee5 c\u1ee7a qu\u1ea1t v\u00e0 n\u00e2ng cao hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng trong th\u1eddi gian d\u00e0i.<\/p>\n<p data-start=\"7227\" data-end=\"7314\">So v\u1edbi hai ph\u01b0\u01a1ng ph\u00e1p c\u00f2n l\u1ea1i, ph\u01b0\u01a1ng ph\u00e1p Static Regain c\u00f3 nhi\u1ec1u \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt nh\u01b0:<\/p>\n<ul data-start=\"7316\" data-end=\"7859\">\n<li data-section-id=\"cmdg8h\" data-start=\"7316\" data-end=\"7462\">Gi\u00fap ph\u00e2n ph\u1ed1i l\u01b0u l\u01b0\u1ee3ng gi\u00f3 \u0111\u1ed3ng \u0111\u1ec1u h\u01a1n t\u1ea1i c\u00e1c nh\u00e1nh xa qu\u1ea1t, \u0111\u1eb7c bi\u1ec7t trong h\u1ec7 th\u1ed1ng c\u00f3 tuy\u1ebfn \u1ed1ng d\u00e0i v\u00e0 nhi\u1ec1u v\u1ecb tr\u00ed chia nh\u00e1nh ph\u1ee9c t\u1ea1p.<\/li>\n<li data-section-id=\"o4cpsb\" data-start=\"7463\" data-end=\"7620\">Gi\u1ea3m \u0111\u00e1ng k\u1ec3 hi\u1ec7n t\u01b0\u1ee3ng ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t gi\u1eefa c\u00e1c khu v\u1ef1c s\u1eed d\u1ee5ng, t\u1eeb \u0111\u00f3 n\u00e2ng cao hi\u1ec7u qu\u1ea3 \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng th\u00f4ng gi\u00f3 trong c\u00f4ng tr\u00ecnh.<\/li>\n<li data-section-id=\"fd3hbi\" data-start=\"7621\" data-end=\"7749\">H\u1ed7 tr\u1ee3 t\u1ed1i \u01b0u c\u00f4ng su\u1ea5t qu\u1ea1t c\u1ea5p gi\u00f3, gi\u1ea3m \u0111i\u1ec7n n\u0103ng ti\u00eau th\u1ee5 v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed v\u1eadn h\u00e0nh trong c\u00e1c c\u00f4ng tr\u00ecnh quy m\u00f4 l\u1edbn.<\/li>\n<li data-section-id=\"17n3stu\" data-start=\"7750\" data-end=\"7859\">H\u1ea1n ch\u1ebf vi\u1ec7c ph\u1ea3i s\u1eed d\u1ee5ng qu\u00e1 nhi\u1ec1u van c\u00e2n b\u1eb1ng gi\u00f3 ho\u1eb7c damper \u0111i\u1ec1u ch\u1ec9nh l\u01b0u l\u01b0\u1ee3ng tr\u00ean to\u00e0n h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n<p data-start=\"7861\" data-end=\"8066\">Tuy nhi\u00ean, nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y l\u00e0 qu\u00e1 tr\u00ecnh t\u00ednh to\u00e1n kh\u00e1 ph\u1ee9c t\u1ea1p, \u0111\u00f2i h\u1ecfi k\u1ef9 s\u01b0 thi\u1ebft k\u1ebf ph\u1ea3i c\u00f3 kinh nghi\u1ec7m chuy\u00ean s\u00e2u v\u1ec1 HVAC c\u0169ng nh\u01b0 s\u1eed d\u1ee5ng th\u00e0nh th\u1ea1o c\u00e1c ph\u1ea7n m\u1ec1m t\u00ednh to\u00e1n chuy\u00ean ng\u00e0nh.<\/p>\n<p data-start=\"8068\" data-end=\"8128\">Ph\u01b0\u01a1ng ph\u00e1p ph\u1ee5c h\u1ed3i \u00e1p su\u1ea5t t\u0129nh th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong:<\/p>\n<ul data-start=\"8130\" data-end=\"8489\">\n<li data-section-id=\"yndze0\" data-start=\"8130\" data-end=\"8233\">H\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed trung t\u00e2m cho s\u00e2n bay, trung t\u00e2m th\u01b0\u01a1ng m\u1ea1i v\u00e0 b\u1ec7nh vi\u1ec7n c\u00f3 quy m\u00f4 l\u1edbn.<\/li>\n<li data-section-id=\"4lfu6h\" data-start=\"8234\" data-end=\"8358\">H\u1ec7 th\u1ed1ng HVAC trong nh\u00e0 m\u00e1y c\u00f4ng nghi\u1ec7p, nh\u00e0 m\u00e1y \u0111i\u1ec7n t\u1eed ho\u1eb7c khu s\u1ea3n xu\u1ea5t c\u00f3 y\u00eau c\u1ea7u ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng gi\u00f3 ch\u00ednh x\u00e1c.<\/li>\n<li data-section-id=\"tfjmey\" data-start=\"8359\" data-end=\"8489\">C\u00e1c c\u00f4ng tr\u00ecnh c\u00f3 tuy\u1ebfn \u1ed1ng gi\u00f3 d\u00e0i, nhi\u1ec1u t\u1ea7ng ho\u1eb7c nhi\u1ec1u khu v\u1ef1c s\u1eed d\u1ee5ng c\u1ea7n \u0111\u1ea3m b\u1ea3o \u00e1p su\u1ea5t \u1ed5n \u0111\u1ecbnh trong to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n<hr data-start=\"8491\" data-end=\"8494\" \/>\n<h2 data-section-id=\"nhd01i\" data-start=\"8496\" data-end=\"8548\"><span class=\"ez-toc-section\" id=\"5_Bang_Do_Day_Ton_Ong_Gio_Theo_Tieu_Chuan_SMACNA\"><\/span>5. B\u1ea3ng \u0110\u1ed9 D\u00e0y T\u00f4n \u1ed0ng Gi\u00f3 Theo Ti\u00eau Chu\u1ea9n SMACNA<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"8550\" data-end=\"8842\">Theo ti\u00eau chu\u1ea9n <span class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"><span class=\"whitespace-normal\">SMACNA<\/span><\/span>, \u0111\u1ed9 d\u00e0y v\u1eadt li\u1ec7u ch\u1ebf t\u1ea1o \u1ed1ng gi\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p v\u1edbi k\u00edch th\u01b0\u1edbc, \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c v\u00e0 \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh th\u1ef1c t\u1ebf c\u1ee7a h\u1ec7 th\u1ed1ng HVAC nh\u1eb1m \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 c\u1ee9ng c\u01a1 h\u1ecdc, h\u1ea1n ch\u1ebf rung l\u1eafc v\u00e0 duy tr\u00ec \u0111\u1ed9 k\u00edn gi\u00f3 trong su\u1ed1t qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng.<\/p>\n<p data-start=\"8844\" data-end=\"9174\">N\u1ebfu l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u qu\u00e1 m\u1ecfng \u0111\u1ed1i v\u1edbi c\u00e1c tuy\u1ebfn \u1ed1ng l\u1edbn ho\u1eb7c h\u1ec7 th\u1ed1ng \u00e1p su\u1ea5t cao, \u1ed1ng gi\u00f3 c\u00f3 th\u1ec3 x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng rung m\u1ea1nh, bi\u1ebfn d\u1ea1ng ho\u1eb7c x\u00ec h\u1edf gi\u00f3 t\u1ea1i c\u00e1c v\u1ecb tr\u00ed gh\u00e9p n\u1ed1i. Ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu s\u1eed d\u1ee5ng t\u00f4n qu\u00e1 d\u00e0y s\u1ebd l\u00e0m t\u0103ng tr\u1ecdng l\u01b0\u1ee3ng h\u1ec7 th\u1ed1ng, g\u00e2y kh\u00f3 kh\u0103n trong thi c\u00f4ng v\u00e0 ph\u00e1t sinh th\u00eam nhi\u1ec1u chi ph\u00ed v\u1eadt t\u01b0 kh\u00f4ng c\u1ea7n thi\u1ebft.<\/p>\n<p data-start=\"9176\" data-end=\"9233\">B\u1ea3ng \u0111\u1ed9 d\u00e0y t\u00f4n \u1ed1ng gi\u00f3 tham kh\u1ea3o theo ti\u00eau chu\u1ea9n SMACNA:<\/p>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"9235\" data-end=\"9389\">\n<thead data-start=\"9235\" data-end=\"9281\">\n<tr data-start=\"9235\" data-end=\"9281\">\n<th class=\"last:pe-10\" data-start=\"9235\" data-end=\"9256\" data-col-size=\"sm\">K\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3<\/th>\n<th class=\"last:pe-10\" data-start=\"9256\" data-end=\"9281\" data-col-size=\"sm\">\u0110\u1ed9 d\u00e0y t\u00f4n ti\u00eau chu\u1ea9n<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"9292\" data-end=\"9389\">\n<tr data-start=\"9292\" data-end=\"9313\">\n<td data-start=\"9292\" data-end=\"9303\" data-col-size=\"sm\">\u2264 300 mm<\/td>\n<td data-col-size=\"sm\" data-start=\"9303\" data-end=\"9313\">0.5 mm<\/td>\n<\/tr>\n<tr data-start=\"9314\" data-end=\"9339\">\n<td data-start=\"9314\" data-end=\"9329\" data-col-size=\"sm\">300 \u2013 750 mm<\/td>\n<td data-col-size=\"sm\" data-start=\"9329\" data-end=\"9339\">0.6 mm<\/td>\n<\/tr>\n<tr data-start=\"9340\" data-end=\"9366\">\n<td data-start=\"9340\" data-end=\"9356\" data-col-size=\"sm\">750 \u2013 1500 mm<\/td>\n<td data-col-size=\"sm\" data-start=\"9356\" data-end=\"9366\">0.8 mm<\/td>\n<\/tr>\n<tr data-start=\"9367\" data-end=\"9389\">\n<td data-start=\"9367\" data-end=\"9379\" data-col-size=\"sm\">&gt; 1500 mm<\/td>\n<td data-start=\"9379\" data-end=\"9389\" data-col-size=\"sm\">1.0 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p data-start=\"9391\" data-end=\"9523\">Ngo\u00e0i k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3, trong qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf v\u00e0 thi c\u00f4ng th\u1ef1c t\u1ebf, k\u1ef9 s\u01b0 c\u00f2n c\u1ea7n xem x\u00e9t th\u00eam nhi\u1ec1u y\u1ebfu t\u1ed1 quan tr\u1ecdng kh\u00e1c nh\u01b0:<\/p>\n<ul data-start=\"9525\" data-end=\"10145\">\n<li data-section-id=\"19etml6\" data-start=\"9525\" data-end=\"9642\">\u00c1p su\u1ea5t v\u1eadn h\u00e0nh c\u1ee7a h\u1ec7 th\u1ed1ng HVAC nh\u1eb1m l\u1ef1a ch\u1ecdn \u0111\u1ed9 d\u00e0y v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p v\u1edbi kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c v\u00e0 \u0111\u1ed9 k\u00edn y\u00eau c\u1ea7u.<\/li>\n<li data-section-id=\"1cnryxk\" data-start=\"9643\" data-end=\"9784\">Kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c gi\u00e1 treo v\u00e0 h\u1ec7 th\u1ed1ng gia c\u01b0\u1eddng nh\u1eb1m \u0111\u1ea3m b\u1ea3o tuy\u1ebfn \u1ed1ng kh\u00f4ng b\u1ecb v\u00f5ng ho\u1eb7c bi\u1ebfn d\u1ea1ng trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh l\u00e2u d\u00e0i.<\/li>\n<li data-section-id=\"t7s29\" data-start=\"9785\" data-end=\"9912\">\u0110i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng l\u1eafp \u0111\u1eb7t nh\u01b0 \u0111\u1ed9 \u1ea9m cao, khu v\u1ef1c ngo\u00e0i tr\u1eddi ho\u1eb7c m\u00f4i tr\u01b0\u1eddng c\u00f3 t\u00ednh \u0103n m\u00f2n \u0111\u1ec3 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ph\u00f9 h\u1ee3p.