{"id":705815,"date":"2024-08-12T11:24:50","date_gmt":"2024-08-12T10:24:50","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=705815"},"modified":"2024-08-12T11:24:50","modified_gmt":"2024-08-12T10:24:50","slug":"tan-nhiet-lam-mat-dien-tu-va-thiet-ke","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/tan-nhiet-lam-mat-dien-tu-va-thiet-ke\/","title":{"rendered":"T\u1ea3n Nhi\u1ec7t: L\u00e0m M\u00e1t \u0110i\u1ec7n T\u1eed v\u00e0 Thi\u1ebft K\u1ebf"},"content":{"rendered":"<p class=\"sidekick\">T\u1ea3n nhi\u1ec7t: L\u00e0m m\u00e1t \u0111i\u1ec7n t\u1eed v\u00e0 thi\u1ebft k\u1ebf, t\u00ecm hi\u1ec3u c\u00e1ch t\u1ea3n nhi\u1ec7t c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t hi\u1ec7u qu\u1ea3.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/tan_nhiet_lam_mat_dien_tu_va_thiet_ke.png\" alt=\"T\u1ea3n Nhi\u1ec7t: L\u00e0m M\u00e1t \u0110i\u1ec7n T\u1eed v\u00e0 Thi\u1ebft K\u1ebf\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>T\u1ea3n Nhi\u1ec7t: L\u00e0m M\u00e1t \u0110i\u1ec7n T\u1eed v\u00e0 Thi\u1ebft K\u1ebf<\/h2>\n<p>Trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t, vi\u1ec7c l\u00e0m m\u00e1t \u0111i\u1ec7n t\u1eed \u0111\u00f3ng m\u1ed9t vai tr\u00f2 v\u00f4 c\u00f9ng quan tr\u1ecdng. C\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed nh\u01b0 m\u00e1y t\u00ednh, \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh v\u00e0 c\u00e1c thi\u1ebft b\u1ecb c\u00f4ng nghi\u1ec7p \u0111\u1ec1u sinh ra nhi\u1ec7t trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng. \u0110\u1ec3 duy tr\u00ec hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb n\u00e0y, vi\u1ec7c t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3 l\u00e0 c\u1ea7n thi\u1ebft.<\/p>\n<h2>Nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a t\u1ea3n nhi\u1ec7t<\/h2>\n<p>T\u1ea3n nhi\u1ec7t l\u00e0 qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t t\u1eeb c\u00e1c linh ki\u1ec7n c\u00f4ng ngh\u1ec7 cao ra m\u00f4i tr\u01b0\u1eddng xung quanh. C\u00f3 ba ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh trong t\u1ea3n nhi\u1ec7t: d\u1eabn nhi\u1ec7t, \u0111\u1ed1i l\u01b0u v\u00e0 b\u1ee9c x\u1ea1.<\/p>\n<ul>\n<li><strong>D\u1eabn nhi\u1ec7t:<\/strong> L\u00e0 qu\u00e1 tr\u00ecnh chuy\u1ec3n nhi\u1ec7t t\u1eeb m\u1ed9t v\u1eadt c\u00f3 nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n sang v\u1eadt c\u00f3 nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n.<\/li>\n<li><strong>\u0110\u1ed1i l\u01b0u:<\/strong> X\u1ea3y ra khi ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed di chuy\u1ec3n xung quanh \u0111\u1ec3 l\u1ea5y nhi\u1ec7t t\u1eeb v\u1eadt n\u00f3ng v\u00e0 chuy\u1ec3n n\u00f3 ra ngo\u00e0i.<\/li>\n<li><strong>B\u1ee9c x\u1ea1:<\/strong> L\u00e0 qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t d\u01b0\u1edbi d\u1ea1ng s\u00f3ng \u0111i\u1ec7n t\u1eeb.<\/li>\n<\/ul>\n<h2>Thi\u1ebft k\u1ebf t\u1ea3n nhi\u1ec7t<\/h2>\n<p>Link ki\u1ec7n t\u1ea3n nhi\u1ec7t \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 t\u1eadn d\u1ee5ng t\u1ed1i \u0111a c\u00e1c nguy\u00ean l\u00fd truy\u1ec1n nhi\u1ec7t tr\u00ean. