{"id":681895,"date":"2024-08-17T19:05:39","date_gmt":"2024-08-17T18:05:39","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=681895"},"modified":"2024-08-17T19:05:39","modified_gmt":"2024-08-17T18:05:39","slug":"3-phuong-phap-truyen-nhiet-buc-xa-pho-bien","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/3-phuong-phap-truyen-nhiet-buc-xa-pho-bien\/","title":{"rendered":"3 Ph\u01b0\u01a1ng Ph\u00e1p Truy\u1ec1n Nhi\u1ec7t B\u1ee9c X\u1ea1 Ph\u1ed5 Bi\u1ebfn"},"content":{"rendered":"<p class=\"sidekick\">3 Ph\u01b0\u01a1ng Ph\u00e1p Truy\u1ec1n Nhi\u1ec7t B\u1ee9c X\u1ea1 Ph\u1ed5 Bi\u1ebfn: Gi\u1ea3i th\u00edch chi ti\u1ebft v\u1ec1 ba ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1, nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng trong th\u1ef1c t\u1ebf.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/3_phuong_phap_truyen_nhiet_buc_xa_pho_bien.png\" alt=\"3 Ph\u01b0\u01a1ng Ph\u00e1p Truy\u1ec1n Nhi\u1ec7t B\u1ee9c X\u1ea1 Ph\u1ed5 Bi\u1ebfn\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>3 Ph\u01b0\u01a1ng Ph\u00e1p Truy\u1ec1n Nhi\u1ec7t B\u1ee9c X\u1ea1 Ph\u1ed5 Bi\u1ebfn<\/h2>\n<p>Truy\u1ec1n nhi\u1ec7t l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m quan tr\u1ecdng trong ng\u00e0nh k\u1ef9 thu\u1eadt nhi\u1ec7t, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn nhi\u1ec1u l\u0129nh v\u1ef1c t\u1eeb s\u1ea3n xu\u1ea5t n\u0103ng l\u01b0\u1ee3ng cho \u0111\u1ebfn thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed. C\u00f3 ba ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n nhi\u1ec7t ch\u00ednh: d\u1eabn nhi\u1ec7t, \u0111\u1ed1i l\u01b0u v\u00e0 b\u1ee9c x\u1ea1. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd t\u1eadp trung v\u00e0o ba ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch ch\u00fang ho\u1ea1t \u0111\u1ed9ng.<\/p>\n<h2>1. Truy\u1ec1n Nhi\u1ec7t B\u1ee9c X\u1ea1 Nhi\u1ec7t<\/h2>\n<p>Truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 nhi\u1ec7t l\u00e0 s\u1ef1 truy\u1ec1n n\u0103ng l\u01b0\u1ee3ng d\u01b0\u1edbi d\u1ea1ng s\u00f3ng \u0111i\u1ec7n t\u1eeb, c\u1ee5 th\u1ec3 l\u00e0 tia h\u1ed3ng ngo\u1ea1i, t\u1eeb m\u1ed9t v\u1eadt th\u1ec3 n\u00f3ng \u0111\u1ebfn m\u1ed9t v\u1eadt th\u1ec3 l\u1ea1nh h\u01a1n. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng \u0111\u00f2i h\u1ecfi m\u00f4i tr\u01b0\u1eddng trung gian, ngh\u0129a l\u00e0 c\u00f3 th\u1ec3 x\u1ea3y ra trong ch\u00e2n kh\u00f4ng &#8211; v\u00ed d\u1ee5 nh\u01b0 b\u1ee9c x\u1ea1 t\u1eeb m\u1eb7t tr\u1eddi t\u1edbi tr\u00e1i \u0111\u1ea5t.<\/p>\n<ul>\n<li><b>Ph\u01b0\u01a1ng tr\u00ecnh Stefan-Boltzmann:<\/b> N\u0103ng l\u01b0\u1ee3ng b\u1ee9c x\u1ea1 t\u1eeb m\u1ed9t b\u1ec1 m\u1eb7t \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 b\u1edfi ph\u01b0\u01a1ng tr\u00ecnh Stefan-Boltzmann:<br \/>\n  <br \/><i>E<\/i> = \u03c3T<sup>4<\/sup>,<br \/>\n  trong \u0111\u00f3 <i>\u03c3<\/i> l\u00e0 h\u1eb1ng s\u1ed1 Stefan-Boltzmann v\u00e0 <i>T<\/i> l\u00e0 nhi\u1ec7t \u0111\u1ed9 tuy\u1ec7t \u0111\u1ed1i c\u1ee7a b\u1ec1 m\u1eb7t (K).<\/li>\n<li><b>\u1ee8ng d\u1ee5ng:<\/b> Pin m\u1eb7t tr\u1eddi, m\u00e1y s\u01b0\u1edfi h\u1ed3ng ngo\u1ea1i, v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng th\u00f4ng gi\u00f3.<\/li>\n<\/ul>\n<h2>2. Truy\u1ec1n Nhi\u1ec7t B\u1ee9c X\u1ea1 Chuy\u1ec3n Pha<\/h2>\n<p>Trong qu\u00e1 tr\u00ecnh chuy\u1ec3n pha, n\u0103ng l\u01b0\u1ee3ng b\u1ee9c x\u1ea1 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i t\u1eeb r\u1eafn sang l\u1ecfng ho\u1eb7c t\u1eeb l\u1ecfng sang kh\u00ed m\u00e0 kh\u00f4ng thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 c\u1ee7a h\u1ec7 th\u1ed1ng. