{"id":673564,"date":"2024-10-04T15:04:10","date_gmt":"2024-10-04T14:04:10","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=673564"},"modified":"2024-10-04T15:04:10","modified_gmt":"2024-10-04T14:04:10","slug":"cach-cach-nhiet-giam-that-thoat-nang-luong","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/cach-cach-nhiet-giam-that-thoat-nang-luong\/","title":{"rendered":"C\u00e1ch c\u00e1ch nhi\u1ec7t gi\u1ea3m th\u1ea5t tho\u00e1t n\u0103ng l\u01b0\u1ee3ng"},"content":{"rendered":"<p class=\"sidekick\">C\u00e1ch c\u00e1ch nhi\u1ec7t gi\u1ea3m th\u1ea5t tho\u00e1t n\u0103ng l\u01b0\u1ee3ng: Gi\u1ea3i th\u00edch ph\u01b0\u01a1ng ph\u00e1p v\u00e0 v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t hi\u1ec7u qu\u1ea3 \u0111\u1ec3 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng trong ng\u00f4i nh\u00e0 v\u00e0 c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/cach_cach_nhiet_giam_that_thoat_nang_luong.png\" alt=\"C\u00e1ch c\u00e1ch nhi\u1ec7t gi\u1ea3m th\u1ea5t tho\u00e1t n\u0103ng l\u01b0\u1ee3ng\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>C\u00e1ch c\u00e1ch nhi\u1ec7t gi\u1ea3m th\u1ea5t tho\u00e1t n\u0103ng l\u01b0\u1ee3ng<\/h2>\n<p>Trong ng\u00e0nh k\u1ef9 thu\u1eadt nhi\u1ec7t, c\u00e1ch nhi\u1ec7t \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng v\u00e0 b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng. C\u00e1ch nhi\u1ec7t kh\u00f4ng ch\u1ec9 gi\u00fap gi\u1eef \u1ea5m v\u00e0o m\u00f9a \u0111\u00f4ng m\u00e0 c\u00f2n gi\u1eef m\u00e1t v\u00e0o m\u00f9a h\u00e8. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p v\u00e0 ch\u1ea5t li\u1ec7u c\u00e1ch nhi\u1ec7t ph\u1ed5 bi\u1ebfn gi\u00fap gi\u1ea3m th\u1ea5t tho\u00e1t n\u0103ng l\u01b0\u1ee3ng.<\/p>\n<h2>Ph\u01b0\u01a1ng ph\u00e1p c\u00e1ch nhi\u1ec7t<\/h2>\n<ul>\n<li><b>C\u00e1ch nhi\u1ec7t b\u1eb1ng b\u1ecdt x\u1ed1p:<\/b> B\u1ecdt x\u1ed1p l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t hi\u1ec7u qu\u1ea3 nh\u1edd v\u00e0o t\u00ednh ch\u1ea5t nh\u1eb9, d\u1ec5 thi c\u00f4ng v\u00e0 c\u00e1ch nhi\u1ec7t t\u1ed1t. C\u00e1c lo\u1ea1i b\u1ecdt x\u1ed1p th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng bao g\u1ed3m polystyrene (EPS, XPS) v\u00e0 polyurethane (PU).<\/li>\n<li><b>C\u00e1ch nhi\u1ec7t b\u1eb1ng b\u00f4ng kho\u00e1ng:<\/b> B\u00f4ng kho\u00e1ng l\u00e0 v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb \u0111\u00e1 bazan ho\u1eb7c \u0111\u00e1 x\u1ec9, c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 ch\u1ed1ng ch\u00e1y t\u1ed1t. \u0110\u00e2y l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p c\u00e1ch nhi\u1ec7t ph\u1ed5 bi\u1ebfn trong c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng.<\/li>\n<li><b>C\u00e1ch nhi\u1ec7t b\u1eb1ng k\u00ednh b\u00f4ng:<\/b> K\u00ednh b\u00f4ng l\u00e0m t\u1eeb s\u1ee3i th\u1ee7y tinh c\u00f3 kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t, c\u00e1ch \u00e2m v\u00e0 ch\u1ed1ng ch\u00e1y hi\u1ec7u qu\u1ea3. Tuy nhi\u00ean, khi thi c\u00f4ng c\u1ea7n ch\u00fa \u00fd \u0111\u1ebfn vi\u1ec7c b\u1ea3o v\u1ec7 s\u1ee9c kh\u1ecfe v\u00ec s\u1ee3i th\u1ee7y tinh c\u00f3 th\u1ec3 g\u00e2y k\u00edch \u1ee9ng da.<\/li>\n<li><b>C\u00e1ch nhi\u1ec7t ch\u00e2n kh\u00f4ng:<\/b> S\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 ch\u00e2n kh\u00f4ng gi\u00fap ng\u0103n ch\u1eb7n s\u1ef1 truy\u1ec1n nhi\u1ec7t qua kh\u00f4ng kh\u00ed. V\u00ed d\u1ee5, c\u00e1c t\u1ea5m panel ch\u00e2n kh\u00f4ng (VIP) c\u00f3 kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t g\u1ea5p nhi\u1ec1u l\u1ea7n so v\u1edbi c\u00e1c v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t truy\u1ec1n th\u1ed1ng.