{"id":710009,"date":"2024-08-31T03:31:01","date_gmt":"2024-08-31T02:31:01","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=710009"},"modified":"2024-08-31T03:31:01","modified_gmt":"2024-08-31T02:31:01","slug":"truyen-nhiet-trong-he-thong-sinh-hoc","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/truyen-nhiet-trong-he-thong-sinh-hoc\/","title":{"rendered":"Truy\u1ec1n nhi\u1ec7t trong h\u1ec7 th\u1ed1ng sinh h\u1ecdc"},"content":{"rendered":"<p class=\"sidekick\">Truy\u1ec1n nhi\u1ec7t trong h\u1ec7 th\u1ed1ng sinh h\u1ecdc: Gi\u1ea3i th\u00edch c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch nhi\u1ec7t truy\u1ec1n trong c\u01a1 th\u1ec3 s\u1ed1ng, quy tr\u00ecnh quan tr\u1ecdng trong y h\u1ecdc v\u00e0 c\u00f4ng ngh\u1ec7 sinh h\u1ecdc.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/truyen_nhiet_trong_he_thong_sinh_hoc.png\" alt=\"Truy\u1ec1n nhi\u1ec7t trong h\u1ec7 th\u1ed1ng sinh h\u1ecdc\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>Truy\u1ec1n Nhi\u1ec7t Trong H\u1ec7 Th\u1ed1ng Sinh H\u1ecdc<\/h2>\n<p>Trong c\u00e1c h\u1ec7 th\u1ed1ng sinh h\u1ecdc, truy\u1ec1n nhi\u1ec7t l\u00e0 qu\u00e1 tr\u00ecnh quan tr\u1ecdng gi\u00fap duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 c\u01a1 th\u1ec3 v\u00e0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n l\u00fd t\u01b0\u1edfng cho c\u00e1c ph\u1ea3n \u1ee9ng sinh h\u1ecdc. Truy\u1ec1n nhi\u1ec7t x\u1ea3y ra theo ba c\u00e1ch ch\u00ednh: d\u1eabn nhi\u1ec7t, \u0111\u1ed1i l\u01b0u v\u00e0 b\u1ee9c x\u1ea1.<\/p>\n<h2>D\u1eabn Nhi\u1ec7t (Conduction)<\/h2>\n<p>D\u1eabn nhi\u1ec7t x\u1ea3y ra khi nhi\u1ec7t \u0111\u01b0\u1ee3c truy\u1ec1n t\u1eeb v\u00f9ng n\u00f3ng sang v\u00f9ng l\u1ea1nh qua m\u1ed9t v\u1eadt li\u1ec7u trung gian. Trong c\u01a1 th\u1ec3 con ng\u01b0\u1eddi, d\u1eabn nhi\u1ec7t di\u1ec5n ra qua c\u00e1c m\u00f4 v\u00e0 ch\u1ea5t l\u1ecfng c\u01a1 th\u1ec3. C\u00f4ng th\u1ee9c t\u00ednh d\u1eabn nhi\u1ec7t \u0111\u01a1n gi\u1ea3n l\u00e0:<\/p>\n<p><b>Q = k * A * (T<sub>h<\/sub> &#8211; T<sub>c<\/sub>) \/ d<\/b><\/p>\n<p>Trong \u0111\u00f3:<\/p>\n<p><u1><\/p>\n<li><b>Q<\/b>: L\u01b0\u1ee3ng nhi\u1ec7t truy\u1ec1n (W)<\/li>\n<li><b>k<\/b>: H\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u (W\/m\u00b7K)<\/li>\n<li><b>A<\/b>: Di\u1ec7n t\u00edch trao \u0111\u1ed5i nhi\u1ec7t (m\u00b2)<\/li>\n<li><b>T<sub>h<\/sub><\/b>: Nhi\u1ec7t \u0111\u1ed9 cao (K)<\/li>\n<li><b>T<sub>c<\/sub><\/b>: Nhi\u1ec7t \u0111\u1ed9 th\u1ea5p (K)<\/li>\n<li><b>d<\/b>: \u0110\u1ed9 d\u00e0y c\u1ee7a v\u1eadt li\u1ec7u (m)<\/li>\n<p><\/u1><\/p>\n<h2>\u0110\u1ed1i L\u01b0u (Convection)<\/h2>\n<p>\u0110\u1ed1i l\u01b0u l\u00e0 qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t t\u1eeb m\u1ed9t v\u1eadt th\u1ec3 r\u1eafn \u0111\u1ebfn ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed ti\u1ebfp x\u00fac v\u1edbi n\u00f3 do s\u1ef1 chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed. Trong h\u1ec7 th\u1ed1ng sinh h\u1ecdc, \u0111\u1ed1i l\u01b0u x\u1ea3y ra khi m\u00e1u l\u01b0u th\u00f4ng trong c\u01a1 th\u1ec3, mang theo nhi\u1ec7t t\u1eeb c\u00e1c c\u01a1 quan n\u00f3ng h\u01a1n \u0111\u1ebfn c\u00e1c c\u01a1 quan l\u1ea1nh h\u01a1n. C\u00f4ng th\u1ee9c t\u00ednh \u0111\u1ed1i l\u01b0u l\u00e0:<\/p>\n<p><b>Q = h * A * (T<sub>s<\/sub> &#8211; T<sub>f<\/sub>)<\/b><\/p>\n<p>Trong \u0111\u00f3:<\/p>\n<p><u1><\/p>\n<li><b>Q<\/b>: L\u01b0\u1ee3ng nhi\u1ec7t truy\u1ec1n (W)<\/li>\n<li><b>h<\/b>: H\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t \u0111\u1ed1i l\u01b0u (W\/m\u00b2\u00b7K)<\/li>\n<li><b>A<\/b>: Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac (m\u00b2)<\/li>\n<li><b>T<sub>s<\/sub><\/b>: Nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t (K)<\/li>\n<li><b>T<sub>f<\/sub><\/b>: Nhi\u1ec7t \u0111\u1ed9 c\u1ee7a ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed (K)<\/li>\n<p><\/u1><\/p>\n<h2>B\u1ee9c X\u1ea1 (Radiation)<\/h2>\n<p>B\u1ee9c x\u1ea1 l\u00e0 qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t qua kh\u00f4ng gian d\u01b0\u1edbi d\u1ea1ng s\u00f3ng \u0111i\u1ec7n t\u1eeb m\u00e0 kh\u00f4ng c\u1ea7n m\u00f4i ch\u1ea5t truy\u1ec1n nhi\u1ec7t. Trong sinh h\u1ecdc, b\u1ee9c x\u1ea1 nhi\u1ec7t t\u1eeb c\u01a1 th\u1ec3 m\u1ea5t v\u00e0o m\u00f4i tr\u01b0\u1eddng xung quanh. C\u00f4ng th\u1ee9c t\u00ednh b\u1ee9c x\u1ea1 l\u00e0:<\/p>\n<p><b>Q = \u03b5 * \u03c3 * A * (T<sub>s<\/sub>\u2074 &#8211; T<sub>e<\/sub>\u2074)<\/b><\/p>\n<p>Trong \u0111\u00f3:<\/p>\n<p><u1><\/p>\n<li><b>Q<\/b>: L\u01b0\u1ee3ng nhi\u1ec7t truy\u1ec1n (W)<\/li>\n<li><b>\u03b5<\/b>: H\u1ec7 s\u1ed1 ph\u00e1t x\u1ea1 c\u1ee7a b\u1ec1 m\u1eb7t (kh\u00f4ng c\u00f3 \u0111\u01a1n v\u1ecb)<\/li>\n<li><b>\u03c3<\/b>: H\u1eb1ng s\u1ed1 Stefan-Boltzmann (5.67 * 10<sup>-8<\/sup> W\/m\u00b2\u00b7K\u2074)<\/li>\n<li><b>A<\/b>: Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t (m\u00b2)<\/li>\n<li><b>T<sub>s<\/sub><\/b>: Nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t (K)<\/li>\n<li><b>T<sub>e<\/sub><\/b>: Nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng xung quanh (K)<\/li>\n<p><\/u1><\/p>\n<h2>\u1ee8ng D\u1ee5ng Trong Sinh H\u1ecdc<\/h2>\n<p>Trong c\u00e1c h\u1ec7 th\u1ed1ng sinh h\u1ecdc, vi\u1ec7c hi\u1ec3u r\u00f5 v\u00e0 \u0111i\u1ec1u khi\u1ec3n qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t l\u00e0 thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c ch\u1ee9c n\u0103ng sinh l\u00fd v\u00e0 sinh h\u00f3a ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3. V\u00ed d\u1ee5, trong y h\u1ecdc, vi\u1ec7c qu\u1ea3n l\u00fd nhi\u1ec7t \u0111\u1ed9 c\u01a1 th\u1ec3 b\u1ec7nh nh\u00e2n l\u00e0 r\u1ea5t quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh \u0111i\u1ec1u tr\u1ecb. Ngo\u00e0i ra, c\u00e1c thi\u1ebft b\u1ecb y t\u1ebf nh\u01b0 m\u00e1y l\u00e0m n\u00f3ng ho\u1eb7c l\u00e0m l\u1ea1nh c\u01a1 th\u1ec3 c\u0169ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd truy\u1ec1n nhi\u1ec7t.<\/p>\n<p>Nh\u00ecn chung, truy\u1ec1n nhi\u1ec7t trong h\u1ec7 th\u1ed1ng sinh h\u1ecdc kh\u00f4ng ch\u1ec9 gi\u00fap duy tr\u00ec s\u1ef1 s\u1ed1ng m\u00e0 c\u00f2n \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong c\u00e1c \u1ee9ng d\u1ee5ng y h\u1ecdc v\u00e0 c\u00f4ng ngh\u1ec7 sinh h\u1ecdc.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Truy\u1ec1n nhi\u1ec7t trong h\u1ec7 th\u1ed1ng sinh h\u1ecdc: Gi\u1ea3i th\u00edch c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch nhi\u1ec7t truy\u1ec1n trong c\u01a1 th\u1ec3 s\u1ed1ng, quy tr\u00ecnh quan tr\u1ecdng trong y h\u1ecdc v\u00e0 c\u00f4ng ngh\u1ec7 sinh h\u1ecdc.<\/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>Truy\u1ec1n nhi\u1ec7t trong h\u1ec7 th\u1ed1ng sinh h\u1ecdc<\/title>\n<meta name=\"description\" content=\"Truy\u1ec1n nhi\u1ec7t trong h\u1ec7 th\u1ed1ng sinh h\u1ecdc: Gi\u1ea3i th\u00edch c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch nhi\u1ec7t truy\u1ec1n trong c\u01a1 th\u1ec3 s\u1ed1ng, quy tr\u00ecnh quan tr\u1ecdng trong y h\u1ecdc v\u00e0 c\u00f4ng ngh\u1ec7 sinh h\u1ecdc.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.thermal-engineering.org\/vi\/truyen-nhiet-trong-he-thong-sinh-hoc\/\" \/>\n<meta property=\"og:locale\" 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