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p t\u1ea3n nhi\u1ec7t ph\u1ed5 bi\u1ebfn:<\/p>\n<ol>\n<li><strong>T\u1ea3n nhi\u1ec7t b\u1eb1ng qu\u1ea1t:<\/strong> S\u1eed d\u1ee5ng qu\u1ea1t \u0111\u1ec3 l\u01b0u th\u00f4ng kh\u00f4ng kh\u00ed qua c\u00e1c b\u1ed9 ph\u1eadn l\u00e0m m\u00e1t.<\/li>\n<li><strong>T\u1ea3n nhi\u1ec7t b\u1eb1ng t\u1ea5m nh\u00f4m:<\/strong> C\u00e1c thanh nh\u00f4m ho\u1eb7c \u0111\u1ed3ng v\u1edbi di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t l\u1edbn \u0111\u1ec3 t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3 h\u01a1n qua \u0111\u1ed1i l\u01b0u v\u00e0 b\u1ee9c x\u1ea1.<\/li>\n<li><strong>T\u1ea3n nhi\u1ec7t b\u1eb1ng \u1ed1ng d\u1eabn nhi\u1ec7t:<\/strong> S\u1eed d\u1ee5ng c\u00e1c \u1ed1ng ch\u1ee9a ch\u1ea5t l\u1ecfng c\u00f3 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 v\u00e0 chuy\u1ec3n giao nhi\u1ec7t r\u1ea5t t\u1ed1t.<\/li>\n<li><strong>T\u1ea3n nhi\u1ec7t b\u1eb1ng ch\u1ea5t l\u1ecfng:<\/strong> S\u1eed d\u1ee5ng ch\u1ea5t l\u1ecfng \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 l\u00e0m m\u00e1t c\u00e1c linh ki\u1ec7n qua h\u1ec7 th\u1ed1ng \u1ed1ng v\u00e0 b\u01a1m.<\/li>\n<\/ol>\n<h2>T\u00ednh to\u00e1n t\u1ea3n nhi\u1ec7t<\/h2>\n<p>Trong thi\u1ebft k\u1ebf t\u1ea3n nhi\u1ec7t, vi\u1ec7c t\u00ednh to\u00e1n l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 bi\u1ebft \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 linh ki\u1ec7n c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng.<\/p>\n<p>M\u1ed9t c\u00f4ng th\u1ee9c ph\u1ed5 bi\u1ebfn \u0111\u1ec3 t\u00ednh to\u00e1n nhi\u1ec7t \u0111\u1ed9 l\u00e0:<\/p>\n<p>Q = h * A * \u0394T<\/p>\n<p>Trong \u0111\u00f3:<\/p>\n<ul>\n<li>Q l\u00e0 c\u00f4ng su\u1ea5t nhi\u1ec7t t\u1ecfa ra (W)<\/li>\n<li>h 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 t\u1ea3n nhi\u1ec7t (m<sup>2<\/sup>)<\/li>\n<li>\u0394T l\u00e0 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 gi\u1eefa b\u1ec1 m\u1eb7t t\u1ea3n nhi\u1ec7t v\u00e0 m\u00f4i tr\u01b0\u1eddng (K)<\/li>\n<\/ul>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>Vi\u1ec7c hi\u1ec3u r\u00f5 nguy\u00ean l\u00fd v\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u1ea3n nhi\u1ec7t l\u00e0 c\u01a1 s\u1edf quan tr\u1ecdng \u0111\u1ec3 thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n t\u1eed ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 l\u00e2u b\u1ec1n. T\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3 kh\u00f4ng ch\u1ec9 gi\u00fap gia t\u0103ng tu\u1ed5i th\u1ecd c\u1ee7a linh ki\u1ec7n, m\u00e0 c\u00f2n \u0111\u1ea3m b\u1ea3o r\u1eb1ng h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng v\u1edbi hi\u1ec7u su\u1ea5t cao nh\u1ea5t.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u1ea3n nhi\u1ec7t: L\u00e0m m\u00e1t \u0111i\u1ec7n t\u1eed v\u00e0 thi\u1ebft k\u1ebf, t\u00ecm hi\u1ec3u c\u00e1ch t\u1ea3n nhi\u1ec7t c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t hi\u1ec7u qu\u1ea3.<\/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>T\u1ea3n 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