<\/li>\n<\/ul>\n<h2>Ch\u1ea5t li\u1ec7u c\u00e1ch nhi\u1ec7t<\/h2>\n<ol>\n<li><b>Polystyrene m\u1edf r\u1ed9ng (EPS) v\u00e0 polystyrene \u00e9p \u0111\u00f9n (XPS):<\/b> \u0110\u00e2y l\u00e0 hai lo\u1ea1i v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t nh\u1eb9 v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t cao. EPS ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong t\u1ea5m x\u1ed1p tr\u1eafng, trong khi XPS th\u01b0\u1eddng \u1ee9ng d\u1ee5ng trong t\u1ea5m x\u1ed1p m\u00e0u.<\/li>\n<li><b>Polyurethane (PU):<\/b> PU l\u00e0 v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t hi\u1ec7u qu\u1ea3, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng, t\u1eeb t\u1ea5m c\u00e1ch nhi\u1ec7t \u0111\u1ebfn h\u1ec7 th\u1ed1ng \u1ed1ng d\u1eabn.<\/li>\n<li><b>Cellulose:<\/b> Cellulose \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb gi\u1ea5y t\u00e1i ch\u1ebf v\u00e0 c\u00f3 t\u00ednh c\u00e1ch nhi\u1ec7t, c\u00e1ch \u00e2m t\u1ed1t. \u0110\u00e2y l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng.<\/li>\n<li><b>Aerogel:<\/b> Aerogel l\u00e0 m\u1ed9t trong nh\u1eefng v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t m\u1ea1nh nh\u1ea5t th\u1ebf gi\u1edbi, v\u1edbi kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t g\u1ea5p 3 l\u1ea7n c\u00e1c v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t th\u00f4ng th\u01b0\u1eddng.<\/li>\n<\/ol>\n<h2>C\u00f4ng th\u1ee9c t\u00ednh n\u0103ng l\u01b0\u1ee3ng th\u1ea5t tho\u00e1t<\/h2>\n<p>\u0110\u1ec3 t\u00ednh to\u00e1n n\u0103ng l\u01b0\u1ee3ng th\u1ea5t tho\u00e1t qua m\u1ed9t b\u1ec1 m\u1eb7t \u0111\u01b0\u1ee3c c\u00e1ch nhi\u1ec7t, ch\u00fang ta d\u00f9ng c\u00f4ng th\u1ee9c truy\u1ec1n nhi\u1ec7t:<\/p>\n<p>Q = U * A * \u0394T<\/p>\n<p>Trong \u0111\u00f3:<\/p>\n<ul>\n<li>Q: N\u0103ng l\u01b0\u1ee3ng th\u1ea5t tho\u00e1t (th\u01b0\u1eddng t\u00ednh b\u1eb1ng Watt, W)<\/li>\n<li>U: H\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t to\u00e0n ph\u1ea7n (W\/m\u00b2.K)<\/li>\n<li>A: Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t c\u00e1ch nhi\u1ec7t (m\u00b2)<\/li>\n<li>\u0394T: Ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 gi\u1eefa hai m\u1eb7t (K)<\/li>\n<\/ul>\n<p>B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t c\u00f3 h\u1ec7 s\u1ed1 U nh\u1ecf, ch\u00fang ta c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u n\u0103ng l\u01b0\u1ee3ng th\u1ea5t tho\u00e1t qua c\u00e1c b\u1ec1 m\u1eb7t c\u00e1ch nhi\u1ec7t.<\/p>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>C\u00e1ch nhi\u1ec7t l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u qu\u1ea3 \u0111\u1ec3 gi\u1ea3m th\u1ea5t tho\u00e1t n\u0103ng l\u01b0\u1ee3ng, b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed. Vi\u1ec7c ch\u1ecdn l\u1ef1a \u0111\u00fang v\u1eadt li\u1ec7u v\u00e0 ph\u01b0\u01a1ng ph\u00e1p c\u00e1ch nhi\u1ec7t s\u1ebd gi\u00fap t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u qu\u1ea3 c\u00e1ch nhi\u1ec7t v\u00e0 s\u1ed1ng trong m\u00f4i tr\u01b0\u1eddng tho\u1ea3i m\u00e1i h\u01a1n.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e1ch c\u00e1ch nhi\u1ec7t gi\u1ea3m th\u1ea5t tho\u00e1t n\u0103ng l\u01b0\u1ee3ng: Gi\u1ea3i th\u00edch ph\u01b0\u01a1ng ph\u00e1p v\u00e0 v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t hi\u1ec7u qu\u1ea3 \u0111\u1ec3 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng trong ng\u00f4i nh\u00e0 v\u00e0 c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng.<\/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\/ 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