{"id":700141,"date":"2024-09-11T00:44:18","date_gmt":"2024-09-10T23:44:18","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=700141"},"modified":"2024-09-11T00:44:18","modified_gmt":"2024-09-10T23:44:18","slug":"do-he-so-truyen-nhiet","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/do-he-so-truyen-nhiet\/","title":{"rendered":"\u0110o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t"},"content":{"rendered":"<p class=\"sidekick\">\u0110o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t: H\u01b0\u1edbng d\u1eabn c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch t\u00ednh h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111o l\u01b0\u1eddng ph\u1ed5 bi\u1ebfn v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n trong k\u1ef9 thu\u1eadt nhi\u1ec7t.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/do_he_so_truyen_nhiet.png\" alt=\"\u0110o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>\u0110o H\u1ec7 S\u1ed1 Truy\u1ec1n Nhi\u1ec7t<\/h2>\n<p>Trong ng\u00e0nh k\u1ef9 thu\u1eadt nhi\u1ec7t, h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 quan tr\u1ecdng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng truy\u1ec1n nhi\u1ec7t gi\u1eefa c\u00e1c b\u1ec1 m\u1eb7t trong qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i nhi\u1ec7t. Vi\u1ec7c \u0111o l\u01b0\u1eddng ch\u00ednh x\u00e1c h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t gi\u00fap x\u00e1c \u0111\u1ecbnh hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb trao \u0111\u1ed5i nhi\u1ec7t nh\u01b0 b\u00ecnh ng\u01b0ng, n\u1ed3i h\u01a1i, v\u00e0 b\u1ed9 t\u1ea3n nhi\u1ec7t.<\/p>\n<h2>\u0110\u1ecbnh Ngh\u0129a H\u1ec7 S\u1ed1 Truy\u1ec1n Nhi\u1ec7t<\/h2>\n<p>H\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t, th\u01b0\u1eddng k\u00fd hi\u1ec7u l\u00e0 <i>U<\/i>, bi\u1ec3u th\u1ecb l\u01b0\u1ee3ng nhi\u1ec7t truy\u1ec1n qua m\u1ed9t \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch trong m\u1ed9t \u0111\u01a1n v\u1ecb th\u1eddi gian cho m\u1ed7i \u0111\u1ed9 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9. C\u00f4ng th\u1ee9c t\u00ednh h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t l\u00e0:<\/p>\n<p>\nU = \\frac{Q}{A \\cdot \u0394T \\cdot t}\n<\/p>\n<ul>\n<li><i>Q<\/i> l\u00e0 l\u01b0\u1ee3ng nhi\u1ec7t truy\u1ec1n (W).<\/li>\n<li><i>A<\/i> l\u00e0 di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t trao \u0111\u1ed5i nhi\u1ec7t (m<sup>2<\/sup>).<\/li>\n<li><i>\u0394T<\/i> l\u00e0 \u0111\u1ed9 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 (\u00b0C ho\u1eb7c K).<\/li>\n<li><i>t<\/i> l\u00e0 th\u1eddi gian (s).<\/li>\n<\/ul>\n<h2>C\u00e1c Ph\u01b0\u01a1ng Ph\u00e1p \u0110o H\u1ec7 S\u1ed1 Truy\u1ec1n Nhi\u1ec7t<\/h2>\n<p>\u0110\u1ec3 \u0111o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t, ta c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c nghi\u1ec7m v\u00e0 ph\u00e2n t\u00edch. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh:<\/p>\n<p><u1><\/p>\n<li><b>Ph\u01b0\u01a1ng Ph\u00e1p Tr\u1ef1c Ti\u1ebfp:<\/b> \u0110o l\u01b0u l\u01b0\u1ee3ng nhi\u1ec7t tr\u1ef1c ti\u1ebfp qua c\u00e1c b\u1ec1 m\u1eb7t trao \u0111\u1ed5i nhi\u1ec7t v\u00e0 t\u00ednh to\u00e1n theo c\u00f4ng th\u1ee9c tr\u00ean.