{"id":681857,"date":"2024-09-12T11:48:03","date_gmt":"2024-09-12T10:48:03","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=681857"},"modified":"2024-09-12T11:48:03","modified_gmt":"2024-09-12T10:48:03","slug":"composit-nhua-dan-nhiet","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/composit-nhua-dan-nhiet\/","title":{"rendered":"Composit nh\u1ef1a d\u1eabn nhi\u1ec7t"},"content":{"rendered":"<p class=\"sidekick\">Composit nh\u1ef1a d\u1eabn nhi\u1ec7t: Gi\u1ea3i th\u00edch c\u01a1 b\u1ea3n v\u1ec1 \u0111\u1eb7c t\u00ednh, c\u1ea5u tr\u00fac v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a c\u00e1c lo\u1ea1i composit nh\u1ef1a c\u00f3 kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t trong ng\u00e0nh k\u1ef9 thu\u1eadt nhi\u1ec7t.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/composit_nhua_dan_nhiet.png\" alt=\"Composit nh\u1ef1a d\u1eabn nhi\u1ec7t\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>Composit Nh\u1ef1a D\u1eabn Nhi\u1ec7t<\/h2>\n<p>Composit nh\u1ef1a d\u1eabn nhi\u1ec7t l\u00e0 m\u1ed9t trong nh\u1eefng v\u1eadt li\u1ec7u ti\u00ean ti\u1ebfn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ng\u00e0y c\u00e0ng nhi\u1ec1u trong c\u00e1c \u1ee9ng d\u1ee5ng k\u1ef9 thu\u1eadt v\u00e0 c\u00f4ng nghi\u1ec7p. Kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t cao c\u1ee7a composit nh\u1ef1a gi\u00fap ch\u00fang tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng trong c\u00e1c \u1ee9ng d\u1ee5ng c\u1ea7n t\u1ea3n nhi\u1ec7t hi\u1ec7u qu\u1ea3.<\/p>\n<h2>\u0110\u1eb7c \u0110i\u1ec3m v\u00e0 \u1ee8ng D\u1ee5ng<\/h2>\n<p>Composit nh\u1ef1a d\u1eabn nhi\u1ec7t l\u00e0 s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa nh\u1ef1a n\u1ec1n v\u00e0 c\u00e1c ch\u1ea5t ph\u1ee5 gia d\u1eabn nhi\u1ec7t nh\u01b0 b\u1ed9t nh\u00f4m (Al), b\u1ed9t \u0111\u1ed3ng (Cu), ho\u1eb7c s\u1ee3i th\u1ee7y tinh. C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh bao g\u1ed3m:<\/p>\n<ul>\n<li><b>Kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t cao:<\/b> So v\u1edbi nh\u1ef1a th\u00f4ng th\u01b0\u1eddng, composit nh\u1ef1a d\u1eabn nhi\u1ec7t c\u00f3 kh\u1ea3 n\u0103ng truy\u1ec1n nhi\u1ec7t cao h\u01a1n, gi\u00fap t\u0103ng hi\u1ec7u su\u1ea5t t\u1ea3n nhi\u1ec7t.<\/li>\n<li><b>Tr\u1ecdng l\u01b0\u1ee3ng nh\u1eb9:<\/b> M\u1eb7c d\u00f9 \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p v\u1edbi c\u00e1c ch\u1ea5t d\u1eabn nhi\u1ec7t, composit nh\u1ef1a v\u1eabn kh\u00e1 nh\u1eb9 so v\u1edbi c\u00e1c v\u1eadt li\u1ec7u kim lo\u1ea1i.<\/li>\n<li><b>\u0110\u1ed9 b\u1ec1n cao:<\/b> Ch\u00fang c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c v\u00e0 t\u00e1c \u0111\u1ed9ng m\u1ea1nh m\u00e0 kh\u00f4ng b\u1ecb bi\u1ebfn d\u1ea1ng.<\/li>\n<li><b>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n:<\/b> Nh\u1edd t\u00ednh ch\u1ea5t c\u1ee7a nh\u1ef1a n\u1ec1n, composit nh\u1ef1a c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i s\u1ef1 \u0103n m\u00f2n t\u1eeb m\u00f4i tr\u01b0\u1eddng.