{"id":709591,"date":"2024-10-28T11:47:40","date_gmt":"2024-10-28T10:47:40","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=709591"},"modified":"2024-10-28T11:47:40","modified_gmt":"2024-10-28T10:47:40","slug":"buc-xa-nhiet-trong-ky-thuat-phong-chay-chua-chay","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/buc-xa-nhiet-trong-ky-thuat-phong-chay-chua-chay\/","title":{"rendered":"B\u1ee9c x\u1ea1 nhi\u1ec7t trong k\u1ef9 thu\u1eadt ph\u00f2ng ch\u00e1y ch\u1eefa ch\u00e1y"},"content":{"rendered":"

B\u1ee9c x\u1ea1 nhi\u1ec7t trong k\u1ef9 thu\u1eadt ph\u00f2ng ch\u00e1y ch\u1eefa ch\u00e1y: Hi\u1ec3u v\u1ec1 b\u1ee9c x\u1ea1 nhi\u1ec7t v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 trong ph\u00f2ng ng\u1eeba v\u00e0 gi\u1ea3m thi\u1ec3u r\u1ee7i ro ch\u00e1y n\u1ed5.<\/p>\n

\"B\u1ee9c<\/p>\n

B\u1ee9c x\u1ea1 nhi\u1ec7t trong k\u1ef9 thu\u1eadt ph\u00f2ng ch\u00e1y ch\u1eefa ch\u00e1y<\/h2>\n

B\u1ee9c x\u1ea1 nhi\u1ec7t l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh chuy\u1ec3n giao nhi\u1ec7t n\u0103ng b\u1eb1ng s\u00f3ng \u0111i\u1ec7n t\u1eeb v\u00e0 kh\u00f4ng c\u1ea7n m\u00f4i tr\u01b0\u1eddng v\u1eadt ch\u1ea5t \u0111\u1ec3 lan truy\u1ec1n. Trong k\u1ef9 thu\u1eadt ph\u00f2ng ch\u00e1y ch\u1eefa ch\u00e1y, b\u1ee9c x\u1ea1 nhi\u1ec7t \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c ph\u00e1t hi\u1ec7n, ng\u0103n ch\u1eb7n v\u00e0 d\u1eadp t\u1eaft \u0111\u00e1m ch\u00e1y.<\/p>\n

Nguy\u00ean L\u00fd C\u1ee7a B\u1ee9c X\u1ea1 Nhi\u1ec7t<\/h2>\n

B\u1ee9c x\u1ea1 nhi\u1ec7t di\u1ec5n ra khi m\u1ed9t v\u1eadt th\u1ec3 n\u00f3ng ph\u00e1t ra n\u0103ng l\u01b0\u1ee3ng d\u01b0\u1edbi d\u1ea1ng s\u00f3ng b\u1ee9c x\u1ea1. Qu\u00e1 tr\u00ecnh n\u00e0y tu\u00e2n theo \u0111\u1ecbnh lu\u1eadt Stefan-Boltzmann, theo \u0111\u00f3 n\u0103ng l\u01b0\u1ee3ng b\u1ee9c x\u1ea1 \\((E)\\) c\u1ee7a m\u1ed9t v\u1eadt th\u1ec3 t\u1ec9 l\u1ec7 thu\u1eadn v\u1edbi l\u0169y th\u1eeba b\u1ed1n c\u1ee7a nhi\u1ec7t \u0111\u1ed9 tuy\u1ec7t \u0111\u1ed1i \\((T)\\) c\u1ee7a n\u00f3:<\/p>\n

E = \u03c3T4<\/sup><\/b><\/p>\n

Trong \u0111\u00f3:<\/p>\n

    \n
  1. E<\/b> l\u00e0 n\u0103ng l\u01b0\u1ee3ng b\u1ee9c x\u1ea1.<\/li>\n
  2. \u03c3<\/b> l\u00e0 h\u1eb1ng s\u1ed1 Stefan-Boltzmann \\((5.67 \\times 10^{-8} W\/m^2K^4)\\).<\/li>\n
  3. T<\/b> l\u00e0 nhi\u1ec7t \u0111\u1ed9 tuy\u1ec7t \u0111\u1ed1i c\u1ee7a v\u1eadt th\u1ec3 (t\u00ednh b\u1eb1ng Kelvin).<\/li>\n<\/ol>\n

    Khi m\u1ed9t \u0111\u00e1m ch\u00e1y x\u1ea3y ra, nhi\u1ec7t \u0111\u1ed9 c\u1ee7a ng\u1ecdn l\u1eeda r\u1ea5t cao, d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e1t ra l\u01b0\u1ee3ng l\u1edbn n\u0103ng l\u01b0\u1ee3ng b\u1ee9c x\u1ea1 nhi\u1ec7t.<\/p>\n

