{"id":708800,"date":"2024-08-04T02:09:30","date_gmt":"2024-08-04T01:09:30","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=708800"},"modified":"2024-08-04T02:09:30","modified_gmt":"2024-08-04T01:09:30","slug":"nhung-nguyen-ly-can-ban-ve-buc-xa-nhiet-trong-truyen-nhiet","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/nhung-nguyen-ly-can-ban-ve-buc-xa-nhiet-trong-truyen-nhiet\/","title":{"rendered":"Nh\u1eefng Nguy\u00ean L\u00fd C\u0103n B\u1ea3n V\u1ec1 B\u1ee9c X\u1ea1 Nhi\u1ec7t Trong Truy\u1ec1n Nhi\u1ec7t"},"content":{"rendered":"<p class=\"sidekick\">T\u00ecm hi\u1ec3u v\u1ec1 nh\u1eefng nguy\u00ean l\u00fd c\u0103n b\u1ea3n v\u1ec1 b\u1ee9c x\u1ea1 nhi\u1ec7t trong truy\u1ec1n nhi\u1ec7t, kh\u00e1m ph\u00e1 c\u00e1ch n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t \u0111\u01b0\u1ee3c truy\u1ec1n qua c\u00e1c v\u1eadt li\u1ec7u v\u00e0 m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/nhung_nguyen_ly_can_ban_ve_buc_xa_nhiet_trong_truyen_nhiet.png\" alt=\"Nh\u1eefng Nguy\u00ean L\u00fd C\u0103n B\u1ea3n V\u1ec1 B\u1ee9c X\u1ea1 Nhi\u1ec7t Trong Truy\u1ec1n Nhi\u1ec7t\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>Nh\u1eefng Nguy\u00ean L\u00fd C\u0103n B\u1ea3n V\u1ec1 B\u1ee9c X\u1ea1 Nhi\u1ec7t Trong Truy\u1ec1n Nhi\u1ec7t<\/h2>\n<p>B\u1ee9c x\u1ea1 nhi\u1ec7t l\u00e0 m\u1ed9t trong ba ph\u01b0\u01a1ng th\u1ee9c truy\u1ec1n nhi\u1ec7t c\u01a1 b\u1ea3n, b\u00ean c\u1ea1nh d\u1eabn nhi\u1ec7t v\u00e0 \u0111\u1ed1i l\u01b0u. N\u00f3 li\u00ean quan \u0111\u1ebfn s\u1ef1 truy\u1ec1n n\u0103ng l\u01b0\u1ee3ng d\u01b0\u1edbi d\u1ea1ng s\u00f3ng \u0111i\u1ec7n t\u1eeb, v\u00e0 kh\u00f4ng c\u1ea7n \u0111\u1ebfn m\u00f4i gi\u1edbi v\u1eadt ch\u1ea5t \u0111\u1ec3 lan truy\u1ec1n. Hi\u1ec3u r\u00f5 nh\u1eefng nguy\u00ean l\u00fd c\u0103n b\u1ea3n c\u1ee7a b\u1ee9c x\u1ea1 nhi\u1ec7t l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 \u1ee9ng d\u1ee5ng trong nhi\u1ec1u l\u0129nh v\u1ef1c nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc v\u00e0 k\u1ef9 thu\u1eadt nhi\u1ec7t.<\/p>\n<h2>\u0110\u1ecbnh Lu\u1eadt Planck<\/h2>\n<p>\u0110\u1ecbnh lu\u1eadt Planck m\u00f4 t\u1ea3 s\u1ef1 ph\u00e2n b\u1ed1 n\u0103ng l\u01b0\u1ee3ng c\u1ee7a b\u1ee9c x\u1ea1 nhi\u1ec7t t\u1eeb v\u1eadt \u0111en tuy\u1ec7t \u0111\u1ed1i theo t\u1eebng b\u01b0\u1edbc s\u00f3ng. C\u00f4ng th\u1ee9c c\u1ee7a \u0111\u1ecbnh lu\u1eadt Planck \u0111\u01b0\u1ee3c vi\u1ebft nh\u01b0 sau:<\/p>\n<p> \\( I(\u03bb, T) = \\frac{2hc^2}{\u03bb^5} \\cdot \\frac{1}{e^{hc\/\u03bbkT} &#8211; 1} \\)<\/p>\n<p>Trong \u0111\u00f3:<\/p>\n<p><u1><\/p>\n<li> \\( I(\u03bb, T) \\) l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 b\u1ee9c x\u1ea1 \u1edf b\u01b0\u1edbc s\u00f3ng \\(\u03bb\\) v\u00e0 nhi\u1ec7t \u0111\u1ed9 \\(T\\)<\/li>\n<li> \\(h\\) l\u00e0 h\u1eb1ng s\u1ed1 Planck<\/li>\n<li> \\(c\\) l\u00e0 v\u1eadn t\u1ed1c \u00e1nh s\u00e1ng trong ch\u00e2n kh\u00f4ng<\/li>\n<li> \\(k\\) l\u00e0 h\u1eb1ng s\u1ed1 Boltzmann<\/li>\n<p><\/u1><\/p>\n<h2>\u0110\u1ecbnh Lu\u1eadt Stefan-Boltzmann<\/h2>\n<p>\u0110\u1ecbnh lu\u1eadt n\u00e0y cho bi\u1ebft t\u1ed5ng l\u01b0\u1ee3ng n\u0103ng l\u01b0\u1ee3ng b\u1ee9c x\u1ea1 t\u1eeb m\u1ed9t b\u1ec1 m\u1eb7t v\u1eadt \u0111en tuy\u1ec7t \u0111\u1ed1i t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi l\u0169y th\u1eeba