{"id":684396,"date":"2024-08-01T12:06:38","date_gmt":"2024-08-01T11:06:38","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=684396"},"modified":"2024-08-01T12:06:38","modified_gmt":"2024-08-01T11:06:38","slug":"tang-cuong-truyen-nhiet-trong-lo-phan-ung-hat-nhan","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/tang-cuong-truyen-nhiet-trong-lo-phan-ung-hat-nhan\/","title":{"rendered":"T\u0103ng c\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t trong l\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n"},"content":{"rendered":"<p class=\"sidekick\">T\u0103ng c\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t trong l\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n: c\u1ea3i ti\u1ebfn hi\u1ec7u qu\u1ea3 l\u00e0m m\u00e1t, \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng trong quy tr\u00ecnh v\u1eadn h\u00e0nh.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/tang_cuong_truyen_nhiet_trong_lo_phan_ung_hat_nhan.png\" alt=\"T\u0103ng c\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t trong l\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>T\u0103ng c\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t trong l\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n<\/h2>\n<p>Trong l\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n, qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t \u0111\u00f3ng vai tr\u00f2 c\u1ef1c k\u1ef3 quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng. L\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n t\u1ea1o ra m\u1ed9t l\u01b0\u1ee3ng n\u0103ng l\u01b0\u1ee3ng kh\u1ed5ng l\u1ed3 t\u1eeb ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ea1ch, v\u00e0 vi\u1ec7c truy\u1ec1n nhi\u1ec7t hi\u1ec7u qu\u1ea3 gi\u00fap duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 trong ph\u1ea1m vi an to\u00e0n, \u0111\u1ed3ng th\u1eddi chuy\u1ec3n nhi\u1ec7t n\u0103ng n\u00e0y \u0111\u1ebfn h\u1ec7 th\u1ed1ng ph\u00e1t \u0111i\u1ec7n.<\/p>\n<h2>Nguy\u00ean l\u00fd truy\u1ec1n nhi\u1ec7t<\/h2>\n<p>Truy\u1ec1n nhi\u1ec7t trong m\u00f4i tr\u01b0\u1eddng l\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n th\u01b0\u1eddng di\u1ec5n ra qua ba c\u00e1ch ch\u00ednh:<\/p>\n<p><u1><\/p>\n<li><b>D\u1eabn nhi\u1ec7t (Conduction):<\/b> Qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t qua v\u1eadt li\u1ec7u r\u1eafn nh\u01b0 \u1ed1ng d\u1eabn hay thanh nhi\u00ean li\u1ec7u.<\/li>\n<li><b>\u0110\u1ed1i l\u01b0u (Convection):<\/b> Qu\u00e1 tr\u00ecnh chuy\u1ec3n nhi\u1ec7t trong ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed, ch\u1eb3ng h\u1ea1n nh\u01b0 n\u01b0\u1edbc ho\u1eb7c kh\u00ed CO\u2082 d\u00f9ng trong l\u00f2 ph\u1ea3n \u1ee9ng.<\/li>\n<li><b>B\u1ee9c x\u1ea1 (Radiation):<\/b> Truy\u1ec1n nhi\u1ec7t qua s\u00f3ng \u0111i\u1ec7n t\u1eeb, th\u01b0\u1eddng kh\u00f4ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong l\u00f2 ph\u1ea3n \u1ee9ng nh\u01b0ng v\u1eabn c\u00f3 m\u1eb7t.<\/li>\n<p><\/u1><\/p>\n<h2>C\u1ea3i ti\u1ebfn v\u00e0 k\u1ef9 thu\u1eadt t\u0103ng c\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t<\/h2>\n<p>\u0110\u1ec3 t\u1ed1i \u01b0u h\u00f3a qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t trong l\u00f2 ph\u1ea3n \u1ee9ng, c\u00f3 m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p v\u00e0 k\u1ef9 thu\u1eadt \u0111ang \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng v\u00e0 nghi\u00ean c\u1ee9u:<\/p>\n<p><o1><\/p>\n<li><b>T\u0103ng c\u01b0\u1eddng di\u1ec7n t\u00edch ti\u1ebfp x\u00fac:<\/b> D\u00f9ng c\u00e1c thanh d\u1eabn nhi\u1ec7t c\u00f3 c\u00e1nh (fins) ho\u1eb7c b\u1ec1 m\u1eb7t g\u1ed3 gh\u1ec1 \u0111\u1ec3 t\u0103ng di\u1ec7n t\u00edch ti\u1ebfp x\u00fac v\u1edbi m\u00f4i ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed l\u00e0m m\u00e1t.