{"id":700680,"date":"2024-10-19T15:44:02","date_gmt":"2024-10-19T14:44:02","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=700680"},"modified":"2024-10-19T15:44:02","modified_gmt":"2024-10-19T14:44:02","slug":"qua-trinh-truyen-nhiet-trong-dien-cuc-xop","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/qua-trinh-truyen-nhiet-trong-dien-cuc-xop\/","title":{"rendered":"Qu\u00e1 Tr\u00ecnh Truy\u1ec1n Nhi\u1ec7t Trong \u0110i\u1ec7n C\u1ef1c X\u1ed1p"},"content":{"rendered":"<p class=\"sidekick\">Qu\u00e1 Tr\u00ecnh Truy\u1ec1n Nhi\u1ec7t Trong \u0110i\u1ec7n C\u1ef1c X\u1ed1p gi\u1ea3i th\u00edch nguy\u00ean l\u00fd, \u1ee9ng d\u1ee5ng v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t truy\u1ec1n nhi\u1ec7t trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n c\u1ef1c d\u00f9ng trong c\u00f4ng nghi\u1ec7p.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/qua_trinh_truyen_nhiet_trong_dien_cuc_xop.png\" alt=\"Qu\u00e1 Tr\u00ecnh Truy\u1ec1n Nhi\u1ec7t Trong \u0110i\u1ec7n C\u1ef1c X\u1ed1p\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>Qu\u00e1 Tr\u00ecnh Truy\u1ec1n Nhi\u1ec7t Trong \u0110i\u1ec7n C\u1ef1c X\u1ed1p<\/h2>\n<p>\u0110i\u1ec7n c\u1ef1c x\u1ed1p l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 cao nh\u01b0 pin nhi\u00ean li\u1ec7u, pin n\u0103ng l\u01b0\u1ee3ng v\u00e0 c\u00e1c thi\u1ebft b\u1ecb l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng kh\u00e1c. M\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb n\u00e0y l\u00e0 qu\u1ea3n l\u00fd nhi\u1ec7t hi\u1ec7u qu\u1ea3, t\u1ee9c l\u00e0 kh\u1ea3 n\u0103ng truy\u1ec1n nhi\u1ec7t trong \u0111i\u1ec7n c\u1ef1c x\u1ed1p.<\/p>\n<h2>C\u1ea5u Tr\u00fac V\u00e0 Ch\u1ee9c N\u0103ng C\u1ee7a \u0110i\u1ec7n C\u1ef1c X\u1ed1p<\/h2>\n<p>\u0110i\u1ec7n c\u1ef1c x\u1ed1p \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o t\u1eeb c\u00e1c v\u1eadt li\u1ec7u c\u00f3 c\u1ea5u tr\u00fac t\u1ed5 ong, ch\u1ee9a nhi\u1ec1u l\u1ed7 r\u1ed7ng nh\u1ecf li ti. C\u00e1c l\u1ed7 r\u1ed7ng n\u00e0y c\u00f3 ch\u1ee9c n\u0103ng t\u1ed1i \u01b0u h\u00f3a di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac v\u00e0 t\u0103ng kh\u1ea3 n\u0103ng trao \u0111\u1ed5i ion. Tuy nhi\u00ean, ch\u00fang c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng truy\u1ec1n nhi\u1ec7t trong \u0111i\u1ec7n c\u1ef1c.<\/p>\n<ul>\n<li><b>T\u0103ng Di\u1ec7n T\u00edch B\u1ec1 M\u1eb7t:<\/b> Gi\u00fap c\u1ea3i thi\u1ec7n ph\u1ea3n \u1ee9ng \u0111i\u1ec7n ho\u00e1 h\u1ecdc.<\/li>\n<li><b>Gi\u1ea3m Tr\u1ecdng L\u01b0\u1ee3ng:<\/b> Gi\u00fap thi\u1ebft b\u1ecb nh\u1eb9 h\u01a1n v\u00e0 d\u1ec5 v\u1eadn chuy\u1ec3n.<\/li>\n<\/ul>\n<h2>Qu\u00e1 Tr\u00ecnh Truy\u1ec1n Nhi\u1ec7t<\/h2>\n<p>Truy\u1ec1n nhi\u1ec7t trong \u0111i\u1ec7n c\u1ef1c x\u1ed1p bao g\u1ed3m ba qu\u00e1 tr\u00ecnh ch\u00ednh:<\/p>\n<ol>\n<li><b>D\u1eabn Nhi\u1ec7t:<\/b> X\u1ea3y ra qua v\u1eadt li\u1ec7u r\u1eafn t\u1ea1o n\u00ean c\u1ea5u tr\u00fac c\u1ee7a \u0111i\u1ec7n c\u1ef1c.<\/li>\n<li><b>\u0110\u1ed1i L\u01b0u:<\/b> X\u1ea3y ra trong ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed ch\u1ee9a trong c\u00e1c l\u1ed7 r\u1ed7ng.<\/li>\n<li><b>Ph\u00f3ng X\u1ea1:<\/b> \u00cdt quan tr\u1ecdng h\u01a1n nh\u01b0ng v\u1eabn c\u00f3 \u1ea3nh h\u01b0\u1edfng t\u00f9y thu\u1ed9c v\u00e0o \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c.<\/li>\n<\/ol>\n<h2>Ph\u01b0\u01a1ng Tr\u00ecnh D\u1eabn Nhi\u1ec7t<\/h2>\n<p>Qu\u00e1 tr\u00ecnh d\u1eabn nhi\u1ec7t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 b\u1eb1ng ph\u01b0\u01a1ng tr\u00ecnh Fourier:<\/p>\n<p>\\[<br \/>\nq = -k  \\cdot \\nabla T<br \/>\n\\]\n<p>Trong \u0111\u00f3:<\/p>\n<ul>\n<li><b>q:<\/b> Nhi\u1ec7t l\u01b0\u1ee3ng d\u1eabn \u0111i qua m\u1ed9t \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch (W\/m<sup>2<\/sup>).