<\/li>\n<li><b>Ph\u01b0\u01a1ng Ph\u00e1p Gi\u00e1n Ti\u1ebfp:<\/b> S\u1eed d\u1ee5ng d\u1eef li\u1ec7u t\u1eeb qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i nhi\u1ec7t v\u00e0 c\u00e1c h\u1ec7 s\u1ed1 t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u1ec3 suy ra h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t.<\/li>\n<li><b>Ph\u01b0\u01a1ng Ph\u00e1p M\u00f4 H\u00ecnh H\u00f3a:<\/b> S\u1eed d\u1ee5ng m\u00f4 h\u00ecnh to\u00e1n h\u1ecdc v\u00e0 ph\u1ea7n m\u1ec1m m\u00f4 ph\u1ecfng \u0111\u1ec3 \u01b0\u1edbc l\u01b0\u1ee3ng h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t.<\/li>\n<p><\/u1><\/p>\n<h2>Thi\u1ebft B\u1ecb \u0110o H\u1ec7 S\u1ed1 Truy\u1ec1n Nhi\u1ec7t<\/h2>\n<p>Trong th\u1ef1c t\u1ebf, \u0111\u1ec3 \u0111o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t, ta th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb sau:<\/p>\n<p><u1><\/p>\n<li><b>C\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111\u1ed9:<\/b> \u0110\u01b0\u1ee3c \u0111\u1eb7t \u1edf hai ph\u00eda c\u1ee7a b\u1ec1 m\u1eb7t \u0111\u1ec3 \u0111o nhi\u1ec7t \u0111\u1ed9 ch\u00eanh l\u1ec7ch.<\/li>\n<li><b>Flowmeter:<\/b> \u0110\u1ec3 \u0111o l\u01b0u l\u01b0\u1ee3ng c\u1ee7a ch\u1ea5t trao \u0111\u1ed5i nhi\u1ec7t.<\/li>\n<li><b>C\u1ea3m bi\u1ebfn nhi\u1ec7t l\u01b0\u1ee3ng:<\/b> \u0110o t\u1ed5ng l\u01b0\u1ee3ng nhi\u1ec7t truy\u1ec1n qua b\u1ec1 m\u1eb7t.<\/li>\n<p><\/u1><\/p>\n<h2>\u1ee8ng D\u1ee5ng c\u1ee7a H\u1ec7 S\u1ed1 Truy\u1ec1n Nhi\u1ec7t<\/h2>\n<p>H\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t c\u00f3 r\u1ea5t nhi\u1ec1u \u1ee9ng d\u1ee5ng trong th\u1ef1c t\u1ebf:<\/p>\n<p><u1><\/p>\n<li><b>Thi\u1ebft K\u1ebf H\u1ec7 Th\u1ed1ng \u0110i\u1ec1u H\u00f2a:<\/b> Gi\u00fap t\u0103ng hi\u1ec7u qu\u1ea3 l\u00e0m m\u00e1t v\u00e0 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng.<\/li>\n<li><b>C\u00f4ng Nghi\u1ec7p Ch\u1ebf Bi\u1ebfn Th\u1ef1c Ph\u1ea9m:<\/b> \u0110\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c ch\u1ebf bi\u1ebfn \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f9 h\u1ee3p.<\/li>\n<li><b>C\u00e1c Nh\u00e0 M\u00e1y N\u0103ng L\u01b0\u1ee3ng:<\/b> T\u1ed1i \u01b0u h\u00f3a qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t trong c\u00e1c l\u00f2 ph\u1ea3n \u1ee9ng v\u00e0 m\u00e1y ph\u00e1t \u0111i\u1ec7n.<\/li>\n<p><\/u1><\/p>\n<p>Vi\u1ec7c hi\u1ec3u v\u00e0 \u0111o l\u01b0\u1eddng h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t l\u00e0 v\u00f4 c\u00f9ng quan tr\u1ecdng trong vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng nhi\u1ec7t. Hy v\u1ecdng b\u00e0i vi\u1ebft n\u00e0y mang l\u1ea1i nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u00e0 h\u1eefu \u00edch v\u1ec1 h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0110o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t: H\u01b0\u1edbng d\u1eabn c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch t\u00ednh h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111o l\u01b0\u1eddng ph\u1ed5 bi\u1ebfn v\u00e0 \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n trong k\u1ef9 thu\u1eadt nhi\u1ec7t.<\/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\/ -->\n<title>\u0110o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t<\/title>\n<meta name=\"description\" content=\"\u0110o h\u1ec7 s\u1ed1 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