{"id":675862,"date":"2024-07-30T18:32:19","date_gmt":"2024-07-30T17:32:19","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=675862"},"modified":"2024-07-30T18:32:19","modified_gmt":"2024-07-30T17:32:19","slug":"cach-tam-chan-buc-xa-giam-truyen-nhiet","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/cach-tam-chan-buc-xa-giam-truyen-nhiet\/","title":{"rendered":"C\u00e1ch t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 gi\u1ea3m truy\u1ec1n nhi\u1ec7t"},"content":{"rendered":"<p class=\"sidekick\">C\u00e1ch t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 gi\u1ea3m truy\u1ec1n nhi\u1ec7t: Hi\u1ec3u c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch c\u00e1c t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 ho\u1ea1t \u0111\u1ed9ng, gi\u1ea3m thi\u1ec3u s\u1ef1 truy\u1ec1n nhi\u1ec7t v\u00e0 \u1ee9ng d\u1ee5ng trong \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/cach_tam_chan_buc_xa_giam_truyen_nhiet.png\" alt=\"C\u00e1ch t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 gi\u1ea3m truy\u1ec1n nhi\u1ec7t\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>C\u00e1ch t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 gi\u1ea3m truy\u1ec1n nhi\u1ec7t<\/h2>\n<p>Trong l\u0129nh v\u1ef1c <em>k\u1ef9 thu\u1eadt nhi\u1ec7t<\/em>, m\u1ed9t trong nh\u1eefng v\u1ea5n \u0111\u1ec1 quan tr\u1ecdng l\u00e0 ki\u1ec3m so\u00e1t v\u00e0 gi\u1ea3m thi\u1ec3u s\u1ef1 truy\u1ec1n nhi\u1ec7t. C\u00e1c <strong>t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1<\/strong> \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c n\u00e0y. D\u01b0\u1edbi \u0111\u00e2y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u c\u00e1ch c\u00e1c t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 ho\u1ea1t \u0111\u1ed9ng \u0111\u1ec3 gi\u1ea3m truy\u1ec1n nhi\u1ec7t.<\/p>\n<h2>B\u1ee9c x\u1ea1 nhi\u1ec7t l\u00e0 g\u00ec?<\/h2>\n<p>B\u1ee9c x\u1ea1 nhi\u1ec7t l\u00e0 s\u1ef1 ph\u00e1t x\u1ea1 v\u00e0 truy\u1ec1n n\u0103ng l\u01b0\u1ee3ng d\u01b0\u1edbi d\u1ea1ng s\u00f3ng \u0111i\u1ec7n t\u1eeb. M\u1ecdi v\u1eadt th\u1ec3 c\u00f3 nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n 0 K \u0111\u1ec1u ph\u00e1t ra b\u1ee9c x\u1ea1 nhi\u1ec7t. V\u00ed d\u1ee5, m\u1eb7t tr\u1eddi l\u00e0 ngu\u1ed3n ph\u00e1t b\u1ee9c x\u1ea1 nhi\u1ec7t ch\u00ednh, v\u00e0 ngay c\u1ea3 c\u01a1 th\u1ec3 ng\u01b0\u1eddi c\u0169ng ph\u00e1t ra b\u1ee9c x\u1ea1 nhi\u1ec7t.<\/p>\n<h2>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1<\/h2>\n<p>C\u00e1c t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd ph\u1ea3n x\u1ea1 v\u00e0 h\u1ea5p th\u1ee5 b\u1ee9c x\u1ea1 nhi\u1ec7t. <\/p>\n<ul> d\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c c\u01a1 ch\u1ebf ch\u00ednh:<\/p>\n<p><u1><\/p>\n<li><strong>Ph\u1ea3n x\u1ea1 b\u1ee9c x\u1ea1 nhi\u1ec7t:<\/strong> C\u00e1c t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb c\u00e1c v\u1eadt li\u1ec7u c\u00f3 kh\u1ea3 n\u0103ng ph\u1ea3n x\u1ea1 cao nh\u01b0 nh\u00f4m ho\u1eb7c b\u1ea1c. Khi b\u1ee9c x\u1ea1 nhi\u1ec7t ti\u1ebfp x\u00fac v\u1edbi b\u1ec1 m\u1eb7t n\u00e0y, n\u0103ng l\u01b0\u1ee3ng b\u1ecb ph\u1ea3n x\u1ea1 tr\u1edf l\u1ea1i thay v\u00ec truy\u1ec1n qua t\u1ea5m ch\u1eafn.<\/li>\n<li><strong>H\u1ea5p th\u1ee5 v\u00e0 t\u00e1i ph\u00e1t x\u1ea1:<\/strong> M\u1ed9t s\u1ed1 t\u1ea5m ch\u1eafn c\u00f3 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 m\u1ed9t ph\u1ea7n b\u1ee9c x\u1ea1 nhi\u1ec7t. Sau \u0111\u00f3, ch\u00fang ph\u00e1t x\u1ea1 l\u1ea1i n\u0103ng l\u01b0\u1ee3ng n\u00e0y theo m\u1ed9t h\u01b0\u1edbng kh\u00e1c ho\u1eb7c v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 th\u1ea5p h\u01a1n, l\u00e0m gi\u1ea3m l\u01b0\u1ee3ng nhi\u1ec7t truy\u1ec1n qua.