<\/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>\\nabla T:<\/b> \u0110\u1ed9 d\u1ed1c nhi\u1ec7t \u0111\u1ed9 (K\/m).<\/li>\n<\/ul>\n<p>\u0110\u1ed1i v\u1edbi \u0111i\u1ec7n c\u1ef1c x\u1ed1p, h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t k l\u00e0 m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng trung b\u00ecnh ph\u1ee5 thu\u1ed9c v\u00e0o c\u1ea3 v\u1eadt li\u1ec7u r\u1eafn v\u00e0 kh\u00f4ng kh\u00ed ho\u1eb7c ch\u1ea5t l\u1ecfng ch\u1ee9a trong c\u00e1c l\u1ed7 r\u1ed7ng.<\/p>\n<h2>Y\u1ebfu T\u1ed1 \u1ea2nh H\u01b0\u1edfng \u0110\u1ebfn Truy\u1ec1n Nhi\u1ec7t<\/h2>\n<p>M\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t trong \u0111i\u1ec7n c\u1ef1c x\u1ed1p bao g\u1ed3m:<\/p>\n<ul>\n<li><b>\u0110\u1ed9 X\u1ed1p:<\/b> \u0110\u1ed9 x\u1ed1p c\u00e0ng cao th\u00ec kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t c\u00e0ng th\u1ea5p do s\u1ef1 gi\u00e1n \u0111o\u1ea1n c\u1ee7a v\u1eadt li\u1ec7u r\u1eafn.<\/li>\n<li><b>K\u00edch Th\u01b0\u1edbc L\u1ed7 R\u1ed7ng:<\/b> L\u1ed7 r\u1ed7ng nh\u1ecf h\u01a1n gi\u00fap t\u0103ng di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac, nh\u01b0ng c\u0169ng c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng truy\u1ec1n nhi\u1ec7t.<\/li>\n<li><b>Ch\u1ea5t Li\u1ec7u:<\/b> Ch\u1ecdn \u0111\u00fang lo\u1ea1i v\u1eadt li\u1ec7u c\u00f3 h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t cao s\u1ebd t\u0103ng hi\u1ec7u qu\u1ea3 truy\u1ec1n nhi\u1ec7t.<\/li>\n<li><b>Nhi\u1ec7t \u0110\u1ed9 L\u00e0m Vi\u1ec7c:<\/b> Nhi\u1ec7t \u0111\u1ed9 \u1ea3nh h\u01b0\u1edfng t\u1edbi h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t c\u1ee7a c\u1ea3 v\u1eadt li\u1ec7u r\u1eafn v\u00e0 ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed b\u00ean trong l\u1ed7 r\u1ed7ng.<\/li>\n<\/ul>\n<h2>\u1ee8ng D\u1ee5ng V\u00e0 Nghi\u00ean C\u1ee9u T\u01b0\u01a1ng Lai<\/h2>\n<p>Ng\u00e0y nay, nghi\u00ean c\u1ee9u v\u1ec1 truy\u1ec1n nhi\u1ec7t trong \u0111i\u1ec7n c\u1ef1c x\u1ed1p t\u1eadp trung v\u00e0o vi\u1ec7c c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng, ch\u1eb3ng h\u1ea1n nh\u01b0 pin lithium-ion v\u00e0 c\u00e1c lo\u1ea1i pin nhi\u00ean li\u1ec7u kh\u00e1c. C\u00e1c nghi\u00ean c\u1ee9u c\u0169ng \u0111ang t\u00ecm ki\u1ebfm c\u00e1c v\u1eadt li\u1ec7u m\u1edbi v\u1edbi h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t cao h\u01a1n v\u00e0 \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc t\u1ed1t h\u01a1n.<\/p>\n<p>T\u00f3m l\u1ea1i, qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t trong \u0111i\u1ec7n c\u1ef1c x\u1ed1p l\u00e0 m\u1ed9t l\u0129nh v\u1ef1c quan tr\u1ecdng trong thermal engineering, \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb d\u1ef1a tr\u00ean \u0111i\u1ec7n c\u1ef1c x\u1ed1p. N\u1eafm v\u1eefng c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng v\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u1ed1i \u01b0u ho\u00e1 qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t s\u1ebd \u0111\u00f3ng g\u00f3p kh\u00f4ng nh\u1ecf v\u00e0o s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c c\u00f4ng ngh\u1ec7 n\u0103ng l\u01b0\u1ee3ng s\u1ea1ch v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Qu\u00e1 Tr\u00ecnh Truy\u1ec1n Nhi\u1ec7t Trong \u0110i\u1ec7n C\u1ef1c X\u1ed1p gi\u1ea3i th\u00edch nguy\u00ean l\u00fd, \u1ee9ng d\u1ee5ng v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t truy\u1ec1n nhi\u1ec7t trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n c\u1ef1c d\u00f9ng trong c\u00f4ng nghi\u1ec7p.<\/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 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