{"id":683918,"date":"2024-10-04T02:09:16","date_gmt":"2024-10-04T01:09:16","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=683918"},"modified":"2024-10-04T02:09:16","modified_gmt":"2024-10-04T01:09:16","slug":"7-loai-ky-thuat-tang-cuong-truyen-nhiet","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/7-loai-ky-thuat-tang-cuong-truyen-nhiet\/","title":{"rendered":"7 Lo\u1ea1i K\u1ef9 Thu\u1eadt T\u0103ng C\u01b0\u1eddng Truy\u1ec1n Nhi\u1ec7t"},"content":{"rendered":"

7 lo\u1ea1i k\u1ef9 thu\u1eadt t\u0103ng c\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng nhi\u1ec7t, t\u1ed1i \u01b0u h\u00f3a ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p.<\/p>\n

\"7<\/p>\n

7 Lo\u1ea1i K\u1ef9 Thu\u1eadt T\u0103ng C\u01b0\u1eddng Truy\u1ec1n Nhi\u1ec7t<\/h2>\n

Truy\u1ec1n nhi\u1ec7t l\u00e0 m\u1ed9t quy tr\u00ecnh quan tr\u1ecdng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng k\u1ef9 thu\u1eadt, t\u1eeb l\u00e0m m\u00e1t m\u00e1y m\u00f3c \u0111\u1ebfn h\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed v\u00e0 nhi\u1ec1u h\u01a1n n\u1eefa. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 7 lo\u1ea1i k\u1ef9 thu\u1eadt t\u0103ng c\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t ph\u1ed5 bi\u1ebfn m\u00e0 c\u00e1c k\u1ef9 s\u01b0 th\u01b0\u1eddng s\u1eed d\u1ee5ng:<\/p>\n

<\/p>\n

  • C\u00e1c B\u1ec1 M\u1eb7t C\u00f3 C\u00e1nh<\/b><\/li>\n

    Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c b\u1ec1 m\u1eb7t c\u00f3 c\u00e1nh l\u00e0 m\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t. C\u00e1c c\u00e1nh t\u0103ng di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac v\u1edbi kh\u00f4ng kh\u00ed ho\u1eb7c ch\u1ea5t l\u1ecfng, t\u1eeb \u0111\u00f3 gi\u00fap truy\u1ec1n nhi\u1ec7t hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n

  • Ch\u1ea5t L\u1ecfng Thay \u0110\u1ed5i Pha<\/b><\/li>\n

    K\u1ef9 thu\u1eadt n\u00e0y l\u1ee3i d\u1ee5ng s\u1ef1 thay \u0111\u1ed5i pha c\u1ee7a ch\u1ea5t l\u1ecfng, ch\u1eb3ng h\u1ea1n nh\u01b0 t\u1eeb l\u1ecfng sang kh\u00ed, \u0111\u1ec3 t\u0103ng hi\u1ec7u su\u1ea5t truy\u1ec1n nhi\u1ec7t. M\u1ed9t v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh l\u00e0 h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t b\u1eb1ng n\u01b0\u1edbc, n\u01a1i n\u01b0\u1edbc bay h\u01a1i gi\u00fap h\u1ea5p th\u1ee5 nhi\u1ec7t l\u1edbn.<\/p>\n

  • \u0110i\u1ec7n Tr\u1edf Nhi\u1ec7t<\/b><\/li>\n

    \u0110i\u1ec7n tr\u1edf nhi\u1ec7t l\u00e0 c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed t\u1ea1o ra nhi\u1ec7t khi c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua. Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 h\u1ec7 th\u1ed1ng s\u01b0\u1edfi ho\u1eb7c l\u00e0m \u1ea5m.<\/p>\n

  • Qu\u00e1 Tr\u00ecnh B\u1ee9c X\u1ea1 Nhi\u1ec7t<\/b><\/li>\n

    N\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c truy\u1ec1n qua kh\u00f4ng gian d\u01b0\u1edbi d\u1ea1ng s\u00f3ng \u0111i\u1ec7n t\u1eeb. C\u00e1c k\u1ef9 thu\u1eadt t\u0103ng c\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t b\u1eb1ng b\u1ee9c x\u1ea1 bao g\u1ed3m vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u v\u1edbi kh\u1ea3 n\u0103ng ph\u1ea3n x\u1ea1 cao ho\u1eb7c b\u1ee9c x\u1ea1 m\u1ea1nh.<\/p>\n