<\/li>\n<p><\/u1><\/p>\n<h2>Hi\u1ec7u qu\u1ea3 c\u1ee7a t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1<\/h2>\n<p>Hi\u1ec7u qu\u1ea3 c\u1ee7a t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng kh\u1ea3 n\u0103ng gi\u1ea3m b\u1ee9c x\u1ea1 nhi\u1ec7t \u0111\u01b0\u1ee3c truy\u1ec1n qua. C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 bao g\u1ed3m:<\/p>\n<p><u1><\/p>\n<li><strong>H\u1ec7 s\u1ed1 ph\u1ea3n x\u1ea1 (Reflectivity):<\/strong> T\u1ea5m ch\u1eafn c\u00f3 h\u1ec7 s\u1ed1 ph\u1ea3n x\u1ea1 cao s\u1ebd gi\u1ea3m truy\u1ec1n nhi\u1ec7t t\u1ed1t h\u01a1n. H\u1ec7 s\u1ed1 n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c k\u00fd hi\u1ec7u l\u00e0 \u03c1 (rho).<\/li>\n<li><strong>H\u1ec7 s\u1ed1 h\u1ea5p th\u1ee5 (Absorptivity):<\/strong> H\u1ec7 s\u1ed1 h\u1ea5p th\u1ee5 k\u00fd hi\u1ec7u l\u00e0 \u03b1 (alpha). T\u1ea5m ch\u1eafn c\u00f3 h\u1ec7 s\u1ed1 h\u1ea5p th\u1ee5 th\u1ea5p s\u1ebd ph\u1ea3n x\u1ea1 nhi\u1ec1u nhi\u1ec7t h\u01a1n v\u00e0 do \u0111\u00f3 gi\u1ea3m truy\u1ec1n nhi\u1ec7t t\u1ed1t h\u01a1n.<\/li>\n<li><strong>Nhi\u1ec7t \u0111\u1ed9 c\u1ee7a t\u1ea5m ch\u1eafn:<\/strong> Nhi\u1ec7t \u0111\u1ed9 c\u1ee7a t\u1ea5m ch\u1eafn c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3. Nhi\u1ec7t \u0111\u1ed9 cao c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng ph\u1ea3n x\u1ea1 v\u00e0 t\u0103ng kh\u1ea3 n\u0103ng ph\u00e1t x\u1ea1 ng\u01b0\u1ee3c l\u1ea1i c\u1ee7a t\u1ea5m ch\u1eafn.<\/li>\n<p><\/u1><\/p>\n<h2>\u1ee8ng d\u1ee5ng c\u1ee7a t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1<\/h2>\n<p>T\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u ng\u00e0nh kh\u00e1c nhau:<\/p>\n<p><u1><\/p>\n<li><strong>X\u00e2y d\u1ef1ng:<\/strong> T\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c t\u1ea5m c\u00e1ch nhi\u1ec7t t\u01b0\u1eddng v\u00e0 m\u00e1i nh\u00e0 \u0111\u1ec3 gi\u1ea3m thi\u1ec3u nhi\u1ec7t x\u00e2m nh\u1eadp v\u00e0o b\u00ean trong c\u00f4ng tr\u00ecnh.<\/li>\n<li><strong>C\u00f4ng nghi\u1ec7p \u00f4 t\u00f4:<\/strong> C\u00e1c t\u1ea5m ch\u1eafn gi\u00fap b\u1ea3o v\u1ec7 c\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a xe kh\u1ecfi nhi\u1ec7t \u0111\u1ed9 cao, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng v\u00e0 an to\u00e0n.<\/li>\n<li><strong>Kh\u00f4ng gian v\u0169 tr\u1ee5:<\/strong> T\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 b\u1ea3o v\u1ec7 c\u00e1c thi\u1ebft b\u1ecb v\u00e0 phi h\u00e0nh gia kh\u1ecfi b\u1ee9c x\u1ea1 nhi\u1ec7t m\u1ea1nh t\u1eeb m\u1eb7t tr\u1eddi.<\/li>\n<p><\/u1><\/p>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>T\u00f3m l\u1ea1i, c\u00e1c t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c gi\u1ea3m truy\u1ec1n nhi\u1ec7t b\u1eb1ng c\u00e1ch ph\u1ea3n x\u1ea1 v\u00e0 h\u1ea5p th\u1ee5 b\u1ee9c x\u1ea1 nhi\u1ec7t. Hi\u1ec3u r\u00f5 c\u01a1 ch\u1ebf v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang gi\u00fap ch\u00fang ta thi\u1ebft k\u1ebf v\u00e0 \u00e1p d\u1ee5ng c\u00e1c gi\u1ea3i ph\u00e1p hi\u1ec7u qu\u1ea3 trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e1ch t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 gi\u1ea3m truy\u1ec1n nhi\u1ec7t: Hi\u1ec3u c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch c\u00e1c t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 ho\u1ea1t \u0111\u1ed9ng, gi\u1ea3m thi\u1ec3u s\u1ef1 truy\u1ec1n nhi\u1ec7t v\u00e0 \u1ee9ng d\u1ee5ng trong \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y.<\/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>C\u00e1ch t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 gi\u1ea3m truy\u1ec1n nhi\u1ec7t<\/title>\n<meta name=\"description\" content=\"C\u00e1ch t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 gi\u1ea3m truy\u1ec1n nhi\u1ec7t: Hi\u1ec3u c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch c\u00e1c t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 ho\u1ea1t \u0111\u1ed9ng, gi\u1ea3m thi\u1ec3u s\u1ef1 truy\u1ec1n nhi\u1ec7t v\u00e0 \u1ee9ng d\u1ee5ng trong \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.thermal-engineering.org\/vi\/cach-tam-chan-buc-xa-giam-truyen-nhiet\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u00e1ch t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 gi\u1ea3m truy\u1ec1n nhi\u1ec7t\" \/>\n<meta property=\"og:description\" content=\"C\u00e1ch t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 gi\u1ea3m truy\u1ec1n nhi\u1ec7t: Hi\u1ec3u c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch c\u00e1c t\u1ea5m ch\u1eafn b\u1ee9c x\u1ea1 ho\u1ea1t \u0111\u1ed9ng, gi\u1ea3m thi\u1ec3u s\u1ef1 truy\u1ec1n nhi\u1ec7t v\u00e0 \u1ee9ng d\u1ee5ng trong \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.thermal-engineering.org\/vi\/cach-tam-chan-buc-xa-giam-truyen-nhiet\/\" \/>\n<meta property=\"og:site_name\" content=\"Thermal Engineering\" \/>\n<meta property=\"article:published_time\" content=\"2024-07-30T17:32:19+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/cach_tam_chan_buc_xa_giam_truyen_nhiet.png\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\">\n\t<meta name=\"twitter:data1\" content=\"Nick Connor\">\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\">\n\t<meta name=\"twitter:data2\" content=\"4 minutes\">\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\",\"url\":\"https:\/\/www.thermal-engineering.org\/fr\/\",\"name\":\"Thermal Engineering\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":\"https:\/\/www.thermal-engineering.org\/fr\/?s={search_term_string}\",\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"vi-VN\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/cach-tam-chan-buc-xa-giam-truyen-nhiet\/#primaryimage\",\"inLanguage\":\"vi-VN\",\"url\":\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/cach_tam_chan_buc_xa_giam_truyen_nhiet.png\",\"width\":1000,\"height\":1000,\"caption\":\"C\\u00e1ch t\\u1ea5m ch\\u1eafn b\\u1ee9c x\\u1ea1 gi\\u1ea3m truy\\u1ec1n nhi\\u1ec7t\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/cach-tam-chan-buc-xa-giam-truyen-nhiet\/#webpage\",\"url\":\"https:\/\/www.thermal-engineering.org\/vi\/cach-tam-chan-buc-xa-giam-truyen-nhiet\/\",\"name\":\"C\\u00e1ch t\\u1ea5m ch\\u1eafn b\\u1ee9c x\\u1ea1 gi\\u1ea3m truy\\u1ec1n nhi\\u1ec7t\",\"isPartOf\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/cach-tam-chan-buc-xa-giam-truyen-nhiet\/#primaryimage\"},\"datePublished\":\"2024-07-30T17:32:19+00:00\",\"dateModified\":\"2024-07-30T17:32:19+00:00\",\"author\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\"},\"description\":\"C\\u00e1ch t\\u1ea5m ch\\u1eafn b\\u1ee9c x\\u1ea1 gi\\u1ea3m truy\\u1ec1n nhi\\u1ec7t: Hi\\u1ec3u c\\u01a1 b\\u1ea3n v\\u1ec1 c\\u00e1ch c\\u00e1c t\\u1ea5m ch\\u1eafn b\\u1ee9c x\\u1ea1 ho\\u1ea1t \\u0111\\u1ed9ng, gi\\u1ea3m thi\\u1ec3u s\\u1ef1 truy\\u1ec1n nhi\\u1ec7t v\\u00e0 \\u1ee9ng d\\u1ee5ng trong \\u0111\\u1eddi s\\u1ed1ng h\\u00e0ng ng\\u00e0y.\",\"inLanguage\":\"vi-VN\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.thermal-engineering.org\/vi\/cach-tam-chan-buc-xa-giam-truyen-nhiet\/\"]}]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\",\"name\":\"Nick Connor\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#personlogo\",\"inLanguage\":\"vi-VN\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/84c0dec310b44b65da29dc9df6925239?s=96&d=mm&r=g\",\"caption\":\"Nick Connor\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","_links":{"self":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/posts\/675862"}],"collection":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/comments?post=675862"}],"version-history":[{"count":0,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/posts\/675862\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/media?parent=675862"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/categories?post=675862"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/tags?post=675862"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}