{"id":700927,"date":"2024-08-30T22:45:34","date_gmt":"2024-08-30T21:45:34","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=700927"},"modified":"2024-08-30T22:45:34","modified_gmt":"2024-08-30T21:45:34","slug":"quan-ly-nhiet-trong-chat-ban-dan","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/quan-ly-nhiet-trong-chat-ban-dan\/","title":{"rendered":"Qu\u1ea3n l\u00fd nhi\u1ec7t trong ch\u1ea5t b\u00e1n d\u1eabn"},"content":{"rendered":"<p class=\"sidekick\">Qu\u1ea3n l\u00fd nhi\u1ec7t trong ch\u1ea5t b\u00e1n d\u1eabn: gi\u1ea3i ph\u00e1p t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3, t\u0103ng tu\u1ed5i th\u1ecd thi\u1ebft b\u1ecb, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t cao cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 hi\u1ec7n \u0111\u1ea1i.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/quan_ly_nhiet_trong_chat_ban_dan.png\" alt=\"Qu\u1ea3n l\u00fd nhi\u1ec7t trong ch\u1ea5t b\u00e1n d\u1eabn\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>Qu\u1ea3n L\u00fd Nhi\u1ec7t Trong Ch\u1ea5t B\u00e1n D\u1eabn<\/h2>\n<p>Ch\u1ea5t b\u00e1n d\u1eabn l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a r\u1ea5t nhi\u1ec1u thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed hi\u1ec7n \u0111\u1ea1i, t\u1eeb \u0111i\u1ec7n tho\u1ea1i th\u00f4ng minh, m\u00e1y t\u00ednh, \u0111\u1ebfn c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n t\u1eed ph\u1ee9c t\u1ea1p kh\u00e1c. Vi\u1ec7c qu\u1ea3n l\u00fd nhi\u1ec7t trong ch\u1ea5t b\u00e1n d\u1eabn l\u00e0 m\u1ed9t th\u00e1ch th\u1ee9c quan tr\u1ecdng v\u00ec nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao c\u00f3 th\u1ec3 g\u00e2y h\u1ecfng h\u00f3c v\u00e0 gi\u1ea3m hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb.<\/p>\n<h2>T\u1ea1i Sao Qu\u1ea3n L\u00fd Nhi\u1ec7t Quan Tr\u1ecdng?<\/h2>\n<p>Khi c\u00e1c thi\u1ebft b\u1ecb b\u00e1n d\u1eabn ho\u1ea1t \u0111\u1ed9ng, ch\u00fang sinh nhi\u1ec7t. Nhi\u1ec7t \u0111\u1ed9 cao c\u00f3 th\u1ec3 g\u00e2y ra c\u00e1c v\u1ea5n \u0111\u1ec1 sau:<\/p>\n<ul>\n<li><strong>H\u1ecfng h\u00f3c v\u1eadt l\u00fd:<\/strong> Nhi\u1ec7t \u0111\u1ed9 cao c\u00f3 th\u1ec3 l\u00e0m ch\u1ea3y ho\u1eb7c l\u00e0m h\u1ecfng c\u00e1c v\u1eadt li\u1ec7u b\u00e1n d\u1eabn.<\/li>\n<li><strong>Gi\u1ea3m hi\u1ec7u su\u1ea5t:<\/strong> Hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c linh ki\u1ec7n b\u00e1n d\u1eabn gi\u1ea3m khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng, l\u00e0m gi\u1ea3m t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd v\u00e0 hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng.<\/li>\n<li><strong>H\u1ecfng h\u00f3c nhi\u1ec7t:<\/strong> Nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 xu\u1ed1ng c\u1ea5p v\u00e0 h\u1ecfng h\u00f3c c\u1ee7a c\u00e1c m\u1ed1i n\u1ed1i v\u00e0 k\u1ebft n\u1ed1i b\u00e1n d\u1eabn.<\/li>\n<\/ul>\n<h2>Ph\u01b0\u01a1ng Ph\u00e1p Qu\u1ea3n L\u00fd Nhi\u1ec7t<\/h2>\n<p>C\u00f3 nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 qu\u1ea3n l\u00fd nhi\u1ec7t trong ch\u1ea5t b\u00e1n d\u1eabn, bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>T\u1ea3n nhi\u1ec7t th\u1ee5 \u0111\u1ed9ng:<\/strong> S\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u c\u00f3 kh\u1ea3 n\u0103ng t\u1ea3n nhi\u1ec7t cao nh\u01b0 \u0111\u1ed3ng v\u00e0 nh\u00f4m \u0111\u1ec3 chuy\u1ec3n nhi\u1ec7t ra ngo\u00e0i.