{"id":704271,"date":"2024-07-31T11:07:34","date_gmt":"2024-07-31T10:07:34","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=704271"},"modified":"2024-07-31T11:07:34","modified_gmt":"2024-07-31T10:07:34","slug":"bo-trao-doi-nhiet-dang-tam-hieu-suat-va-tinh-nho-gon","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/bo-trao-doi-nhiet-dang-tam-hieu-suat-va-tinh-nho-gon\/","title":{"rendered":"B\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t d\u1ea1ng t\u1ea5m | Hi\u1ec7u su\u1ea5t v\u00e0 ti\u0301nh nh\u1ecf g\u1ecdn"},"content":{"rendered":"<p class=\"sidekick\">B\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t d\u1ea1ng t\u1ea5m | Hi\u1ec7u su\u1ea5t v\u00e0 t\u00ednh nh\u1ecf g\u1ecdn: T\u00ecm hi\u1ec3u c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t d\u1ea1ng t\u1ea5m, \u01afu \u0111i\u1ec3m v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 ti\u1ebft ki\u1ec7m kh\u00f4ng gian.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/bo_trao_doi_nhiet_dang_tam_hieu_suat_va_tinh_nho_gon.png\" alt=\"B\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t d\u1ea1ng t\u1ea5m | Hi\u1ec7u su\u1ea5t v\u00e0 ti\u0301nh nh\u1ecf g\u1ecdn\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>B\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t d\u1ea1ng t\u1ea5m: Hi\u1ec7u su\u1ea5t v\u00e0 T\u00ednh nh\u1ecf g\u1ecdn<\/h2>\n<p>B\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t d\u1ea1ng t\u1ea5m (PHE &#8211; Plate Heat Exchanger) l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong ng\u00e0nh nhi\u1ec7t h\u1ecdc. V\u1edbi c\u1ea5u tr\u00fac th\u00f4ng minh v\u00e0 kh\u1ea3 n\u0103ng trao \u0111\u1ed5i nhi\u1ec7t hi\u1ec7u qu\u1ea3, PHE ng\u00e0y c\u00e0ng tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p v\u00e0 d\u00e2n d\u1ee5ng. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd tr\u00ecnh b\u00e0y chi ti\u1ebft v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 t\u00ednh nh\u1ecf g\u1ecdn c\u1ee7a b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t d\u1ea1ng t\u1ea5m.<\/p>\n<h2>Hi\u1ec7u su\u1ea5t c\u1ee7a B\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t d\u1ea1ng t\u1ea5m<\/h2>\n<p>Hi\u1ec7u su\u1ea5t c\u1ee7a b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t d\u1ea1ng t\u1ea5m ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1 nh\u01b0 ch\u1ea5t li\u1ec7u, thi\u1ebft k\u1ebf t\u1ea5m, qu\u1ea3n l\u00fd ch\u1ea5t l\u1ecfng v\u00e0 \u0111i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 ch\u00ednh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t:<\/p>\n<p><u1><\/p>\n<li><b>Thi\u1ebft k\u1ebf t\u1ea5m:<\/b> C\u00e1c t\u1ea5m trong PHE th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u1eadp n\u1ed5i v\u1edbi nhi\u1ec1u h\u00ecnh d\u1ea1ng kh\u00e1c nhau, t\u1ea1o ra c\u00e1c k\u00eanh nh\u1ecf \u0111\u1ec3 t\u0103ng di\u1ec7n t\u00edch ti\u1ebfp x\u00fac v\u00e0 t\u1ea1o d\u00f2ng ch\u1ea3y r\u1ed1i, c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng trao \u0111\u1ed5i nhi\u1ec7t.<\/li>\n<li><b>Ch\u1ea5t li\u1ec7u:<\/b> C\u00e1c t\u1ea5m th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb th\u00e9p kh\u00f4ng g\u1ec9, titan ho\u1eb7c c\u00e1c h\u1ee3p kim ch\u1ecbu \u0103n m\u00f2n, gi\u00fap t\u0103ng hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n.<\/li>\n<li><b>Qu\u1ea3n l\u00fd ch\u1ea5t l\u1ecfng:<\/b> S\u1ef1 ph\u00e2n b\u1ed1 \u0111\u1ec1u ch\u1ea5t l\u1ecfng qua c\u00e1c t\u1ea5m v\u00e0 t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y c\u0169ng \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn hi\u1ec7u su\u1ea5t. \u0110i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi m\u1ed9t h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd ch\u1ea5t l\u1ecfng hi\u1ec7u qu\u1ea3.