<\/li>\n<li data-section-id=\"t4t4qr\" data-start=\"9913\" data-end=\"10020\">Y\u00eau c\u1ea7u ch\u1ed1ng ch\u00e1y, ch\u1ed1ng kh\u00f3i v\u00e0 ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt c\u1ee7a t\u1eebng lo\u1ea1i c\u00f4ng tr\u00ecnh theo quy \u0111\u1ecbnh hi\u1ec7n h\u00e0nh.<\/li>\n<li data-section-id=\"dq10jm\" data-start=\"10021\" data-end=\"10145\">M\u1ee9c \u0111\u1ed9 rung \u0111\u1ed9ng v\u00e0 ti\u1ebfng \u1ed3n cho ph\u00e9p trong c\u00e1c c\u00f4ng tr\u00ecnh \u0111\u1eb7c th\u00f9 nh\u01b0 b\u1ec7nh vi\u1ec7n, kh\u00e1ch s\u1ea1n ho\u1eb7c ph\u00f2ng s\u1ea1ch c\u00f4ng nghi\u1ec7p.<\/li>\n<\/ul>\n<hr data-start=\"10147\" data-end=\"10150\" \/>\n<h2 data-section-id=\"opwzw6\" data-start=\"10152\" data-end=\"10197\"><span class=\"ez-toc-section\" id=\"6_Ton_That_Ap_Suat_Trong_He_Thong_Ong_Gio\"><\/span>6. T\u1ed5n Th\u1ea5t \u00c1p Su\u1ea5t Trong H\u1ec7 Th\u1ed1ng \u1ed0ng Gi\u00f3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"10199\" data-end=\"10445\">T\u1ed5n th\u1ea5t \u00e1p su\u1ea5t l\u00e0 m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t c\u1ea7n \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n ch\u00ednh x\u00e1c trong thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng HVAC v\u00ec n\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a qu\u1ea1t c\u1ea5p gi\u00f3 c\u0169ng nh\u01b0 hi\u1ec7u qu\u1ea3 v\u1eadn h\u00e0nh to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed.<\/p>\n<p data-start=\"10447\" data-end=\"10675\">N\u1ebfu t\u1ed5ng t\u1ed5n th\u1ea5t \u00e1p su\u1ea5t qu\u00e1 l\u1edbn, qu\u1ea1t s\u1ebd ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng v\u1edbi c\u00f4ng su\u1ea5t cao h\u01a1n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ee7 l\u01b0u l\u01b0\u1ee3ng gi\u00f3 y\u00eau c\u1ea7u. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 l\u00e0m t\u0103ng \u0111i\u1ec7n n\u0103ng ti\u00eau th\u1ee5 m\u00e0 c\u00f2n khi\u1ebfn thi\u1ebft b\u1ecb nhanh xu\u1ed1ng c\u1ea5p v\u00e0 gi\u1ea3m tu\u1ed5i th\u1ecd v\u1eadn h\u00e0nh.<\/p>\n<p data-start=\"10677\" data-end=\"10753\">T\u1ed5n th\u1ea5t \u00e1p su\u1ea5t trong h\u1ec7 th\u1ed1ng \u1ed1ng gi\u00f3 th\u01b0\u1eddng bao g\u1ed3m hai th\u00e0nh ph\u1ea7n ch\u00ednh:<\/p>\n<h3 data-section-id=\"1ch6zfq\" data-start=\"10755\" data-end=\"10794\"><span class=\"ez-toc-section\" id=\"61_Ton_That_Ma_Sat_Tren_Duong_Ong\"><\/span>6.1. T\u1ed5n Th\u1ea5t Ma S\u00e1t Tr\u00ean \u0110\u01b0\u1eddng \u1ed0ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"10796\" data-end=\"11056\">\u0110\u00e2y l\u00e0 t\u1ed5n th\u1ea5t sinh ra do ma s\u00e1t gi\u1eefa d\u00f2ng kh\u00f4ng kh\u00ed v\u00e0 b\u1ec1 m\u1eb7t b\u00ean trong c\u1ee7a \u1ed1ng gi\u00f3 trong su\u1ed1t qu\u00e1 tr\u00ecnh l\u01b0u th\u00f4ng. Gi\u00e1 tr\u1ecb t\u1ed5n th\u1ea5t n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1 nh\u01b0 chi\u1ec1u d\u00e0i tuy\u1ebfn \u1ed1ng, \u0111\u1ed9 nh\u00e1m v\u1eadt li\u1ec7u, k\u00edch th\u01b0\u1edbc ti\u1ebft di\u1ec7n v\u00e0 v\u1eadn t\u1ed1c gi\u00f3 trong h\u1ec7 th\u1ed1ng.<\/p>\n<p data-start=\"11058\" data-end=\"11174\">Khi v\u1eadn t\u1ed1c gi\u00f3 t\u0103ng cao, t\u1ed5n th\u1ea5t ma s\u00e1t s\u1ebd t\u0103ng nhanh v\u00e0 k\u00e9o theo \u00e1p su\u1ea5t l\u00e0m vi\u1ec7c c\u1ee7a qu\u1ea1t c\u0169ng t\u0103ng l\u00ean \u0111\u00e1ng k\u1ec3.<\/p>\n<h3 data-section-id=\"1pypws3\" data-start=\"11176\" data-end=\"11206\"><span class=\"ez-toc-section\" id=\"62_Ton_That_Qua_Phu_Kien\"><\/span>6.2. T\u1ed5n Th\u1ea5t Qua Ph\u1ee5 Ki\u1ec7n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"11208\" data-end=\"11408\">Ngo\u00e0i t\u1ed5n th\u1ea5t tr\u00ean \u0111\u01b0\u1eddng \u1ed1ng th\u1eb3ng, h\u1ec7 th\u1ed1ng HVAC c\u00f2n ph\u00e1t sinh t\u1ed5n th\u1ea5t t\u1ea1i c\u00e1c v\u1ecb tr\u00ed ph\u1ee5 ki\u1ec7n nh\u01b0 co gi\u00f3, t\u00ea chia nh\u00e1nh, van \u0111i\u1ec1u ch\u1ec9nh l\u01b0u l\u01b0\u1ee3ng, c\u00f4n thu, c\u00f4n gi\u1ea3m, mi\u1ec7ng gi\u00f3 v\u00e0 b\u1ed9 l\u1ecdc kh\u00f4ng kh\u00ed.