{"id":707227,"date":"2024-09-08T06:09:50","date_gmt":"2024-09-08T05:09:50","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=707227"},"modified":"2024-09-08T06:09:50","modified_gmt":"2024-09-08T05:09:50","slug":"vat-lieu-cach-nhiet-cho-cong-nghe-lanh-sau","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/vat-lieu-cach-nhiet-cho-cong-nghe-lanh-sau\/","title":{"rendered":"V\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t cho c\u00f4ng ngh\u1ec7 l\u1ea1nh s\u00e2u"},"content":{"rendered":"<p class=\"sidekick\">T\u00ecm hi\u1ec3u v\u1ec1 v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t hi\u1ec7u qu\u1ea3 trong c\u00f4ng ngh\u1ec7 l\u1ea1nh s\u00e2u, gi\u00fap gi\u1ea3m n\u0103ng l\u01b0\u1ee3ng ti\u00eau th\u1ee5 v\u00e0 b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/vat_lieu_cach_nhiet_cho_cong_nghe_lanh_sau.png\" alt=\"V\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t cho c\u00f4ng ngh\u1ec7 l\u1ea1nh s\u00e2u\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>V\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t cho c\u00f4ng ngh\u1ec7 l\u1ea1nh s\u00e2u<\/h2>\n<p>Trong ng\u00e0nh c\u00f4ng ngh\u1ec7 l\u1ea1nh s\u00e2u, v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c b\u1ea3o qu\u1ea3n nhi\u1ec7t \u0111\u1ed9 th\u1ea5p v\u00e0 gi\u1ea3m thi\u1ec3u s\u1ef1 truy\u1ec1n nhi\u1ec7t t\u1eeb m\u00f4i tr\u01b0\u1eddng b\u00ean ngo\u00e0i v\u00e0o b\u00ean trong. \u0110i\u1ec1u n\u00e0y gi\u00fap duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh cho c\u00e1c h\u1ec7 th\u1ed1ng v\u00e0 thi\u1ebft b\u1ecb, ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng v\u00e0 t\u0103ng hi\u1ec7u qu\u1ea3 ho\u1ea1t \u0111\u1ed9ng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 lo\u1ea1i v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00f4ng ngh\u1ec7 l\u1ea1nh s\u00e2u.<\/p>\n<h2>1. Polyurethan (PU)<\/h2>\n<p>Polyurethan l\u00e0 m\u1ed9t trong nh\u1eefng v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t ph\u1ed5 bi\u1ebfn nh\u1ea5t trong c\u00f4ng ngh\u1ec7 l\u1ea1nh s\u00e2u do t\u00ednh n\u0103ng c\u00e1ch nhi\u1ec7t cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t t\u1ed1t. PU th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng d\u01b0\u1edbi d\u1ea1ng b\u1ecdt x\u1ed1p (foam) \u0111\u1ec3 n\u1ea1p v\u00e0o c\u00e1c khe h\u1edf, t\u1ea1o th\u00e0nh l\u1edbp c\u00e1ch nhi\u1ec7t ch\u1eafc ch\u1eafn v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n<ul>\n<li>H\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t (k): kho\u1ea3ng 0.022 &#8211; 0.026 W\/mK<\/li>\n<li>Kh\u1ea3 n\u0103ng ch\u1ecbu n\u00e9n cao<\/li>\n<li>D\u1ec5 d\u00e0ng thi c\u00f4ng v\u00e0 t\u1ea1o h\u00ecnh<\/li>\n<\/ul>\n<h2>2. Polystyren (PS)<\/h2>\n<p>Polystyren, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 x\u1ed1p PS, l\u00e0 lo\u1ea1i v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t nh\u1eb9 v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t t\u1ed1t. X\u1ed1p PS th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m t\u1ea5m c\u00e1ch nhi\u1ec7t cho c\u00e1c t\u01b0\u1eddng ng\u0103n, s\u00e0n, ho\u1eb7c tr\u1ea7n trong c\u00e1c h\u1ec7 th\u1ed1ng l\u1ea1nh s\u00e2u.