{"id":708942,"date":"2024-08-02T05:08:25","date_gmt":"2024-08-02T04:08:25","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=708942"},"modified":"2024-08-02T05:08:25","modified_gmt":"2024-08-02T04:08:25","slug":"vat-lieu-dan-nhiet-thap","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/vat-lieu-dan-nhiet-thap\/","title":{"rendered":"V\u1eadt li\u1ec7u d\u1eabn nhi\u1ec7t th\u1ea5p"},"content":{"rendered":"<p class=\"sidekick\">V\u1eadt li\u1ec7u d\u1eabn nhi\u1ec7t th\u1ea5p gi\u00fap h\u1ea1n ch\u1ebf s\u1ef1 truy\u1ec1n nhi\u1ec7t, n\u00e2ng cao hi\u1ec7u qu\u1ea3 c\u00e1ch nhi\u1ec7t trong c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng v\u00e0 thi\u1ebft b\u1ecb c\u00f4ng nghi\u1ec7p.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/vat_lieu_dan_nhiet_thap.png\" alt=\"V\u1eadt li\u1ec7u d\u1eabn nhi\u1ec7t th\u1ea5p\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>V\u1eadt Li\u1ec7u D\u1eabn Nhi\u1ec7t Th\u1ea5p<\/h2>\n<p>Trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t, v\u1eadt li\u1ec7u d\u1eabn nhi\u1ec7t th\u1ea5p \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c c\u00e1ch nhi\u1ec7t v\u00e0 duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh trong nhi\u1ec1u \u1ee9ng d\u1ee5ng. Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y c\u00f3 h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t r\u1ea5t th\u1ea5p, gi\u00fap ng\u0103n nhi\u1ec7t \u0111\u1ed9 truy\u1ec1n qua ch\u00fang m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. Ch\u00fang ta c\u00f9ng t\u00ecm hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 v\u1eadt li\u1ec7u n\u00e0y v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang.<\/p>\n<h2>\u0110\u1ecbnh ngh\u0129a v\u00e0 \u0110\u1eb7c \u0111i\u1ec3m<\/h2>\n<p>V\u1eadt li\u1ec7u d\u1eabn nhi\u1ec7t th\u1ea5p l\u00e0 c\u00e1c ch\u1ea5t li\u1ec7u m\u00e0 h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t (\\(k\\)) c\u1ee7a ch\u00fang r\u1ea5t nh\u1ecf. H\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t l\u00e0 m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng \u0111o l\u01b0\u1eddng kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u. V\u1eadt li\u1ec7u c\u00f3 h\u1ec7 s\u1ed1 k c\u00e0ng nh\u1ecf th\u00ec kh\u1ea3 n\u0103ng ng\u0103n c\u1ea3n d\u00f2ng nhi\u1ec7t \u0111i qua c\u00e0ng t\u1ed1t.<\/p>\n<h2>C\u00e1c V\u1eadt Li\u1ec7u Ph\u1ed5 Bi\u1ebfn<\/h2>\n<p><u1><\/p>\n<li><b>Foam Polystyrene<\/b>:<\/li>\n<p>Foam polystyrene (hay c\u00f2n g\u1ecdi l\u00e0 x\u1ed1p) th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1ch nhi\u1ec7t x\u00e2y d\u1ef1ng v\u00e0 \u0111\u00f3ng g\u00f3i do kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t t\u1ed1t v\u00e0 gi\u00e1 th\u00e0nh r\u1ebb.<\/p>\n<li><b>Fiberglass<\/b>:<\/li>\n<p>V\u1eadt li\u1ec7u n\u00e0y \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb s\u1ee3i th\u1ee7y tinh, r\u1ea5t ph\u1ed5 bi\u1ebfn trong c\u00e1ch nhi\u1ec7t c\u1ee7a c\u00e1c t\u00f2a nh\u00e0 v\u00e0 trong ng\u00e0nh c\u00f4ng nghi\u1ec7p \u00f4 t\u00f4.<\/p>\n<li><b>Aerogel<\/b>:<\/li>\n<p>Aerogel l\u00e0 v\u1eadt li\u1ec7u si\u00eau nh\u1eb9 v\u1edbi c\u1ea5u tr\u00fac m\u1ea1ng nano, c\u00f3 h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t r\u1ea5t th\u1ea5p, l\u00fd t\u01b0\u1edfng cho c\u00e1ch nhi\u1ec7t trong m\u00f4i tr\u01b0\u1eddng kh\u00f4ng gian v\u00e0 \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p cao c\u1ea5p.<\/p>\n<li><b>Polyurethane Foam<\/b>:<\/li>\n<p>S\u1ea3n ph\u1ea9m n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 c\u00e1ch nhi\u1ec7t t\u01b0\u1eddng, tr\u1ea7n nh\u00e0 v\u00e0 c\u00e1c thi\u1ebft b\u1ecb l\u1ea1nh. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ng\u0103n nhi\u1ec7t r\u1ea5t t\u1ed1t v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng trong c\u00e1c k\u1ebft c\u1ea5u x\u00e2y d\u1ef1ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n<p><\/u1><\/p>\n<h2>\u1ee8ng D\u1ee5ng Th\u1ef1c Ti\u1ec5n<\/h2>\n<p>V\u1eadt li\u1ec7u d\u1eabn nhi\u1ec7t th\u1ea5p \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p v\u00e0 trong \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y:<\/p>\n<p><u1><\/p>\n<li><b>X\u00e2y d\u1ef1ng:<\/b>\n<p>V\u1eadt li\u1ec7u n\u00e0y gi\u00fap gi\u1ea3m l\u01b0\u1ee3ng n\u0103ng l\u01b0\u1ee3ng ti\u00eau th\u1ee5 trong h\u1ec7 th\u1ed1ng s\u01b0\u1edfi v\u00e0 l\u00e0m m\u00e1t, \u0111\u1ed3ng th\u1eddi c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng c\u1ee7a c\u00e1c t\u00f2a nh\u00e0.<\/p>\n<\/li>\n<li><b>C\u00f4ng nghi\u1ec7p \u0110i\u1ec7n L\u1ea1nh:<\/b>\n<p>C\u00e1ch nhi\u1ec7t t\u1ed1t gi\u00fap gi\u1ea3m hao t\u1ed1n n\u0103ng l\u01b0\u1ee3ng cho c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 t\u1ee7 l\u1ea1nh, m\u00e1y \u0111i\u1ec1u h\u00f2a nhi\u1ec7t \u0111\u1ed9.<\/p>\n<\/li>\n<li><b>C\u00f4ng ngh\u1ec7 Kh\u00f4ng Gian:<\/b>\n<p>V\u1eadt li\u1ec7u nh\u01b0 aerogel \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c thi\u1ebft b\u1ecb kh\u1ecfi nhi\u1ec7t \u0111\u1ed9 c\u1ef1c \u0111oan trong kh\u00f4ng gian.<\/p>\n<\/li>\n<li><b>\u00d4 t\u00f4:<\/b>\n<p>Fiberglass v\u00e0 polyurethane foam th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 c\u00e1ch nhi\u1ec7t v\u00e0 gi\u1ea3m ti\u1ebfng \u1ed3n trong xe \u00f4 t\u00f4.<\/p>\n<\/li>\n<p><\/u1><\/p>\n<h2>C\u00e1ch T\u00ednh Kh\u1ea3 N\u0103ng D\u1eabn Nhi\u1ec7t<\/h2>\n<p>Kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t c\u1ee7a m\u1ed9t v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng c\u00f4ng th\u1ee9c:<\/p>\n<p>\\[<br \/>\nQ = \\frac{k \\cdot A \\cdot \\Delta T}{d}<br \/>\n\\]\n<p>Trong \u0111\u00f3:<\/p>\n<p><u1><\/p>\n<li>Q: L\u01b0\u1ee3ng nhi\u1ec7t truy\u1ec1n qua (W)<\/li>\n<li>k: H\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u (W\/m\u00b7K)<\/li>\n<li>A: Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t truy\u1ec1n nhi\u1ec7t (m<sup>2<\/sup>)<\/li>\n<li>\\(\\Delta T\\): Ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 gi\u1eefa hai m\u1eb7t c\u1ee7a v\u1eadt li\u1ec7u (K)<\/li>\n<li>d: \u0110\u1ed9 d\u00e0y c\u1ee7a v\u1eadt li\u1ec7u (m)<\/li>\n<p><\/u1><\/p>\n<h2>K\u1ebft Lu\u1eadn<\/h2>\n<p>V\u1eadt li\u1ec7u d\u1eabn nhi\u1ec7t th\u1ea5p l\u00e0 y\u1ebfu t\u1ed1 kh\u00f4ng th\u1ec3 thi\u1ebfu trong nhi\u1ec1u \u1ee9ng d\u1ee5ng k\u1ef9 thu\u1eadt nhi\u1ec7t v\u00e0 \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y. Vi\u1ec7c ch\u1ecdn l\u1ef1a \u0111\u00fang lo\u1ea1i v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t kh\u00f4ng ch\u1ec9 c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng m\u00e0 c\u00f2n gi\u1ea3m chi ph\u00ed v\u00e0 b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng. Mong r\u1eb1ng qua b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n \u0111\u00e3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 vai tr\u00f2 v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u d\u1eabn nhi\u1ec7t th\u1ea5p.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>V\u1eadt li\u1ec7u d\u1eabn nhi\u1ec7t th\u1ea5p gi\u00fap h\u1ea1n ch\u1ebf s\u1ef1 truy\u1ec1n nhi\u1ec7t, n\u00e2ng cao hi\u1ec7u qu\u1ea3 c\u00e1ch nhi\u1ec7t trong c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng v\u00e0 thi\u1ebft b\u1ecb 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 optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>V\u1eadt li\u1ec7u d\u1eabn nhi\u1ec7t th\u1ea5p<\/title>\n<meta name=\"description\" content=\"V\u1eadt li\u1ec7u d\u1eabn nhi\u1ec7t 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