<\/li>\n<\/ul>\n<p>Nh\u1eefng \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn c\u1ee7a composit nh\u1ef1a d\u1eabn nhi\u1ec7t bao g\u1ed3m:<\/p>\n<ol>\n<li><b>T\u1ea3n nhi\u1ec7t cho thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed:<\/b> S\u1eed d\u1ee5ng trong c\u00e1c b\u1ed9 ph\u1eadn t\u1ea3n nhi\u1ec7t c\u1ee7a m\u00e1y t\u00ednh, \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng, v\u00e0 c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed kh\u00e1c.<\/li>\n<li><b>Ng\u00e0nh c\u00f4ng nghi\u1ec7p \u00f4 t\u00f4:<\/b> S\u1eed d\u1ee5ng trong c\u00e1c b\u1ed9 ph\u1eadn \u0111\u1ed9ng c\u01a1, h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t, v\u00e0 c\u00e1c linh ki\u1ec7n kh\u00e1c c\u1ea7n kh\u1ea3 n\u0103ng t\u1ea3n nhi\u1ec7t t\u1ed1t.<\/li>\n<li><b>Ng\u00e0nh c\u00f4ng ngh\u1ec7 n\u0103ng l\u01b0\u1ee3ng:<\/b> S\u1eed d\u1ee5ng trong c\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a pin, c\u00e1c t\u1ea5m n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi, v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng kh\u00e1c.<\/li>\n<\/ol>\n<h2>V\u00ed D\u1ee5 S\u1eed D\u1ee5ng C\u00f4ng Th\u1ee9c To\u00e1n H\u1ecdc<\/h2>\n<p>\u0110\u1ec3 t\u00ednh to\u00e1n kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t c\u1ee7a composit nh\u1ef1a, ch\u00fang ta c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u1ecbnh lu\u1eadt Fourier v\u1ec1 d\u1eabn nhi\u1ec7t. C\u00f4ng th\u1ee9c c\u01a1 b\u1ea3n c\u1ee7a \u0111\u1ecbnh lu\u1eadt Fourier l\u00e0:<\/p>\n<p>\\[<br \/>\nq = -k \\frac{dT}{dx}<br \/>\n\\]\n<p>\u1ede \u0111\u00e2y:<\/p>\n<ul>\n<li><b>q:<\/b> D\u00f2ng nhi\u1ec7t truy\u1ec1n qua v\u1eadt li\u1ec7u (W\/m\u00b2).<\/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>dT:<\/b> \u0110\u1ed9 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 (K).<\/li>\n<li><b>dx:<\/b> \u0110\u1ed9 d\u00e0y c\u1ee7a v\u1eadt li\u1ec7u (m).<\/li>\n<\/ul>\n<h2>K\u1ebft Lu\u1eadn<\/h2>\n<p>Composit nh\u1ef1a d\u1eabn nhi\u1ec7t l\u00e0 m\u1ed9t trong nh\u1eefng v\u1eadt li\u1ec7u k\u1ef9 thu\u1eadt c\u00f3 ti\u1ec1m n\u0103ng l\u1edbn trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau. V\u1edbi kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t cao, tr\u1ecdng l\u01b0\u1ee3ng nh\u1eb9, v\u00e0 \u0111\u1ed9 b\u1ec1n t\u1ed1t, ch\u00fang \u0111ang d\u1ea7n thay th\u1ebf c\u00e1c v\u1eadt li\u1ec7u truy\u1ec1n th\u1ed1ng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p v\u00e0 c\u00f4ng ngh\u1ec7. Hi\u1ec3u r\u00f5 v\u1ec1 c\u00e1c \u0111\u1eb7c t\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a composit nh\u1ef1a d\u1eabn nhi\u1ec7t s\u1ebd gi\u00fap ch\u00fang ta \u00e1p d\u1ee5ng ch\u00fang m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 v\u00e0 s\u00e1ng t\u1ea1o h\u01a1n.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Composit nh\u1ef1a d\u1eabn nhi\u1ec7t: Gi\u1ea3i th\u00edch c\u01a1 b\u1ea3n v\u1ec1 \u0111\u1eb7c t\u00ednh, c\u1ea5u tr\u00fac v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a c\u00e1c lo\u1ea1i composit nh\u1ef1a c\u00f3 kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t trong ng\u00e0nh k\u1ef9 thu\u1eadt nhi\u1ec7t.<\/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>Composit nh\u1ef1a d\u1eabn 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