<\/p>\n<p data-start=\"11410\" data-end=\"11584\">C\u00e1c ph\u1ee5 ki\u1ec7n c\u00f3 g\u00f3c chuy\u1ec3n h\u01b0\u1edbng l\u1edbn ho\u1eb7c thi\u1ebft k\u1ebf kh\u00f4ng h\u1ee3p l\u00fd s\u1ebd l\u00e0m d\u00f2ng kh\u00ed b\u1ecb r\u1ed1i, g\u00e2y t\u0103ng t\u1ed5n th\u1ea5t \u00e1p su\u1ea5t v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 ph\u00e2n ph\u1ed1i gi\u00f3 trong to\u00e0n h\u1ec7 th\u1ed1ng.<\/p>\n<p data-start=\"11586\" data-end=\"11625\">C\u00f4ng th\u1ee9c t\u00ednh t\u1ed5n th\u1ea5t \u00e1p su\u1ea5t ma s\u00e1t:<\/p>\n<p data-start=\"11627\" data-end=\"11664\"><span class=\"inline-block align-middle\"><span class=\"katex\"><span class=\"katex-mathml\">\u0394P=f\u00d7L\/D\u00d7(\u03c1V^2)\/2<\/span><span class=\"katex-html\" aria-hidden=\"true\"><span class=\"base\"><span class=\"mord\"><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist-s\">\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p data-start=\"11666\" data-end=\"11675\">Trong \u0111\u00f3:<\/p>\n<ul data-start=\"11677\" data-end=\"12142\">\n<li data-section-id=\"mnyi8j\" data-start=\"11677\" data-end=\"11749\">\u0394P l\u00e0 t\u1ed5n th\u1ea5t \u00e1p su\u1ea5t tr\u00ean \u0111\u01b0\u1eddng \u1ed1ng, \u0111\u01a1n v\u1ecb t\u00ednh b\u1eb1ng Pascal (Pa).<\/li>\n<li data-section-id=\"y2xkp8\" data-start=\"11750\" data-end=\"11846\">f l\u00e0 h\u1ec7 s\u1ed1 ma s\u00e1t ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 nh\u00e1m v\u1eadt li\u1ec7u v\u00e0 ch\u1ebf \u0111\u1ed9 d\u00f2ng ch\u1ea3y trong h\u1ec7 th\u1ed1ng \u1ed1ng gi\u00f3.<\/li>\n<li data-section-id=\"eezsdw\" data-start=\"11847\" data-end=\"11923\">L l\u00e0 chi\u1ec1u d\u00e0i th\u1ef1c t\u1ebf c\u1ee7a tuy\u1ebfn \u1ed1ng gi\u00f3 c\u1ea7n t\u00ednh to\u00e1n t\u1ed5n th\u1ea5t \u00e1p su\u1ea5t.<\/li>\n<li data-section-id=\"1pupbye\" data-start=\"11924\" data-end=\"12014\">D l\u00e0 \u0111\u01b0\u1eddng k\u00ednh t\u01b0\u01a1ng \u0111\u01b0\u01a1ng c\u1ee7a \u1ed1ng gi\u00f3 ho\u1eb7c k\u00edch th\u01b0\u1edbc th\u1ee7y l\u1ef1c \u0111\u1ed1i v\u1edbi \u1ed1ng ch\u1eef nh\u1eadt.<\/li>\n<li data-section-id=\"leia30\" data-start=\"12015\" data-end=\"12091\">\u03c1 l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang c\u1ee7a kh\u00f4ng kh\u00ed trong \u0111i\u1ec1u ki\u1ec7n ti\u00eau chu\u1ea9n v\u1eadn h\u00e0nh.<\/li>\n<li data-section-id=\"shwdqg\" data-start=\"12092\" data-end=\"12142\">V l\u00e0 v\u1eadn t\u1ed1c d\u00f2ng kh\u00ed b\u00ean trong \u0111\u01b0\u1eddng \u1ed1ng gi\u00f3.<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-893\" src=\"https:\/\/trieuminh.com\/wp-content\/uploads\/2026\/03\/ong-gio-tron.png\" alt=\"\" width=\"1536\" height=\"1024\" srcset=\"https:\/\/trieuminh.com\/wp-content\/uploads\/2026\/03\/ong-gio-tron.png 1536w, https:\/\/trieuminh.com\/wp-content\/uploads\/2026\/03\/ong-gio-tron-768x512.png 768w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" \/><\/li>\n<\/ul>\n<hr data-start=\"12144\" data-end=\"12147\" \/>\n<h2 data-section-id=\"yyyi84\" data-start=\"12149\" data-end=\"12184\"><span class=\"ez-toc-section\" id=\"7_Vi_Du_Tinh_Kich_Thuoc_Ong_Gio\"><\/span>7. V\u00ed D\u1ee5 T\u00ednh K\u00edch Th\u01b0\u1edbc \u1ed0ng Gi\u00f3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"12186\" data-end=\"12283\">Gi\u1ea3 s\u1eed c\u1ea7n thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng c\u1ea5p gi\u00f3 cho m\u1ed9t khu v\u1ef1c \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed v\u1edbi c\u00e1c th\u00f4ng s\u1ed1 nh\u01b0 sau:<\/p>\n<ul data-start=\"12285\" data-end=\"12530\">\n<li data-section-id=\"13ork8c\" data-start=\"12285\" data-end=\"12396\">L\u01b0u l\u01b0\u1ee3ng gi\u00f3 y\u00eau c\u1ea7u c\u1ee7a h\u1ec7 th\u1ed1ng l\u00e0 4000 m\u00b3\/h nh\u1eb1m \u0111\u1ea3m b\u1ea3o \u0111\u1ee7 l\u01b0\u1ee3ng kh\u00f4ng kh\u00ed c\u1ea5p cho kh\u00f4ng gian s\u1eed d\u1ee5ng.<\/li>\n<li data-section-id=\"ia4but\" data-start=\"12397\" data-end=\"12530\">V\u1eadn t\u1ed1c gi\u00f3 thi\u1ebft k\u1ebf trong tuy\u1ebfn \u1ed1ng ch\u00ednh \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn l\u00e0 8 m\/s \u0111\u1ec3 c\u00e2n b\u1eb1ng gi\u1eefa k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 v\u00e0 m\u1ee9c \u0111\u1ed9 t\u1ed5n th\u1ea5t \u00e1p su\u1ea5t.