  • \u0110\u1ed1i L\u01b0u B\u1eaft Bu\u1ed9c<\/b><\/li>\n

    Qu\u00e1 tr\u00ecnh \u0111\u1ed1i l\u01b0u b\u1eaft bu\u1ed9c s\u1eed d\u1ee5ng c\u00e1c qu\u1ea1t ho\u1eb7c m\u00e1y b\u01a1m \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00f4ng kh\u00ed. \u0110i\u1ec1u n\u00e0y gi\u00fap t\u0103ng t\u1ed1c qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t.<\/p>\n

  • \u0110\u1ed1i L\u01b0u T\u1ef1 Nhi\u00ean<\/b><\/li>\n

    \u0110\u1ed1i l\u01b0u t\u1ef1 nhi\u00ean l\u00e0 khi ch\u1ea5t l\u1ecfng chuy\u1ec3n \u0111\u1ed9ng do s\u1ef1 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 t\u1ef1 nhi\u00ean. K\u1ef9 thu\u1eadt n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u0103ng c\u01b0\u1eddng b\u1eb1ng c\u00e1ch thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng v\u1edbi h\u00ecnh d\u1ea1ng v\u00e0 v\u1eadt li\u1ec7u h\u1ed7 tr\u1ee3 \u0111\u1ed1i l\u01b0u t\u1ed1t h\u01a1n.<\/p>\n

  • C\u00e1c V\u1eadt Li\u1ec7u D\u1eabn Nhi\u1ec7t Cao<\/b><\/li>\n

    S\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u d\u1eabn nhi\u1ec7t cao nh\u01b0 \u0111\u1ed3ng, nh\u00f4m, ho\u1eb7c graphite c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t \u0111\u00e1ng k\u1ec3. Nh\u1eefng v\u1eadt li\u1ec7u n\u00e0y gi\u00fap d\u1eabn nhi\u1ec7t hi\u1ec7u qu\u1ea3 v\u00e0 nhanh ch\u00f3ng t\u1eeb ngu\u1ed3n nhi\u1ec7t \u0111\u1ebfn n\u01a1i c\u1ea7n t\u1ea3n nhi\u1ec7t.<\/p>\n

    <\/u1><\/p>\n

    C\u00f4ng Th\u1ee9c T\u00ednh To\u00e1n Truy\u1ec1n Nhi\u1ec7t<\/h2>\n

    \u0110\u1ec3 t\u00ednh to\u00e1n truy\u1ec1n nhi\u1ec7t, c\u00e1c k\u1ef9 s\u01b0 th\u01b0\u1eddng s\u1eed d\u1ee5ng m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng tr\u00ecnh c\u01a1 b\u1ea3n. M\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng tr\u00ecnh ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0:<\/p>\n

    Q = U * A * \u0394T<\/i><\/p>\n

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

    <\/p>\n

  • Q l\u00e0 l\u01b0\u1ee3ng nhi\u1ec7t truy\u1ec1n \u0111i (Watt)<\/li>\n
  • U l\u00e0 h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t (W\/m2<\/sup>\u00b0C)<\/li>\n
  • A l\u00e0 di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t (m2<\/sup>)<\/li>\n
  • \u0394T l\u00e0 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 (\u00b0C)<\/li>\n

    <\/o1><\/p>\n

    C\u00f4ng th\u1ee9c n\u00e0y cho ph\u00e9p c\u00e1c k\u1ef9 s\u01b0 t\u00ednh to\u00e1n l\u01b0\u1ee3ng nhi\u1ec7t truy\u1ec1n \u0111i qua m\u1ed9t b\u1ec1 m\u1eb7t n\u00e0o \u0111\u00f3, t\u1eeb \u0111\u00f3 c\u1ea3i thi\u1ec7n v\u00e0 t\u1ed1i \u01b0u h\u00f3a c\u00e1c thi\u1ebft k\u1ebf.<\/p>\n","protected":false},"excerpt":{"rendered":"

    7 lo\u1ea1i k\u1ef9 thu\u1eadt t\u0103ng c\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng nhi\u1ec7t, t\u1ed1i \u01b0u h\u00f3a ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p.<\/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":"\n7 Lo\u1ea1i K\u1ef9 Thu\u1eadt T\u0103ng C\u01b0\u1eddng Truy\u1ec1n Nhi\u1ec7t<\/title>\n<meta name=\"description\" content=\"7 lo\u1ea1i k\u1ef9 thu\u1eadt t\u0103ng c\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng nhi\u1ec7t, t\u1ed1i \u01b0u h\u00f3a ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng 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