<\/li>\n<li><b>D\u00f2ng ch\u1ea3y xo\u00e1y (Turbulent Flow):<\/b> Thi\u1ebft k\u1ebf \u1ed1ng d\u1eabn v\u00e0 k\u00eanh l\u01b0u th\u00f4ng \u0111\u1ec3 t\u1ea1o ra d\u00f2ng ch\u1ea3y xo\u00e1y, gi\u00fap t\u0103ng c\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t so v\u1edbi d\u00f2ng ch\u1ea3y \u0111\u1ec1u (laminar flow).<\/li>\n<li><b>Thay \u0111\u1ed5i ch\u1ea5t l\u00e0m m\u00e1t (Coolant):<\/b> S\u1eed d\u1ee5ng c\u00e1c ch\u1ea5t l\u00e0m m\u00e1t kh\u00e1c nhau nh\u01b0 kim lo\u1ea1i l\u1ecfng (l\u01b0u hu\u1ef3nh l\u1ecfng ho\u1eb7c ch\u00ec-bismuth) thay v\u00ec n\u01b0\u1edbc \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t.<\/li>\n<li><b>H\u1ec7 th\u1ed1ng b\u01a1m nhi\u1ec7t (Heat Pump):<\/b> S\u1eed d\u1ee5ng b\u01a1m nhi\u1ec7t \u0111\u1ec3 chuy\u1ec3n nhi\u1ec7t t\u1eeb v\u00f9ng nhi\u1ec7t \u0111\u1ed9 cao \u0111\u1ebfn v\u00f9ng nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n, nh\u1eb1m \u0111i\u1ec1u ch\u1ec9nh v\u00e0 t\u1ed1i \u01b0u h\u00f3a to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng nhi\u1ec7t.<\/li>\n<p><\/o1><\/p>\n<h2>\u1ee8ng d\u1ee5ng c\u1ee5 th\u1ec3 trong l\u00f2 ph\u1ea3n \u1ee9ng<\/h2>\n<p>M\u1ed9t s\u1ed1 l\u00f2 ph\u1ea3n \u1ee9ng hi\u1ec7n \u0111\u1ea1i nh\u01b0 l\u00f2 ph\u1ea3n \u1ee9ng n\u01b0\u1edbc \u00e1p l\u1ef1c (PWR) v\u00e0 l\u00f2 ph\u1ea3n \u1ee9ng n\u01b0\u1edbc s\u00f4i (BWR) \u0111\u00e3 \u00e1p d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt tr\u00ean \u0111\u1ec3 n\u00e2ng cao hi\u1ec7u qu\u1ea3 truy\u1ec1n nhi\u1ec7t. V\u00ed d\u1ee5:<\/p>\n<p><o1><\/p>\n<li><b>L\u00f2 PWR:<\/b> S\u1eed d\u1ee5ng \u1ed1ng d\u1eabn nhi\u1ec7t c\u00f3 c\u00e1nh \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t t\u1eeb thanh nhi\u00ean li\u1ec7u sang n\u01b0\u1edbc l\u00e0m m\u00e1t.<\/li>\n<li><b>L\u00f2 BWR:<\/b> S\u1eed d\u1ee5ng thi\u1ebft k\u1ebf b\u00e1nh xe h\u1ed7n h\u1ee3p \u0111\u1ec3 c\u1ea3i thi\u1ec7n d\u00f2ng ch\u1ea3y xo\u00e1y v\u00e0 t\u0103ng c\u01b0\u1eddng hi\u1ec7u su\u1ea5t truy\u1ec1n nhi\u1ec7t.<\/li>\n<p><\/o1><\/p>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>Vi\u1ec7c t\u0103ng c\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t trong l\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n kh\u00f4ng ch\u1ec9 gi\u00fap t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng m\u00e0 c\u00f2n \u0111\u1ea3m b\u1ea3o an to\u00e0n cho to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng. B\u1eb1ng c\u00e1ch nghi\u00ean c\u1ee9u v\u00e0 \u00e1p d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n nhi\u1ec7t ti\u00ean ti\u1ebfn, c\u00e1c nh\u00e0 k\u1ef9 s\u01b0 v\u00e0 khoa h\u1ecdc g\u00f3p ph\u1ea7n quan tr\u1ecdng v\u00e0o ti\u1ebfn b\u1ed9 c\u1ee7a n\u0103ng l\u01b0\u1ee3ng h\u1ea1t nh\u00e2n.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u0103ng c\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t trong l\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n: c\u1ea3i ti\u1ebfn hi\u1ec7u qu\u1ea3 l\u00e0m m\u00e1t, \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng trong quy tr\u00ecnh v\u1eadn h\u00e0nh.<\/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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