{"id":693465,"date":"2024-07-28T16:52:25","date_gmt":"2024-07-28T15:52:25","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=693465"},"modified":"2024-07-28T16:52:25","modified_gmt":"2024-07-28T15:52:25","slug":"khoi-be-tong-cach-nhiet-hieu-suat-nhiet-xay-dung","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/khoi-be-tong-cach-nhiet-hieu-suat-nhiet-xay-dung\/","title":{"rendered":"Kh\u1ed1i B\u00ea T\u00f4ng C\u00e1ch Nhi\u1ec7t | Hi\u1ec7u Su\u1ea5t Nhi\u1ec7t, X\u00e2y D\u1ef1ng"},"content":{"rendered":"<p class=\"sidekick\">Kh\u1ed1i b\u00ea t\u00f4ng c\u00e1ch nhi\u1ec7t t\u0103ng hi\u1ec7u su\u1ea5t nhi\u1ec7t trong x\u00e2y d\u1ef1ng, gi\u00fap ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng, gi\u1ea3m chi ph\u00ed s\u01b0\u1edfi \u1ea5m v\u00e0 l\u00e0m m\u00e1t, c\u1ea3i thi\u1ec7n m\u00f4i tr\u01b0\u1eddng s\u1ed1ng.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/khoi_be_tong_cach_nhiet_hieu_suat_nhiet_xay_dung.png\" alt=\"Kh\u1ed1i B\u00ea T\u00f4ng C\u00e1ch Nhi\u1ec7t | Hi\u1ec7u Su\u1ea5t Nhi\u1ec7t, X\u00e2y D\u1ef1ng\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>Kh\u1ed1i B\u00ea T\u00f4ng C\u00e1ch Nhi\u1ec7t<\/h2>\n<p>Trong ng\u00e0nh x\u00e2y d\u1ef1ng, kh\u1ed1i b\u00ea t\u00f4ng c\u00e1ch nhi\u1ec7t \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t nhi\u1ec7t c\u1ee7a c\u00e1c c\u00f4ng tr\u00ecnh. V\u1eadt li\u1ec7u n\u00e0y gi\u00fap ng\u0103n ch\u1eb7n s\u1ef1 th\u1ea5t tho\u00e1t nhi\u1ec7t, gi\u1ea3m ti\u00eau t\u1ed1n n\u0103ng l\u01b0\u1ee3ng v\u00e0 t\u0103ng c\u01b0\u1eddng s\u1ef1 tho\u1ea3i m\u00e1i cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng. \u0110\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 kh\u1ed1i b\u00ea t\u00f4ng c\u00e1ch nhi\u1ec7t, h\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u m\u1ed9t s\u1ed1 kh\u00e1i ni\u1ec7m v\u00e0 \u1ee9ng d\u1ee5ng c\u01a1 b\u1ea3n.<\/p>\n<h2>Hi\u1ec7u Su\u1ea5t Nhi\u1ec7t<\/h2>\n<p>Hi\u1ec7u su\u1ea5t nhi\u1ec7t c\u1ee7a m\u1ed9t kh\u1ed1i b\u00ea t\u00f4ng c\u00e1ch nhi\u1ec7t \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi kh\u1ea3 n\u0103ng c\u1ee7a n\u00f3 trong vi\u1ec7c gi\u1eef nhi\u1ec7t \u0111\u1ed9 b\u00ean trong c\u00f4ng tr\u00ecnh \u1ed5n \u0111\u1ecbnh. C\u00f3 m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t nhi\u1ec7t c\u1ee7a kh\u1ed1i b\u00ea t\u00f4ng:<\/p>\n<ul>\n<li>\u0110\u1ed9 d\u1eabn nhi\u1ec7t (\\(k\\)): \u0110\u00e2y l\u00e0 ch\u1ec9 s\u1ed1 \u0111o l\u01b0\u1eddng kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u. Kh\u1ed1i b\u00ea t\u00f4ng c\u00e1ch nhi\u1ec7t th\u01b0\u1eddng c\u00f3 gi\u00e1 tr\u1ecb \\(k\\) th\u1ea5p \u0111\u1ec3 gi\u1ea3m thi\u1ec3u kh\u1ea3 n\u0103ng truy\u1ec1n nhi\u1ec7t.<\/li>\n<li>\u0110\u1ed9 d\u00e0y c\u1ee7a kh\u1ed1i b\u00ea t\u00f4ng (\\(d\\)): \u0110\u1ed9 d\u00e0y c\u00e0ng l\u1edbn th\u00ec kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t c\u00e0ng t\u1ed1t.<\/li>\n<li>T\u1ef7 tr\u1ecdng (\\(\\rho\\)): T\u1ef7 tr\u1ecdng th\u1ea5p gi\u00fap gi\u1ea3m tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 t\u0103ng kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t.