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng g\u1eb7p trong c\u00e1c h\u1ec7 th\u1ed1ng l\u00e0m l\u1ea1nh v\u00e0 \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed.<\/p>\n<ul>\n<li><b>S\u1ef1 bay h\u01a1i:<\/b> Qu\u00e1 tr\u00ecnh chuy\u1ec3n t\u1eeb l\u1ecfng sang kh\u00ed. V\u00ed d\u1ee5: s\u1ef1 bay h\u01a1i n\u01b0\u1edbc trong h\u1ec7 th\u1ed1ng l\u00e0m l\u1ea1nh \u0111\u1ec3 h\u1ea5p th\u1ee5 nhi\u1ec7t.<\/li>\n<li><b>S\u1ef1 ng\u01b0ng t\u1ee5:<\/b> Qu\u00e1 tr\u00ecnh chuy\u1ec3n t\u1eeb kh\u00ed sang l\u1ecfng. V\u00ed d\u1ee5: ng\u01b0ng t\u1ee5 h\u01a1i n\u01b0\u1edbc trong h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t.<\/li>\n<li><b>\u1ee8ng d\u1ee5ng:<\/b> L\u00e0m l\u1ea1nh, s\u1ea5y kh\u00f4, v\u00e0 c\u00e1c qu\u00e1 tr\u00ecnh c\u00f4ng nghi\u1ec7p kh\u00e1c.<\/li>\n<\/ul>\n<h2>3. Truy\u1ec1n Nhi\u1ec7t B\u1ee9c X\u1ea1 \u0110i\u1ec7n T\u1eeb<\/h2>\n<p>Truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 \u0111i\u1ec7n t\u1eeb li\u00ean quan \u0111\u1ebfn c\u00e1c d\u1ea1ng ph\u1ed5 kh\u00e1c ngo\u00e0i tia h\u1ed3ng ngo\u1ea1i, th\u01b0\u1eddng l\u00e0 \u00e1nh s\u00e1ng kh\u1ea3 ki\u1ebfn ho\u1eb7c tia c\u1ef1c t\u00edm. \u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n nhi\u1ec7t quan tr\u1ecdng trong l\u0129nh v\u1ef1c n\u0103ng l\u01b0\u1ee3ng t\u00e1i t\u1ea1o v\u00e0 chi\u1ebfu s\u00e1ng.<\/p>\n<ul>\n<li><b>\u0110\u00e8n LED:<\/b> Chi\u1ebfu s\u00e1ng b\u1eb1ng s\u1ef1 ph\u00e1t s\u00e1ng \u0111i\u1ec7n ph\u00e1t ra n\u0103ng l\u01b0\u1ee3ng d\u01b0\u1edbi d\u1ea1ng \u00e1nh s\u00e1ng nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c.<\/li>\n<li><b>Pin m\u1eb7t tr\u1eddi:<\/b> Chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng t\u1eeb \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi (b\u1ee9c x\u1ea1 \u0111i\u1ec7n t\u1eeb) th\u00e0nh \u0111i\u1ec7n n\u0103ng qua hi\u1ec7n t\u01b0\u1ee3ng quang \u0111i\u1ec7n.<\/li>\n<li><b>\u1ee8ng d\u1ee5ng:<\/b> H\u1ec7 th\u1ed1ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi, c\u00f4ng ngh\u1ec7 chi\u1ebfu s\u00e1ng, v\u00e0 c\u00e1c thi\u1ebft b\u1ecb quang \u0111i\u1ec7n t\u1eed.<\/li>\n<\/ul>\n<p>Hi\u1ec3u r\u00f5 ba ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 ph\u1ed5 bi\u1ebfn n\u00e0y s\u1ebd gi\u00fap ch\u00fang ta \u1ee9ng d\u1ee5ng ch\u00fang hi\u1ec7u qu\u1ea3 h\u01a1n trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau, t\u1eeb b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng \u0111\u1ebfn vi\u1ec7c c\u1ea3i thi\u1ec7n hi\u1ec7u n\u0103ng c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng k\u1ef9 thu\u1eadt.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>3 Ph\u01b0\u01a1ng Ph\u00e1p Truy\u1ec1n Nhi\u1ec7t B\u1ee9c X\u1ea1 Ph\u1ed5 Bi\u1ebfn: Gi\u1ea3i th\u00edch chi ti\u1ebft v\u1ec1 ba ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1, nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng trong th\u1ef1c t\u1ebf.<\/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>3 Ph\u01b0\u01a1ng Ph\u00e1p Truy\u1ec1n Nhi\u1ec7t B\u1ee9c X\u1ea1 Ph\u1ed5 Bi\u1ebfn<\/title>\n<meta name=\"description\" content=\"3 Ph\u01b0\u01a1ng Ph\u00e1p Truy\u1ec1n Nhi\u1ec7t B\u1ee9c X\u1ea1 Ph\u1ed5 Bi\u1ebfn: Gi\u1ea3i th\u00edch chi ti\u1ebft v\u1ec1 ba ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1, nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng trong th\u1ef1c t\u1ebf.\" \/>\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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