<\/li>\n<li><strong>Qu\u1ea1t l\u00e0m m\u00e1t:<\/strong> S\u1eed d\u1ee5ng qu\u1ea1t \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng l\u01b0u th\u00f4ng kh\u00f4ng kh\u00ed, gi\u00fap chuy\u1ec3n nhi\u1ec7t ra kh\u1ecfi linh ki\u1ec7n.<\/li>\n<li><strong>L\u00e0m m\u00e1t b\u1eb1ng ch\u1ea5t l\u1ecfng:<\/strong> S\u1eed d\u1ee5ng c\u00e1c h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t b\u1eb1ng ch\u1ea5t l\u1ecfng \u0111\u1ec3 chuy\u1ec3n nhi\u1ec7t ra ngo\u00e0i nhanh ch\u00f3ng v\u00e0 hi\u1ec7u qu\u1ea3.<\/li>\n<li><strong>V\u1eadt li\u1ec7u thay \u0111\u1ed5i pha (PCM):<\/strong> S\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u c\u00f3 kh\u1ea3 n\u0103ng chuy\u1ec3n t\u1eeb d\u1ea1ng r\u1eafn sang d\u1ea1ng l\u1ecfng khi h\u1ea5p th\u1ee5 m\u1ed9t l\u01b0\u1ee3ng nhi\u1ec7t l\u1edbn, gi\u00fap duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh cho linh ki\u1ec7n.<\/li>\n<\/ul>\n<h2>C\u00e1c C\u00f4ng Th\u1ee9c Li\u00ean Quan<\/h2>\n<p>Qu\u1ea3n l\u00fd nhi\u1ec7t trong ch\u1ea5t b\u00e1n d\u1eabn li\u00ean quan \u0111\u1ebfn m\u1ed9t s\u1ed1 c\u00f4ng th\u1ee9c c\u01a1 b\u1ea3n trong nhi\u1ec7t h\u1ecdc, ch\u1eb3ng h\u1ea1n nh\u01b0:<\/p>\n<ul>\n<li><strong>Ph\u01b0\u01a1ng tr\u00ecnh Fourier v\u1ec1 d\u1eabn nhi\u1ec7t:<\/strong><\/li>\n<p>    \\( q = -k \\nabla T \\)<\/p>\n<p>Trong \u0111\u00f3, <em>q<\/em> l\u00e0 m\u1eadt \u0111\u1ed9 d\u00f2ng nhi\u1ec7t, <em>k<\/em> l\u00e0 h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t, v\u00e0 <em>T<\/em> l\u00e0 nhi\u1ec7t \u0111\u1ed9.<\/p>\n<li><strong>Ph\u01b0\u01a1ng tr\u00ecnh b\u1ea3o to\u00e0n n\u0103ng l\u01b0\u1ee3ng:<\/strong><\/li>\n<p>    \\(\\frac{dQ}{dt} = C \\frac{dT}{dt}\\)<\/p>\n<p>Trong \u0111\u00f3, <em>dQ<\/em> l\u00e0 n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t, <em>C<\/em> l\u00e0 nhi\u1ec7t dung, v\u00e0 <em>dT<\/em> l\u00e0 \u0111\u1ed9 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 theo th\u1eddi gian <em>dt<\/em>.<\/p>\n<\/ul>\n<h2>K\u1ebft Lu\u1eadn<\/h2>\n<p>Qu\u1ea3n l\u00fd nhi\u1ec7t trong ch\u1ea5t b\u00e1n d\u1eabn l\u00e0 m\u1ed9t l\u0129nh v\u1ef1c quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed. B\u1eb1ng vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p qu\u1ea3n l\u00fd nhi\u1ec7t hi\u1ec7n \u0111\u1ea1i v\u00e0 \u00e1p d\u1ee5ng c\u00e1c c\u00f4ng th\u1ee9c nhi\u1ec7t h\u1ecdc, ch\u00fang ta c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c linh ki\u1ec7n b\u00e1n d\u1eabn v\u00e0 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t c\u1ee7a ch\u00fang.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Qu\u1ea3n l\u00fd nhi\u1ec7t trong ch\u1ea5t b\u00e1n d\u1eabn: gi\u1ea3i ph\u00e1p t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3, t\u0103ng tu\u1ed5i th\u1ecd thi\u1ebft b\u1ecb, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t cao cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 hi\u1ec7n \u0111\u1ea1i.<\/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 - 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