<\/li>\n<\/ul>\n<h3 data-section-id=\"pl5v30\" data-start=\"12532\" data-end=\"12571\"><span class=\"ez-toc-section\" id=\"Buoc_1_Chuyen_Doi_Don_Vi_Luu_Luong\"><\/span>B\u01b0\u1edbc 1: Chuy\u1ec3n \u0110\u1ed5i \u0110\u01a1n V\u1ecb L\u01b0u L\u01b0\u1ee3ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"12573\" data-end=\"12623\">Chuy\u1ec3n \u0111\u1ed5i l\u01b0u l\u01b0\u1ee3ng gi\u00f3 t\u1eeb \u0111\u01a1n v\u1ecb m\u00b3\/h sang m\u00b3\/s:\u00a0<span class=\"inline-block align-middle\"><span class=\"katex\"><span class=\"katex-mathml\">Q=40003600=1.11 m3\/sQ<\/span><\/span><\/span><\/p>\n<h3 data-section-id=\"1j86j3v\" data-start=\"12664\" data-end=\"12708\"><span class=\"ez-toc-section\" id=\"Buoc_2_Tinh_Dien_Tich_Tiet_Dien_Ong_Gio\"><\/span>B\u01b0\u1edbc 2: T\u00ednh Di\u1ec7n T\u00edch Ti\u1ebft Di\u1ec7n \u1ed0ng Gi\u00f3<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"12710\" data-end=\"12753\">\u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch ti\u1ebft di\u1ec7n:<\/p>\n<p data-start=\"12755\" data-end=\"12792\"><span class=\"inline-block align-middle\"><span class=\"katex\"><span class=\"katex-mathml\">A=QV=1.118=0.139 m2A\u00a0<\/span><\/span><\/span><\/p>\n<p data-start=\"12794\" data-end=\"12803\">Trong \u0111\u00f3:<\/p>\n<ul data-start=\"12805\" data-end=\"13036\">\n<li data-section-id=\"1lzyezq\" data-start=\"12805\" data-end=\"12888\">A l\u00e0 di\u1ec7n t\u00edch ti\u1ebft di\u1ec7n c\u1ea7n thi\u1ebft c\u1ee7a \u1ed1ng gi\u00f3 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ee7 l\u01b0u l\u01b0\u1ee3ng y\u00eau c\u1ea7u.<\/li>\n<li data-section-id=\"n5gfnx\" data-start=\"12889\" data-end=\"12970\">Q l\u00e0 l\u01b0u l\u01b0\u1ee3ng gi\u00f3 thi\u1ebft k\u1ebf c\u1ee7a h\u1ec7 th\u1ed1ng sau khi chuy\u1ec3n \u0111\u1ed5i sang \u0111\u01a1n v\u1ecb m\u00b3\/s.<\/li>\n<li data-section-id=\"1vgjcik\" data-start=\"12971\" data-end=\"13036\">V l\u00e0 v\u1eadn t\u1ed1c gi\u00f3 \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn theo ti\u00eau chu\u1ea9n thi\u1ebft k\u1ebf HVAC.<\/li>\n<\/ul>\n<h3 data-section-id=\"qz5ckp\" data-start=\"13038\" data-end=\"13085\"><span class=\"ez-toc-section\" id=\"Buoc_3_Lua_Chon_Kich_Thuoc_Ong_Gio_Thuc_Te\"><\/span>B\u01b0\u1edbc 3: L\u1ef1a Ch\u1ecdn K\u00edch Th\u01b0\u1edbc \u1ed0ng Gi\u00f3 Th\u1ef1c T\u1ebf<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"13087\" data-end=\"13218\">Sau khi t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c di\u1ec7n t\u00edch ti\u1ebft di\u1ec7n y\u00eau c\u1ea7u kho\u1ea3ng 0.139 m\u00b2, k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn m\u1ed9t s\u1ed1 k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 ti\u00eau chu\u1ea9n nh\u01b0:<\/p>\n<ul data-start=\"13220\" data-end=\"13499\">\n<li data-section-id=\"3zjkn6\" data-start=\"13220\" data-end=\"13360\">\u1ed0ng gi\u00f3 ch\u1eef nh\u1eadt k\u00edch th\u01b0\u1edbc 500 \u00d7 300 mm gi\u00fap thu\u1eadn ti\u1ec7n thi c\u00f4ng trong kh\u00f4ng gian tr\u1ea7n k\u1ef9 thu\u1eadt th\u1ea5p ho\u1eb7c khu v\u1ef1c c\u00f3 chi\u1ec1u cao h\u1ea1n ch\u1ebf.<\/li>\n<li data-section-id=\"eugi6a\" data-start=\"13361\" data-end=\"13499\">\u1ed0ng gi\u00f3 tr\u00f2n \u0111\u01b0\u1eddng k\u00ednh \u00d8420 mm gi\u00fap gi\u1ea3m t\u1ed5n th\u1ea5t \u00e1p su\u1ea5t v\u00e0 h\u1ea1n ch\u1ebf ti\u1ebfng \u1ed3n t\u1ed1t h\u01a1n so v\u1edbi \u1ed1ng gi\u00f3 ch\u1eef nh\u1eadt trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p.<\/li>\n<\/ul>\n<p data-start=\"13501\" data-end=\"13735\" data-is-last-node=\"\" data-is-only-node=\"\">Trong th\u1ef1c t\u1ebf, vi\u1ec7c l\u1ef1a ch\u1ecdn k\u00edch th\u01b0\u1edbc cu\u1ed1i c\u00f9ng c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1c nh\u01b0 kh\u00f4ng gian l\u1eafp \u0111\u1eb7t, chi\u1ec1u cao tr\u1ea7n k\u1ef9 thu\u1eadt, m\u1ee9c \u0111\u1ed9 ti\u1ebfng \u1ed3n cho ph\u00e9p, chi ph\u00ed v\u1eadt t\u01b0, kh\u1ea3 n\u0103ng gia c\u00f4ng v\u00e0 y\u00eau c\u1ea7u th\u1ea9m m\u1ef9 c\u1ee7a c\u00f4ng tr\u00ecnh HVAC.