<\/li>\n<\/ul>\n<p>C\u00f4ng th\u1ee9c t\u00ednh kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t c\u1ee7a kh\u1ed1i b\u00ea t\u00f4ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n nh\u01b0 sau:<\/p>\n<p>\\[<br \/>\nU = \\frac{k}{d}<br \/>\n\\]\n<p>Trong \u0111\u00f3:<\/p>\n<ul>\n<li>\\(U\\) l\u00e0 h\u1ec7 s\u1ed1 c\u00e1ch nhi\u1ec7t (W\/m<sup>2<\/sup>K)<\/li>\n<li>\\(k\\) l\u00e0 \u0111\u1ed9 d\u1eabn nhi\u1ec7t (W\/mK)<\/li>\n<li>\\(d\\) l\u00e0 \u0111\u1ed9 d\u00e0y c\u1ee7a v\u1eadt li\u1ec7u (m)<\/li>\n<\/ul>\n<h2>X\u00e2y D\u1ef1ng<\/h2>\n<p>Vi\u1ec7c s\u1eed d\u1ee5ng kh\u1ed1i b\u00ea t\u00f4ng c\u00e1ch nhi\u1ec7t trong x\u00e2y d\u1ef1ng kh\u00f4ng ch\u1ec9 gi\u00fap ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng m\u00e0 c\u00f2n cung c\u1ea5p m\u00f4i tr\u01b0\u1eddng s\u1ed1ng tho\u1ea3i m\u00e1i v\u00e0 b\u1ec1n v\u1eefng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 l\u01b0u \u00fd khi s\u1eed d\u1ee5ng b\u00ea t\u00f4ng c\u00e1ch nhi\u1ec7t trong x\u00e2y d\u1ef1ng:<\/p>\n<ol>\n<li><strong>Ch\u1ecdn v\u1eadt li\u1ec7u:<\/strong> L\u1ef1a ch\u1ecdn c\u00e1c lo\u1ea1i b\u00ea t\u00f4ng c\u00f3 th\u00e0nh ph\u1ea7n ph\u00f9 h\u1ee3p, ch\u1ee9a c\u00e1c ch\u1ea5t t\u1ea1o b\u1ecdt ho\u1eb7c vi l\u01b0\u1ee3ng gi\u00fap t\u0103ng kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t.<\/li>\n<li><strong>Thi\u1ebft k\u1ebf:<\/strong> Thi\u1ebft k\u1ebf k\u1ebft c\u1ea5u c\u00f4ng tr\u00ecnh sao cho kh\u00f4ng gian gi\u1eefa c\u00e1c l\u1edbp b\u00ea t\u00f4ng \u0111\u1ee7 \u0111\u1ec3 t\u1ea1o ra hi\u1ec7u \u1ee9ng c\u00e1ch nhi\u1ec7t t\u1ed1t nh\u1ea5t.<\/li>\n<li><strong>Thi c\u00f4ng:<\/strong> Tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh k\u1ef9 thu\u1eadt v\u00e0 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng trong qu\u00e1 tr\u00ecnh \u0111\u1ed5 b\u00ea t\u00f4ng \u0111\u1ec3 tr\u00e1nh t\u1ea1o ra c\u00e1c khe h\u1edf kh\u00f4ng mong mu\u1ed1n.<\/li>\n<li><strong>B\u1ea3o tr\u00ec:<\/strong> Ki\u1ec3m tra v\u00e0 b\u1ea3o d\u01b0\u1ee1ng \u0111\u1ecbnh k\u1ef3 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ed1i b\u00ea t\u00f4ng lu\u00f4n duy tr\u00ec \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t c\u00e1ch nhi\u1ec7t t\u1ed1i \u01b0u.<\/li>\n<\/ol>\n<p>V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7 v\u00e0 v\u1eadt li\u1ec7u, kh\u1ed1i b\u00ea t\u00f4ng c\u00e1ch nhi\u1ec7t ng\u00e0y c\u00e0ng tr\u1edf n\u00ean ti\u00ean ti\u1ebfn v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n trong vi\u1ec7c cung c\u1ea5p gi\u1ea3i ph\u00e1p x\u00e2y d\u1ef1ng b\u1ec1n v\u1eefng v\u00e0 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kh\u1ed1i b\u00ea t\u00f4ng c\u00e1ch nhi\u1ec7t t\u0103ng hi\u1ec7u su\u1ea5t nhi\u1ec7t trong x\u00e2y d\u1ef1ng, gi\u00fap ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng, gi\u1ea3m chi ph\u00ed s\u01b0\u1edfi \u1ea5m v\u00e0 l\u00e0m m\u00e1t, c\u1ea3i thi\u1ec7n m\u00f4i tr\u01b0\u1eddng s\u1ed1ng.<\/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>Kh\u1ed1i B\u00ea T\u00f4ng C\u00e1ch Nhi\u1ec7t | Hi\u1ec7u Su\u1ea5t Nhi\u1ec7t, X\u00e2y D\u1ef1ng<\/title>\n<meta name=\"description\" content=\"Kh\u1ed1i b\u00ea t\u00f4ng c\u00e1ch nhi\u1ec7t t\u0103ng hi\u1ec7u su\u1ea5t nhi\u1ec7t trong x\u00e2y d\u1ef1ng, gi\u00fap ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng, gi\u1ea3m chi ph\u00ed s\u01b0\u1edfi \u1ea5m v\u00e0 l\u00e0m m\u00e1t, c\u1ea3i thi\u1ec7n m\u00f4i tr\u01b0\u1eddng s\u1ed1ng.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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