{"id":700331,"date":"2024-11-30T13:10:09","date_gmt":"2024-11-30T12:10:09","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=700331"},"modified":"2024-11-30T13:10:09","modified_gmt":"2024-11-30T12:10:09","slug":"truyen-nhiet-buc-xa-trong-mang-mong","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/truyen-nhiet-buc-xa-trong-mang-mong\/","title":{"rendered":"Truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 trong m\u00e0ng m\u1ecfng"},"content":{"rendered":"<p class=\"sidekick\">Truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 trong m\u00e0ng m\u1ecfng: Gi\u1ea3i th\u00edch nguy\u00ean l\u00fd, c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng trong th\u1ef1c t\u1ebf, gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u01a1 ch\u1ebf n\u00e0y.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/truyen_nhiet_buc_xa_trong_mang_mong.png\" alt=\"Truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 trong m\u00e0ng m\u1ecfng\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>Truy\u1ec1n Nhi\u1ec7t B\u1ee9c X\u1ea1 Trong M\u00e0ng M\u1ecfng<\/h2>\n<p>Truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 l\u00e0 m\u1ed9t trong ba c\u01a1 ch\u1ebf truy\u1ec1n nhi\u1ec7t ch\u00ednh, c\u00f9ng v\u1edbi truy\u1ec1n nhi\u1ec7t d\u1eabn v\u00e0 truy\u1ec1n nhi\u1ec7t \u0111\u1ed1i l\u01b0u. Trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf, truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 trong m\u00e0ng m\u1ecfng th\u01b0\u1eddng g\u1eb7p trong c\u00e1c l\u0129nh v\u1ef1c nh\u01b0 c\u00f4ng ngh\u1ec7 n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi, \u0111i\u1ec7n t\u1eed v\u00e0 c\u00e1c v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t.<\/p>\n<h2>Nguy\u00ean L\u00fd C\u1ee7a Truy\u1ec1n Nhi\u1ec7t B\u1ee9c X\u1ea1<\/h2>\n<p>Truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 li\u00ean quan \u0111\u1ebfn vi\u1ec7c n\u0103ng l\u01b0\u1ee3ng di chuy\u1ec3n d\u01b0\u1edbi d\u1ea1ng s\u00f3ng \u0111i\u1ec7n t\u1eeb. N\u00f3 kh\u00f4ng c\u1ea7n m\u00f4i tr\u01b0\u1eddng v\u1eadt l\u00fd \u0111\u1ec3 truy\u1ec1n d\u1eabn, ng\u01b0\u1ee3c l\u1ea1i v\u1edbi truy\u1ec1n nhi\u1ec7t d\u1eabn v\u00e0 truy\u1ec1n nhi\u1ec7t \u0111\u1ed1i l\u01b0u. C\u00f4ng th\u1ee9c c\u01a1 b\u1ea3n c\u1ee7a truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 b\u1edfi \u0111\u1ecbnh lu\u1eadt Stefan-Boltzmann:<\/p>\n<p><i>Q<\/i> = \u03b5 * \u03c3 * A * (T<sub>1<\/sub><sup>4<\/sup> &#8211; T<sub>2<\/sub><sup>4<\/sup>)<\/p>\n<ul>\n<li><i>Q<\/i> l\u00e0 l\u01b0\u1ee3ng nhi\u1ec7t truy\u1ec1n b\u1ee9c x\u1ea1 (W)<\/li>\n<li>\u03b5 l\u00e0 \u0111\u1ed9 ph\u00e1t x\u1ea1 c\u1ee7a b\u1ec1 m\u1eb7t<\/li>\n<li>\u03c3 l\u00e0 h\u1eb1ng s\u1ed1 Stefan-Boltzmann (5.67 x 10<sup>-8<\/sup> W\/m<sup>2<\/sup>K<sup>4<\/sup>)<\/li>\n<li>A l\u00e0 di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t (m<sup>2<\/sup>)<\/li>\n<li>T<sub>1<\/sub> v\u00e0 T<sub>2<\/sub> l\u00e0 nhi\u1ec7t \u0111\u1ed9 c\u1ee7a c\u00e1c b\u1ec1 m\u1eb7t (K)<\/li>\n<\/ul>\n<h2>\u1ee8ng D\u1ee5ng Trong M\u00e0ng M\u1ecfng<\/h2>\n<p>Trong c\u00e1c m\u00e0ng m\u1ecfng, vi\u1ec7c truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec1u y\u1ebfu t\u1ed1 nh\u01b0 \u0111\u1ed9 d\u00e0y c\u1ee7a m\u00e0ng, v\u1eadt li\u1ec7u, v\u00e0 t\u00ecnh tr\u1ea1ng b\u1ec1 m\u1eb7t. \u0110\u1eb7c t\u00ednh ph\u00e1t x\u1ea1 c\u1ee7a m\u00e0ng m\u1ecfng c\u00f3 th\u1ec3 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 so v\u1edbi c\u00e1c b\u1ec1 m\u1eb7t d\u00e0y h\u01a1n.