<\/p>\n<ul data-start=\"5931\" data-end=\"5966\">\n<li data-section-id=\"1pjymw5\" data-start=\"5948\" data-end=\"5966\">\n<p data-start=\"5950\" data-end=\"5966\">\n<\/li>\n<\/ul>\n<hr data-start=\"5968\" data-end=\"5971\" \/>\n<h1 data-section-id=\"1h0q8k1\" data-start=\"5973\" data-end=\"6018\"><span class=\"ez-toc-section\" id=\"8_Tool_Tinh_Toan_Kich_Thuoc_Ong_Gio_Online\"><\/span>8. Tool T\u00ednh To\u00e1n K\u00edch Th\u01b0\u1edbc \u1ed0ng Gi\u00f3 Online<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"6256\" data-end=\"6306\"><a href=\"https:\/\/trieuminh.com\/wp-content\/uploads\/2026\/03\/Tool-tinh-toan-kich-thuoc-ong-gio.html\">Tool t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3<\/a><\/p>\n<p data-start=\"6308\" data-end=\"6329\">C\u00e1c c\u00f4ng c\u1ee5 n\u00e0y gi\u00fap:<\/p>\n<p data-start=\"6333\" data-end=\"6358\">T\u00ednh k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3<\/p>\n<hr data-start=\"6405\" data-end=\"6408\" \/>\n<h1 data-section-id=\"10frxwh\" data-start=\"6410\" data-end=\"6447\"><span class=\"ez-toc-section\" id=\"9_Nhung_Luu_Y_Khi_Thiet_Ke_Ong_Gio\"><\/span>9. Nh\u1eefng L\u01b0u \u00dd Khi Thi\u1ebft K\u1ebf \u1ed0ng Gi\u00f3<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"6449\" data-end=\"6511\">\u0110\u1ec3 h\u1ec7 th\u1ed1ng HVAC ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3, c\u1ea7n ch\u00fa \u00fd c\u00e1c y\u1ebfu t\u1ed1 sau.<\/p>\n<h3 data-section-id=\"r1fyms\" data-start=\"6513\" data-end=\"6531\"><span class=\"ez-toc-section\" id=\"Han_che_co_cut\"><\/span>H\u1ea1n ch\u1ebf co c\u00fat<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"6533\" data-end=\"6566\">Co 90\u00b0 l\u00e0m t\u0103ng t\u1ed5n th\u1ea5t \u00e1p su\u1ea5t.<\/p>\n<h3 data-section-id=\"b11e25\" data-start=\"6568\" data-end=\"6593\"><span class=\"ez-toc-section\" id=\"Kiem_soat_van_toc_gio\"><\/span>Ki\u1ec3m so\u00e1t v\u1eadn t\u1ed1c gi\u00f3<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"6595\" data-end=\"6628\">V\u1eadn t\u1ed1c qu\u00e1 cao g\u00e2y ti\u1ebfng \u1ed3n l\u1edbn.<\/p>\n<h3 data-section-id=\"acjs7s\" data-start=\"6630\" data-end=\"6651\"><span class=\"ez-toc-section\" id=\"Can_bang_he_thong\"><\/span>C\u00e2n b\u1eb1ng h\u1ec7 th\u1ed1ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"6653\" data-end=\"6702\">S\u1eed d\u1ee5ng van \u0111i\u1ec1u ch\u1ec9nh gi\u00f3 \u0111\u1ec3 c\u00e2n b\u1eb1ng l\u01b0u l\u01b0\u1ee3ng.<\/p>\n<p data-start=\"6653\" data-end=\"6702\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-818\" src=\"https:\/\/trieuminh.com\/wp-content\/uploads\/2026\/03\/z3959022640315_83517ae260bb010f2ce305a257780b8b.jpg\" alt=\"\" width=\"917\" height=\"687\" srcset=\"https:\/\/trieuminh.com\/wp-content\/uploads\/2026\/03\/z3959022640315_83517ae260bb010f2ce305a257780b8b.jpg 1276w, https:\/\/trieuminh.com\/wp-content\/uploads\/2026\/03\/z3959022640315_83517ae260bb010f2ce305a257780b8b-768x575.jpg 768w\" sizes=\"auto, (max-width: 917px) 100vw, 917px\" \/><\/p>\n<hr data-start=\"6704\" data-end=\"6707\" \/>\n<h1 data-section-id=\"14p4xp8\" data-start=\"6709\" data-end=\"6739\"><span class=\"ez-toc-section\" id=\"10_Cau_Hoi_Thuong_Gap\"><\/span>10. C\u00e2u H\u1ecfi Th\u01b0\u1eddng G\u1eb7p<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<h2 data-section-id=\"nwsydr\" data-start=\"6741\" data-end=\"6789\"><span class=\"ez-toc-section\" id=\"Van_toc_gio_trong_ong_gio_nen_chon_bao_nhieu\"><\/span>V\u1eadn t\u1ed1c gi\u00f3 trong \u1ed1ng gi\u00f3 n\u00ean ch\u1ecdn bao nhi\u00eau?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"6791\" data-end=\"6804\">Th\u00f4ng th\u01b0\u1eddng:<\/p>\n<ul data-start=\"6806\" data-end=\"6854\">\n<li data-section-id=\"12yktku\" data-start=\"6806\" data-end=\"6831\">\n<p data-start=\"6808\" data-end=\"6831\">\u1ed0ng ch\u00ednh: 6 \u2013 10 m\/s<\/p>\n<\/li>\n<li data-section-id=\"1xp8bii\" data-start=\"6832\" data-end=\"6854\">\n<p data-start=\"6834\" data-end=\"6854\">\u1ed0ng nh\u00e1nh: 4 \u2013 6 m\/s<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"6856\" data-end=\"6859\" \/>\n<h2 data-section-id=\"qw0s5t\" data-start=\"6861\" data-end=\"6918\"><span class=\"ez-toc-section\" id=\"Phuong_phap_tinh_kich_thuoc_ong_gio_nao_pho_bien_nhat\"><\/span>Ph\u01b0\u01a1ng ph\u00e1p t\u00ednh k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 n\u00e0o ph\u1ed5 bi\u1ebfn nh\u1ea5t?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"6920\" data-end=\"7000\">Ph\u01b0\u01a1ng ph\u00e1p <strong data-start=\"6932\" data-end=\"6950\">Equal Friction<\/strong> l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn nh\u1ea5t trong thi\u1ebft k\u1ebf HVAC.