<\/li>\n<p><\/u1><\/p>\n<p>Hi\u1ec7u su\u1ea5t c\u1ee7a b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t d\u1ea1ng t\u1ea5m th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u th\u1ecb qua h\u1ec7 s\u1ed1 trao \u0111\u1ed5i nhi\u1ec7t t\u1ed5ng qu\u00e1t K. H\u1ec7 s\u1ed1 n\u00e0y \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi c\u00f4ng th\u1ee9c:<\/p>\n<p>\\[<br \/>\nQ = K \\cdot A \\cdot \\Delta T<br \/>\n\\]\n<p>Trong \u0111\u00f3:<\/p>\n<p><o1><\/p>\n<li>Q l\u00e0 l\u01b0\u1ee3ng nhi\u1ec7t chuy\u1ec3n \u0111\u1ed5i (W)<\/li>\n<li>K l\u00e0 h\u1ec7 s\u1ed1 trao \u0111\u1ed5i nhi\u1ec7t (W\/m<sup>2<\/sup>K)<\/li>\n<li>A l\u00e0 di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t trao \u0111\u1ed5i nhi\u1ec7t (m<sup>2<\/sup>)<\/li>\n<li>\\(\\Delta T\\) l\u00e0 s\u1ef1 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 gi\u1eefa ch\u1ea5t l\u1ecfng n\u00f3ng v\u00e0 l\u1ea1nh (K)<\/li>\n<p><\/o1><\/p>\n<h2>T\u00ednh nh\u1ecf g\u1ecdn c\u1ee7a B\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t d\u1ea1ng t\u1ea5m<\/h2>\n<p>M\u1ed9t trong nh\u1eefng \u01b0u \u0111i\u1ec3m quan tr\u1ecdng nh\u1ea5t c\u1ee7a b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t d\u1ea1ng t\u1ea5m l\u00e0 t\u00ednh nh\u1ecf g\u1ecdn. \u0110i\u1ec1u n\u00e0y c\u00f3 \u0111\u01b0\u1ee3c do:<\/p>\n<p><u1><\/p>\n<li><b>Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t l\u1edbn:<\/b> C\u00e1c t\u1ea5m m\u1ecfng v\u1edbi c\u1ea5u tr\u00fac d\u1eadp n\u1ed5i t\u1ea1o ra m\u1ed9t di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t trao \u0111\u1ed5i nhi\u1ec7t l\u1edbn trong m\u1ed9t kh\u00f4ng gian nh\u1ecf.<\/li>\n<li><b>Thi\u1ebft k\u1ebf x\u1ebfp ch\u1ed3ng:<\/b> PHE s\u1eed d\u1ee5ng thi\u1ebft k\u1ebf x\u1ebfp ch\u1ed3ng c\u00e1c t\u1ea5m l\u00ean nhau, gi\u00fap ti\u1ebft ki\u1ec7m kh\u00f4ng gian v\u00e0 t\u1ea1o ra m\u00f4-\u0111un d\u1ec5 d\u00e0ng b\u1ea3o tr\u00ec v\u00e0 m\u1edf r\u1ed9ng.<\/li>\n<li><b>Kh\u1ea3 n\u0103ng t\u00f9y bi\u1ebfn:<\/b> C\u00e1c t\u1ea5m c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u00eam ho\u1eb7c b\u1edbt m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh c\u00f4ng su\u1ea5t trao \u0111\u1ed5i nhi\u1ec7t theo nhu c\u1ea7u c\u1ee5 th\u1ec3.<\/li>\n<p><\/u1><\/p>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>B\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t d\u1ea1ng t\u1ea5m l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p hi\u1ec7u qu\u1ea3 v\u00e0 nh\u1ecf g\u1ecdn cho c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u trao \u0111\u1ed5i nhi\u1ec7t. V\u1edbi thi\u1ebft k\u1ebf linh ho\u1ea1t v\u00e0 hi\u1ec7u su\u1ea5t cao, PHE \u0111ang d\u1ea7n tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p. Kh\u1ea3 n\u0103ng \u0111i\u1ec1u ch\u1ec9nh linh ho\u1ea1t v\u00e0 b\u1ea3o tr\u00ec d\u1ec5 d\u00e0ng c\u0169ng l\u00e0 nh\u1eefng \u0111i\u1ec3m m\u1ea1nh gi\u00fap PHE n\u1ed5i b\u1eadt so v\u1edbi c\u00e1c lo\u1ea1i b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t kh\u00e1c.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>B\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t d\u1ea1ng t\u1ea5m | Hi\u1ec7u su\u1ea5t v\u00e0 t\u00ednh nh\u1ecf g\u1ecdn: T\u00ecm hi\u1ec3u c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t d\u1ea1ng t\u1ea5m, \u01afu \u0111i\u1ec3m v\u01b0\u1ee3t tr\u1ed9i v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 ti\u1ebft ki\u1ec7m kh\u00f4ng gian.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ 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