<\/p>\n<ol>\n<li><b>\u0110\u1ed9 D\u00e0y:<\/b> M\u00e0ng m\u1ecfng c\u00f3 th\u1ec3 c\u00f3 \u0111\u1ed9 d\u00e0y t\u1eeb v\u00e0i nanomet t\u1edbi v\u00e0i micromet. \u0110\u1ed9 d\u00e0y n\u00e0y \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn kh\u1ea3 n\u0103ng ph\u00e1t x\u1ea1 c\u1ee7a b\u1ec1 m\u1eb7t.<\/li>\n<li><b>V\u1eadt Li\u1ec7u:<\/b> V\u1eadt li\u1ec7u l\u00e0m m\u00e0ng c\u00f3 th\u1ec3 l\u00e0 kim lo\u1ea1i, polymer ho\u1eb7c g\u1ed1m s\u1ee9. M\u1ed7i lo\u1ea1i v\u1eadt li\u1ec7u s\u1ebd c\u00f3 \u0111\u1ed9 ph\u00e1t x\u1ea1 kh\u00e1c nhau, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1.<\/li>\n<li><b>T\u00ecnh Tr\u1ea1ng B\u1ec1 M\u1eb7t:<\/b> B\u1ec1 m\u1eb7t s\u1ea1ch, nh\u1eb5n m\u1ecbn s\u1ebd c\u00f3 \u0111\u1eb7c t\u00ednh b\u1ee9c x\u1ea1 kh\u00e1c so v\u1edbi b\u1ec1 m\u1eb7t b\u1ecb oxy h\u00f3a ho\u1eb7c c\u00f3 l\u1edbp ph\u1ee7.<\/li>\n<\/ol>\n<p>Trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf, c\u00e1c m\u00e0ng m\u1ecfng th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 l\u1edbp ph\u1ee7 \u0111\u1ec3 gi\u1ea3m t\u1ed5n th\u1ea5t nhi\u1ec7t ho\u1eb7c l\u00e0m t\u0103ng hi\u1ec7u su\u1ea5t ph\u1ea3n x\u1ea1 nhi\u1ec7t, v\u00ed d\u1ee5 nh\u01b0 trong ng\u00e0nh c\u00f4ng ngh\u1ec7 n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a quy tr\u00ecnh h\u1ea5p th\u1ee5 nhi\u1ec7t.<\/p>\n<h2>Ph\u00e2n T\u00edch V\u00e0 T\u00ednh To\u00e1n<\/h2>\n<p>Vi\u1ec7c ph\u00e2n t\u00edch truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 trong m\u00e0ng m\u1ecfng \u0111\u00f2i h\u1ecfi ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n chi ti\u1ebft h\u01a1n, bao g\u1ed3m:<\/p>\n<ul>\n<li>Ph\u00e2n t\u00edch \u0111\u1eb7c t\u00ednh quang h\u1ecdc c\u1ee7a m\u00e0ng m\u1ecfng<\/li>\n<li>X\u00e1c \u0111\u1ecbnh c\u00e1c h\u1ec7 s\u1ed1 ph\u00e1t x\u1ea1 qua c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c nghi\u1ec7m<\/li>\n<\/ul>\n<p>Ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch s\u1ed1 nh\u01b0 m\u00f4 ph\u1ecfng s\u1ed1 v\u1edbi c\u00e1c ph\u1ea7n m\u1ec1m chuy\u00ean d\u1ee5ng c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 trong m\u00e0ng m\u1ecfng v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c cao.<\/p>\n<h2>K\u1ebft Lu\u1eadn<\/h2>\n<p>Truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 trong m\u00e0ng m\u1ecfng l\u00e0 m\u1ed9t l\u0129nh v\u1ef1c quan tr\u1ecdng trong ng\u00e0nh k\u1ef9 thu\u1eadt nhi\u1ec7t. Hi\u1ec3u r\u00f5 v\u1ec1 c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng v\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n s\u1ebd gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 cao. Vi\u1ec7c nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n c\u00e1c v\u1eadt li\u1ec7u m\u00e0ng m\u1ecfng c\u00f3 kh\u1ea3 n\u0103ng ph\u00e1t x\u1ea1 t\u1ed1t h\u1ee9a h\u1eb9n mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p hi\u1ec7n \u0111\u1ea1i.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 trong m\u00e0ng m\u1ecfng: Gi\u1ea3i th\u00edch nguy\u00ean l\u00fd, c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng trong th\u1ef1c t\u1ebf, gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u01a1 ch\u1ebf n\u00e0y.<\/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 b\u1ee9c 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