<\/p>\n<hr data-start=\"7002\" data-end=\"7005\" \/>\n<h2 data-section-id=\"1fbzjb0\" data-start=\"7007\" data-end=\"7052\"><span class=\"ez-toc-section\" id=\"Ong_gio_tron_hay_ong_gio_chu_nhat_tot_hon\"><\/span>\u1ed0ng gi\u00f3 tr\u00f2n hay \u1ed1ng gi\u00f3 ch\u1eef nh\u1eadt t\u1ed1t h\u01a1n?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"7054\" data-end=\"7078\">\u1ed0ng gi\u00f3 tr\u00f2n c\u00f3 \u01b0u \u0111i\u1ec3m:<\/p>\n<ul data-start=\"7080\" data-end=\"7139\">\n<li data-section-id=\"1ppaqyh\" data-start=\"7080\" data-end=\"7102\">\n<p data-start=\"7082\" data-end=\"7102\">\u00cdt t\u1ed5n th\u1ea5t ma s\u00e1t<\/p>\n<\/li>\n<li data-section-id=\"1rektrb\" data-start=\"7103\" data-end=\"7118\">\n<p data-start=\"7105\" data-end=\"7118\">\u00cdt ti\u1ebfng \u1ed3n<\/p>\n<\/li>\n<li data-section-id=\"10jwtn2\" data-start=\"7119\" data-end=\"7139\">\n<p data-start=\"7121\" data-end=\"7139\">Ti\u1ebft ki\u1ec7m v\u1eadt li\u1ec7u<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"7141\" data-end=\"7144\" \/>\n<h1 data-section-id=\"1ioo5z0\" data-start=\"7146\" data-end=\"7156\"><span class=\"ez-toc-section\" id=\"TOM_LAI\"><\/span>T\u00d3M L\u1ea0I:<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p data-start=\"7158\" data-end=\"7301\"><strong data-start=\"7158\" data-end=\"7195\">T\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 HVAC<\/strong> l\u00e0 b\u01b0\u1edbc quan tr\u1ecdng gi\u00fap h\u1ec7 th\u1ed1ng v\u1eadn h\u00e0nh hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn g\u1ed3m:<\/p>\n<ul data-start=\"7303\" data-end=\"7360\">\n<li data-section-id=\"1sjdxpi\" data-start=\"7303\" data-end=\"7325\">\n<p data-start=\"7305\" data-end=\"7325\">Velocity Reduction<\/p>\n<\/li>\n<li data-section-id=\"1f434py\" data-start=\"7326\" data-end=\"7344\">\n<p data-start=\"7328\" data-end=\"7344\">Equal Friction<\/p>\n<\/li>\n<li data-section-id=\"4zdyp2\" data-start=\"7345\" data-end=\"7360\">\n<p data-start=\"7347\" data-end=\"7360\">Static Regain<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"7362\" data-end=\"7479\">Trong th\u1ef1c t\u1ebf, <strong data-start=\"7377\" data-end=\"7434\">ph\u01b0\u01a1ng ph\u00e1p Equal Friction \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t<\/strong> v\u00ec d\u1ec5 thi\u1ebft k\u1ebf v\u00e0 \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng c\u00e2n b\u1eb1ng.<\/p>\n<p data-start=\"7481\" data-end=\"7647\">K\u1ebft h\u1ee3p <strong data-start=\"7489\" data-end=\"7578\">b\u1ea3ng ti\u00eau chu\u1ea9n v\u1eadn t\u1ed1c gi\u00f3, ti\u00eau chu\u1ea9n thi\u1ebft k\u1ebf HVAC v\u00e0 c\u00e1c c\u00f4ng c\u1ee5 t\u00ednh to\u00e1n online<\/strong> s\u1ebd gi\u00fap k\u1ef9 s\u01b0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng \u1ed1ng gi\u00f3 ch\u00ednh x\u00e1c v\u00e0 t\u1ed1i \u01b0u chi ph\u00ed.<\/p>\n<p data-start=\"7481\" data-end=\"7647\"><strong>B\u1ea4M V\u00c0O \u0110\u00c2Y \u0110\u1ec2 T\u00cdNH TO\u00c1N K\u00cdCH TH\u01af\u1edaC \u1ed0NG GI\u00d3 ONLINE HO\u1eb6C T\u1ea2I V\u1ec0<\/strong><\/p>\n<h3 data-start=\"6256\" data-end=\"6306\"><span class=\"ez-toc-section\" id=\"Tool_tinh_toan_kich_thuoc_ong_gio\"><\/span><a href=\"https:\/\/trieuminh.com\/wp-content\/uploads\/2026\/03\/Tool-tinh-toan-kich-thuoc-ong-gio.html\">Tool t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3<\/a><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>T\u1ea2I B\u1ea2NG T\u00cdNH TH\u00d4NG GI\u00d3<\/strong><\/p>\n<div style=\"margin:8px 0;\">\n            <a href=\"#\" class=\"dl-item\"\n               data-link=\"https:\/\/trieuminh.com\/wp-content\/uploads\/2026\/04\/Thuyet-minh-thiet-ke-he-thong-Dieu-hoa-khong-khi-va-thong-gio.docx\"\n               data-time=\"30\"\n               data-text=\"THUY\u1ebeT MINH TKKT \u0110I\u1ec0U H\u00d2A KH\u00d4NG KH\u00cd V\u00c0 TH\u00d4NG GI\u00d3&lt;br \/&gt;\"\n               style=\"color:#007bff;font-weight:bold;text-transform:uppercase;text-decoration:none;\">\n               THUY\u1ebeT MINH TKKT \u0110I\u1ec0U H\u00d2A KH\u00d4NG KH\u00cd V\u00c0 TH\u00d4NG GI\u00d3<br \/>\n            <\/a>\n        <\/div><div