b\u1ed1n c\u1ee7a nhi\u1ec7t \u0111\u1ed9 tuy\u1ec7t \u0111\u1ed1i c\u1ee7a b\u1ec1 m\u1eb7t \u0111\u00f3. C\u00f4ng th\u1ee9c c\u1ee7a \u0111\u1ecbnh lu\u1eadt Stefan-Boltzmann l\u00e0:<\/p>\n<p> \\( E = \u03c3T^4 \\)<\/p>\n<p>Trong \u0111\u00f3:<\/p>\n<p><u1><\/p>\n<li> \\(E\\) l\u00e0 n\u0103ng l\u01b0\u1ee3ng b\u1ee9c x\u1ea1 tr\u00ean m\u1ed9t \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch<\/li>\n<li> \\(\u03c3\\) l\u00e0 h\u1eb1ng s\u1ed1 Stefan-Boltzmann<\/li>\n<li> \\(T\\) l\u00e0 nhi\u1ec7t \u0111\u1ed9 tuy\u1ec7t \u0111\u1ed1i<\/li>\n<p><\/u1><\/p>\n<h2>\u0110\u1ecbnh Lu\u1eadt Wien<\/h2>\n<p>\u0110\u1ecbnh lu\u1eadt Wien cho bi\u1ebft b\u01b0\u1edbc s\u00f3ng \u1edf \u0111\u00f3 c\u01b0\u1eddng \u0111\u1ed9 b\u1ee9c x\u1ea1 t\u1eeb v\u1eadt \u0111en \u0111\u1ea1t c\u1ef1c \u0111\u1ea1i t\u1ec9 l\u1ec7 ngh\u1ecbch v\u1edbi nhi\u1ec7t \u0111\u1ed9 tuy\u1ec7t \u0111\u1ed1i c\u1ee7a v\u1eadt \u0111\u00f3. C\u00f4ng th\u1ee9c c\u1ee7a \u0111\u1ecbnh lu\u1eadt Wien l\u00e0:<\/p>\n<p> \\(\u03bb_{\\text{max}} = \\frac{b}{T} \\)<\/p>\n<p>Trong \u0111\u00f3:<\/p>\n<p><u1><\/p>\n<li> \\(\u03bb_{\\text{max}}\\) l\u00e0 b\u01b0\u1edbc s\u00f3ng t\u1ea1i c\u1ef1c \u0111\u1ea1i c\u01b0\u1eddng \u0111\u1ed9 b\u1ee9c x\u1ea1<\/li>\n<li> \\(b\\) l\u00e0 h\u1eb1ng s\u1ed1 d\u1ecbch chuy\u1ec3n Wien<\/li>\n<li> \\(T\\) l\u00e0 nhi\u1ec7t \u0111\u1ed9 tuy\u1ec7t \u0111\u1ed1i<\/li>\n<p><\/u1><\/p>\n<h2>\u1ee8ng D\u1ee5ng Th\u1ef1c Ti\u1ec5n<\/h2>\n<p>C\u00e1c nguy\u00ean l\u00fd b\u1ee9c x\u1ea1 nhi\u1ec7t c\u00f3 r\u1ea5t nhi\u1ec1u \u1ee9ng d\u1ee5ng trong \u0111\u1eddi s\u1ed1ng v\u00e0 c\u00f4ng nghi\u1ec7p, bao g\u1ed3m:<\/p>\n<p><o1><\/p>\n<li>Thi\u1ebft k\u1ebf v\u00e0 ch\u1ebf t\u1ea1o h\u1ec7 th\u1ed1ng t\u1ea3n nhi\u1ec7t cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed.<\/li>\n<li>T\u00ednh to\u00e1n v\u00e0 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c t\u1ea5m pin n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi.<\/li>\n<li>Ph\u00e1t tri\u1ec3n c\u00f4ng ngh\u1ec7 v\u1eadt li\u1ec7u ch\u1ecbu nhi\u1ec7t cao.<\/li>\n<p><\/o1><\/p>\n<h2>K\u1ebft Lu\u1eadn<\/h2>\n<p>Hi\u1ec3u r\u00f5 c\u00e1c nguy\u00ean l\u00fd c\u1ee7a b\u1ee9c x\u1ea1 nhi\u1ec7t kh\u00f4ng ch\u1ec9 gi\u00fap ch\u00fang ta n\u1eafm b\u1eaft c\u00e1ch m\u00e0 n\u0103ng l\u01b0\u1ee3ng truy\u1ec1n trong kh\u00f4ng gian, m\u00e0 c\u00f2n g\u1ee3i m\u1edf nhi\u1ec1u \u1ee9ng d\u1ee5ng h\u1eefu \u00edch trong k\u1ef9 thu\u1eadt nhi\u1ec7t v\u00e0 n\u0103ng l\u01b0\u1ee3ng. T\u1eeb vi\u1ec7c thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng hi\u1ec7u qu\u1ea3 h\u01a1n \u0111\u1ebfn vi\u1ec7c ph\u00e1t tri\u1ec3n c\u00e1c c\u00f4ng ngh\u1ec7 m\u1edbi, b\u1ee9c x\u1ea1 nhi\u1ec7t l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng trong r\u1ea5t nhi\u1ec1u l\u0129nh v\u1ef1c.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u v\u1ec1 nh\u1eefng nguy\u00ean l\u00fd c\u0103n b\u1ea3n v\u1ec1 b\u1ee9c x\u1ea1 nhi\u1ec7t trong truy\u1ec1n nhi\u1ec7t, kh\u00e1m ph\u00e1 c\u00e1ch n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t \u0111\u01b0\u1ee3c truy\u1ec1n qua c\u00e1c v\u1eadt li\u1ec7u v\u00e0 m\u00f4i tr\u01b0\u1eddng kh\u00e1c nhau.<\/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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