<\/p>\n<ul>\n<li>H\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t (k): kho\u1ea3ng 0.030 &#8211; 0.040 W\/mK<\/li>\n<li>Kh\u00f4ng th\u1ea5m n\u01b0\u1edbc<\/li>\n<li>Kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c k\u00e9m so v\u1edbi PU<\/li>\n<\/ul>\n<h2>3. B\u00f4ng kho\u00e1ng (Rockwool)<\/h2>\n<p>B\u00f4ng kho\u00e1ng l\u00e0 v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t t\u1eeb s\u1ee3i kho\u00e1ng thi\u00ean nhi\u00ean nh\u01b0 \u0111\u00e1 basalt ho\u1eb7c qu\u1eb7ng kim lo\u1ea1i. B\u00f4ng kho\u00e1ng c\u00f3 kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t v\u00e0 c\u00e1ch \u00e2m t\u1ed1t, \u0111\u1ed3ng th\u1eddi kh\u00e1ng l\u1eeda v\u00e0 kh\u00f4ng th\u1ea5m n\u01b0\u1edbc.<\/p>\n<ul>\n<li>H\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t (k): kho\u1ea3ng 0.035 &#8211; 0.045 W\/mK<\/li>\n<li>Ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 r\u1ea5t cao<\/li>\n<li>Ch\u1ed1ng ch\u00e1y t\u1ed1t<\/li>\n<\/ul>\n<h2>4. S\u1ee3i th\u1ee7y tinh (Fiberglass)<\/h2>\n<p>S\u1ee3i th\u1ee7y tinh l\u00e0 v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t kh\u00e1c th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00f4ng ngh\u1ec7 l\u1ea1nh s\u00e2u. V\u1edbi c\u1ea5u tr\u00fac t\u1eeb c\u00e1c s\u1ee3i th\u1ee7y tinh xen k\u1ebd, v\u1eadt li\u1ec7u n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t cao v\u00e0 b\u1ec1n b\u1ec9.<\/p>\n<ul>\n<li>H\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t (k): kho\u1ea3ng 0.030 &#8211; 0.040 W\/mK<\/li>\n<li>Ch\u1ed1ng ch\u00e1y v\u00e0 kh\u00f4ng th\u1ea5m n\u01b0\u1edbc<\/li>\n<li>Nh\u1eb9 v\u00e0 d\u1ec5 thi c\u00f4ng<\/li>\n<\/ul>\n<h2>\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf<\/h2>\n<p>Trong c\u00f4ng ngh\u1ec7 l\u1ea1nh s\u00e2u, c\u00e1c v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ea3o qu\u1ea3n th\u1ef1c ph\u1ea9m, d\u01b0\u1ee3c ph\u1ea9m, v\u00e0 trong c\u00e1c h\u1ec7 th\u1ed1ng l\u1ea1nh c\u00f4ng nghi\u1ec7p. V\u00ed d\u1ee5, PU th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng l\u00e0m l\u1edbp c\u00e1ch nhi\u1ec7t cho t\u1ee7 l\u1ea1nh c\u00f4ng nghi\u1ec7p v\u00e0 m\u00e1y l\u1ea1nh. Polystyren th\u01b0\u1eddng d\u00f9ng trong h\u1ec7 th\u1ed1ng v\u1eadn chuy\u1ec3n l\u1ea1nh nh\u01b0 container ho\u1eb7c th\u00f9ng ch\u1ee9a.<\/p>\n<ol>\n<li>B\u1ea3o qu\u1ea3n th\u1ef1c ph\u1ea9m \u0111\u00f4ng l\u1ea1nh<\/li>\n<li>D\u01b0\u1ee3c ph\u1ea9m nh\u1ea1y c\u1ea3m v\u1edbi nhi\u1ec7t \u0111\u1ed9<\/li>\n<li>H\u1ec7 th\u1ed1ng l\u00e0m l\u1ea1nh c\u00f4ng nghi\u1ec7p<\/li>\n<\/ol>\n<p>Vi\u1ec7c ch\u1ecdn l\u1ef1a v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t ph\u00f9 h\u1ee3p cho t\u1eebng \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3 s\u1ebd gi\u00fap t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u qu\u1ea3 c\u00e1ch nhi\u1ec7t v\u00e0 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng cho h\u1ec7 th\u1ed1ng l\u1ea1nh s\u00e2u.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u v\u1ec1 v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t hi\u1ec7u qu\u1ea3 trong c\u00f4ng ngh\u1ec7 l\u1ea1nh s\u00e2u, gi\u00fap gi\u1ea3m n\u0103ng l\u01b0\u1ee3ng ti\u00eau th\u1ee5 v\u00e0 b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng trong c\u00e1c \u1ee9ng d\u1ee5ng 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 c\u00e1ch nhi\u1ec7t cho c\u00f4ng ngh\u1ec7 l\u1ea1nh s\u00e2u<\/title>\n<meta name=\"description\" content=\"T\u00ecm hi\u1ec3u v\u1ec1 v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t hi\u1ec7u qu\u1ea3 trong c\u00f4ng ngh\u1ec7 l\u1ea1nh s\u00e2u, gi\u00fap gi\u1ea3m n\u0103ng l\u01b0\u1ee3ng ti\u00eau th\u1ee5 v\u00e0 b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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