style=\"margin:8px 0;\">\n            <a href=\"#\" class=\"dl-item\"\n               data-link=\"https:\/\/trieuminh.com\/wp-content\/uploads\/2026\/04\/Bang-tinh-quat-tang-ap.xls\"\n               data-time=\"30\"\n               data-text=\"B\u1ea2NG T\u00cdNH QU\u1ea0T T\u0102NG \u00c1P&lt;br \/&gt;\"\n               style=\"color:#007bff;font-weight:bold;text-transform:uppercase;text-decoration:none;\">\n               B\u1ea2NG T\u00cdNH QU\u1ea0T T\u0102NG \u00c1P<br \/>\n            <\/a>\n        <\/div><div style=\"margin:8px 0;\">\n            <a href=\"#\" class=\"dl-item\"\n               data-link=\"https:\/\/trieuminh.com\/wp-content\/uploads\/2026\/04\/Bang-tinh-thong-gio-tai-lanh.xls\"\n               data-time=\"30\"\n               data-text=\"B\u1ea2NG T\u00cdNH TH\u00d4NG GI\u00d3, T\u1ea2I L\u1ea0NH\"\n               style=\"color:#007bff;font-weight:bold;text-transform:uppercase;text-decoration:none;\">\n               B\u1ea2NG T\u00cdNH TH\u00d4NG GI\u00d3, T\u1ea2I L\u1ea0NH\n            <\/a>\n        <\/div>\n<h1 data-section-id=\"7h57oc\" data-start=\"4281\" data-end=\"4322\"><span class=\"ez-toc-section\" id=\"Lien_He\"><\/span>Li\u00ean H\u1ec7<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p><strong>TRIEU MINH ENGINEERING COMPANY<\/strong><\/p>\n<p><strong>\u0110\u1ecaA CH\u1ec8: 109 NGUY\u1ec4N TH\u1eca NHUNG. P. HI\u1ec6P B\u00ccNH, TP. H\u1ed2 CH\u00cd MINH<\/strong><\/p>\n<p><strong>MAIL: TRIEUMINH@TRIEUMINH.COM<\/strong><\/p>\n<p><strong>\u0110I\u1ec6N THO\u1ea0I (ZALO): 0976.422.223<\/strong><\/p>\n<p>More<\/p>\n<p><a title=\"H\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed v\u00e0 th\u00f4ng gi\u00f3\" href=\"https:\/\/trieuminh.com\/en\/thi-cong-he-thong-dieu-hoa-khong-khi-va-thong-gio\/\">H\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed v\u00e0 th\u00f4ng gi\u00f3<\/a><\/p>\n<p><a title=\"Main MEP contractor Trieu Minh\" href=\"https:\/\/trieuminh.com\/en\/tong-thau-co-dien-mep-design-build\/\">Main MEP contractor Trieu Minh<\/a><\/p>\n<p><a title=\"Fanpage Tri\u1ec1u Minh\" href=\"https:\/\/www.facebook.com\/profile.php?id=61586129903680\" target=\"_blank\" rel=\"noopener\">Fanpage Tri\u1ec1u Minh<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>PH\u01af\u01a0NG PH\u00c1P T\u00cdNH K\u00cdCH TH\u01af\u1edaC \u1ed0NG GI\u00d3 TRONG H\u1ec6 TH\u1ed0NG\u00a0 HVAC Trong thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed v\u00e0 th\u00f4ng gi\u00f3 HVAC, vi\u1ec7c t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 l\u00e0 b\u01b0\u1edbc c\u1ef1c k\u1ef3 quan tr\u1ecdng. K\u00edch th\u01b0\u1edbc \u1ed1ng gi\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u qu\u1ea3 v\u1eadn h\u00e0nh c\u1ee7a h\u1ec7 th\u1ed1ng, bao g\u1ed3m<\/p>","protected":false},"author":1,"featured_media":819,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[847,56,54,53,1126,55,39,1125,79],"class_list":["post-815","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-bang-tinh-thong-gio","tag-hvac","tag-san-xuat-ong-gio","tag-thi-cong-ong-gio","tag-thiet-ke-ong-gio","tag-thiet-ke-thong-gio","tag-thong-gio","tag-tinh-ong-gio-online","tag-xuong-ong-gio"],"_links":{"self":[{"href":"https:\/\/trieuminh.com\/en\/wp-json\/wp\/v2\/posts\/815","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/trieuminh.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/trieuminh.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/trieuminh.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/trieuminh.com\/en\/wp-json\/wp\/v2\/comments?post=815"}],"version-history":[{"count":9,"href":"https:\/\/trieuminh.com\/en\/wp-json\/wp\/v2\/posts\/815\/revisions"}],"predecessor-version":[{"id":2159,"href":"https:\/\/trieuminh.com\/en\/wp-json\/wp\/v2\/posts\/815\/revisions\/2159"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/trieuminh.com\/en\/wp-json\/wp\/v2\/media\/819"}],"wp:attachment":[{"href":"https:\/\/trieuminh.com\/en\/wp-json\/wp\/v2\/media?parent=815"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/trieuminh.com\/en\/wp-json\/wp\/v2\/categories?post=815"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/trieuminh.com\/en\/wp-json\/wp\/v2\/tags?post=815"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}