    \u1ee8ng D\u1ee5ng C\u1ee7a B\u1ee9c X\u1ea1 Nhi\u1ec7t Trong Ph\u00f2ng Ch\u00e1y Ch\u1eefa Ch\u00e1y<\/h2>\n
      \n
    • Ph\u00e1t Hi\u1ec7n Ch\u00e1y:<\/b> H\u1ec7 th\u1ed1ng c\u1ea3m bi\u1ebfn nhi\u1ec7t, nh\u01b0 c\u1ea3m bi\u1ebfn h\u1ed3ng ngo\u1ea1i, c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n s\u1ef1 gia t\u0103ng nhanh ch\u00f3ng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 nh\u1edd b\u1ee9c x\u1ea1 nhi\u1ec7t t\u1eeb \u0111\u00e1m ch\u00e1y.<\/li>\n
    • Ng\u0103n Ch\u1eb7n Ch\u00e1y Lan:<\/b> Hi\u1ec3u bi\u1ebft v\u1ec1 b\u1ee9c x\u1ea1 nhi\u1ec7t gi\u00fap thi\u1ebft k\u1ebf c\u00e1c v\u1eadt li\u1ec7u v\u00e0 c\u1ea5u tr\u00fac c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t cao, gi\u1ea3m nguy c\u01a1 l\u1eeda lan truy\u1ec1n qua b\u1ee9c x\u1ea1 nhi\u1ec7t.<\/li>\n
    • D\u1eadp T\u1eaft \u0110\u00e1m Ch\u00e1y:<\/b> Trong qu\u00e1 tr\u00ecnh ch\u1eefa ch\u00e1y, vi\u1ec7c t\u00ednh to\u00e1n v\u00e0 d\u1ef1 \u0111o\u00e1n t\u00e1c \u0111\u1ed9ng c\u1ee7a b\u1ee9c x\u1ea1 nhi\u1ec7t gi\u00fap c\u00e1c l\u00ednh c\u1ee9u h\u1ecfa l\u1ef1a ch\u1ecdn chi\u1ebfn l\u01b0\u1ee3c th\u00edch h\u1ee3p \u0111\u1ec3 h\u1ea1n ch\u1ebf nguy c\u01a1 cho ng\u01b0\u1eddi v\u00e0 t\u00e0i s\u1ea3n.<\/li>\n<\/ul>\n

      C\u00e1c Bi\u1ec7n Ph\u00e1p B\u1ea3o V\u1ec7 Tr\u01b0\u1edbc B\u1ee9c X\u1ea1 Nhi\u1ec7t<\/h2>\n
        \n
      1. Trang Ph\u1ee5c Chuy\u00ean D\u1ee5ng:<\/b> L\u00ednh c\u1ee9u h\u1ecfa s\u1eed d\u1ee5ng trang ph\u1ee5c b\u1ea3o v\u1ec7 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 b\u1ee9c x\u1ea1 nhi\u1ec7t m\u1ea1nh.<\/li>\n
      2. M\u00e0ng Ph\u1ea3n X\u1ea1 Nhi\u1ec7t:<\/b> T\u01b0\u1eddng ch\u1ecbu l\u1eeda v\u00e0 v\u00e1ch ng\u0103n b\u1eb1ng v\u1eadt li\u1ec7u ph\u1ea3n x\u1ea1 nhi\u1ec7t gi\u00fap gi\u1ea3m s\u1ef1 lan truy\u1ec1n nhi\u1ec7t \u0111\u1ed9 t\u1eeb \u0111\u00e1m ch\u00e1y.<\/li>\n
      3. Kho\u1ea3ng C\u00e1ch An To\u00e0n:<\/b> Khi thi\u1ebft k\u1ebf c\u00e1c t\u00f2a nh\u00e0 v\u00e0 c\u01a1 s\u1edf c\u00f4ng nghi\u1ec7p, vi\u1ec7c duy tr\u00ec kho\u1ea3ng c\u00e1ch an to\u00e0n gi\u1eefa c\u00e1c khu v\u1ef1c quan tr\u1ecdng v\u00e0 c\u00e1c ngu\u1ed3n nguy c\u01a1 ch\u00e1y l\u1edbn c\u00f3 th\u1ec3 gi\u00fap h\u1ea1n ch\u1ebf t\u00e1c \u0111\u1ed9ng c\u1ee7a b\u1ee9c x\u1ea1 nhi\u1ec7t.<\/li>\n<\/ol>\n

        B\u1ee9c x\u1ea1 nhi\u1ec7t l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng c\u1ea7n \u0111\u01b0\u1ee3c xem x\u00e9t trong ph\u00f2ng ch\u00e1y ch\u1eefa ch\u00e1y. Hi\u1ec3u bi\u1ebft v\u1ec1 n\u00f3 kh\u00f4ng ch\u1ec9 gi\u00fap c\u1ea3i thi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba v\u00e0 chu\u1ea9n b\u1ecb, m\u00e0 c\u00f2n t\u0103ng hi\u1ec7u qu\u1ea3 trong c\u00f4ng t\u00e1c c\u1ee9u h\u1ed9 v\u00e0 gi\u1ea3m thi\u1ec3u thi\u1ec7t h\u1ea1i do h\u1ecfa ho\u1ea1n g\u00e2y ra.<\/p>\n","protected":false},"excerpt":{"rendered":"

        B\u1ee9c x\u1ea1 nhi\u1ec7t trong k\u1ef9 thu\u1eadt ph\u00f2ng ch\u00e1y ch\u1eefa ch\u00e1y: Hi\u1ec3u v\u1ec1 b\u1ee9c x\u1ea1 nhi\u1ec7t v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 trong ph\u00f2ng ng\u1eeba v\u00e0 gi\u1ea3m thi\u1ec3u r\u1ee7i ro ch\u00e1y n\u1ed5.<\/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":"\nB\u1ee9c x\u1ea1 nhi\u1ec7t trong k\u1ef9 thu\u1eadt ph\u00f2ng ch\u00e1y ch\u1eefa ch\u00e1y<\/title>\n<meta name=\"description\" content=\"B\u1ee9c x\u1ea1 nhi\u1ec7t trong k\u1ef9 thu\u1eadt ph\u00f2ng ch\u00e1y ch\u1eefa ch\u00e1y: Hi\u1ec3u v\u1ec1 b\u1ee9c x\u1ea1 nhi\u1ec7t v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 trong ph\u00f2ng ng\u1eeba v\u00e0 gi\u1ea3m thi\u1ec3u r\u1ee7i ro ch\u00e1y n\u1ed5.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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