{"id":676669,"date":"2024-10-01T21:48:41","date_gmt":"2024-10-01T20:48:41","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=676669"},"modified":"2024-10-01T21:48:41","modified_gmt":"2024-10-01T20:48:41","slug":"cach-may-do-he-so-truyen-nhiet-do-cach-nhiet-nhu-the-nao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/cach-may-do-he-so-truyen-nhiet-do-cach-nhiet-nhu-the-nao\/","title":{"rendered":"C\u00e1ch m\u00e1y \u0111o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t \u0111o c\u00e1ch nhi\u1ec7t nh\u01b0 th\u1ebf n\u00e0o"},"content":{"rendered":"

C\u00e1ch m\u00e1y \u0111o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t \u0111o c\u00e1ch nhi\u1ec7t gi\u00fap \u0111o l\u01b0\u1eddng hi\u1ec7u qu\u1ea3 c\u00e1ch nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u, t\u1eeb \u0111\u00f3 \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/p>\n

\"C\u00e1ch<\/p>\n

C\u00e1ch M\u00e1y \u0110o H\u1ec7 S\u1ed1 Truy\u1ec1n Nhi\u1ec7t \u0110o C\u00e1ch Nhi\u1ec7t Nh\u01b0 Th\u1ebf N\u00e0o<\/h2>\n

C\u00e1ch nhi\u1ec7t l\u00e0 qu\u00e1 tr\u00ecnh ng\u0103n c\u1ea3n s\u1ef1 truy\u1ec1n nhi\u1ec7t gi\u1eefa hai v\u00f9ng c\u00f3 nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau. \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng, t\u1eeb c\u00e1c t\u00f2a nh\u00e0 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed. \u0110\u1ec3 \u0111\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 c\u1ee7a v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t, ch\u00fang ta c\u1ea7n \u0111o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t c\u1ee7a ch\u00fang. M\u1ed9t trong nh\u1eefng thi\u1ebft b\u1ecb h\u1ed7 tr\u1ee3 vi\u1ec7c n\u00e0y l\u00e0 m\u00e1y \u0111o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t.<\/p>\n

Nguy\u00ean L\u00fd Ho\u1ea1t \u0110\u1ed9ng<\/h2>\n

M\u00e1y \u0111o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd truy\u1ec1n nhi\u1ec7t qua v\u1eadt li\u1ec7u. Khi m\u1ed9t v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t \u0111\u01b0\u1ee3c \u0111\u1eb7t v\u00e0o m\u00e1y, nhi\u1ec7t l\u01b0\u1ee3ng s\u1ebd \u0111\u01b0\u1ee3c truy\u1ec1n t\u1eeb b\u00ean n\u00f3ng sang b\u00ean l\u1ea1nh v\u00e0 m\u00e1y s\u1ebd \u0111o l\u01b0\u1ee3ng nhi\u1ec7t n\u00e0y. H\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t, hay h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t (k), \u0111\u01b0\u1ee3c t\u00ednh d\u1ef1a tr\u00ean c\u00f4ng th\u1ee9c:<\/p>\n

\\[
\nQ = k \\cdot A \\cdot \\frac{(T_h – T_c)}{d}
\n\\]\n

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

<\/p>\n

  • Q: L\u01b0\u1ee3ng nhi\u1ec7t truy\u1ec1n qua v\u1eadt li\u1ec7u (W)<\/li>\n
  • k: H\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t (W\/m\u00b7K)<\/li>\n
  • A: Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t truy\u1ec1n nhi\u1ec7t (m2<\/sup>)<\/li>\n
  • (Th<\/sub> – Tc<\/sub>): Hi\u1ec7u s\u1ed1 nhi\u1ec7t \u0111\u1ed9 gi\u1eefa hai b\u00ean (K)<\/li>\n
  • d: \u0110\u1ed9 d\u00e0y c\u1ee7a v\u1eadt li\u1ec7u (m)<\/li>\n

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

    C\u00e1c Ph\u01b0\u01a1ng Ph\u00e1p \u0110o H\u1ec7 S\u1ed1 Truy\u1ec1n Nhi\u1ec7t<\/h2>\n
      \n
    1. \n

      Ph\u01b0\u01a1ng Ph\u00e1p \u0110o Tr\u1ef1c Ti\u1ebfp:<\/b> Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111o tr\u1ef1c ti\u1ebfp s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 qua v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t. Th\u00f4ng th\u01b0\u1eddng, m\u1ed9t t\u1ea5m v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u1eb7t gi\u1eefa hai m\u1eb7t ph\u1eb3ng c\u00f3 nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau v\u00e0 nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c \u0111o \u1edf c\u1ea3 hai m\u1eb7t c\u1ee7a t\u1ea5m v\u1eadt li\u1ec7u.<\/p>\n<\/li>\n

    2. \n

      Ph\u01b0\u01a1ng Ph\u00e1p \u0110o Gi\u00e1n Ti\u1ebfp:<\/b> Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y s\u1eed d\u1ee5ng c\u00e1c c\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111\u1ed9 v\u00e0 l\u01b0\u1ee3ng nhi\u1ec7t \u0111\u1ec3 t\u00ednh to\u00e1n h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t d\u1ef1a tr\u00ean c\u00e1c th\u00f4ng s\u1ed1 thu th\u1eadp \u0111\u01b0\u1ee3c.<\/p>\n<\/li>\n<\/ol>\n

      \u1ee8ng D\u1ee5ng Trong Cu\u1ed9c S\u1ed1ng<\/h2>\n

      M\u00e1y \u0111o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf:<\/p>\n

      <\/p>\n

    3. Trong X\u00e2y D\u1ef1ng:<\/b> \u0110o hi\u1ec7u qu\u1ea3 c\u00e1ch nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng nh\u01b0 g\u1ea1ch, b\u00ea t\u00f4ng, v\u00e0 c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t kh\u00e1c.<\/li>\n
    4. Trong C\u00f4ng Nghi\u1ec7p \u0110i\u1ec7n T\u1eed:<\/b> \u0110\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed kh\u00f4ng b\u1ecb qu\u00e1 nhi\u1ec7t b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t ph\u00f9 h\u1ee3p.<\/li>\n
    5. Trong L\u0129nh V\u1ef1c N\u0103ng L\u01b0\u1ee3ng:<\/b> T\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng s\u01b0\u1edfi \u1ea5m v\u00e0 l\u00e0m m\u00e1t.<\/li>\n

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

      K\u1ebft Lu\u1eadn<\/h2>\n

      M\u00e1y \u0111o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t l\u00e0 c\u00f4ng c\u1ee5 quan tr\u1ecdng gi\u00fap ch\u00fang ta \u0111\u00e1nh gi\u00e1 v\u00e0 l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t hi\u1ec7u qu\u1ea3. Vi\u1ec7c s\u1eed d\u1ee5ng \u0111\u00fang lo\u1ea1i v\u1eadt li\u1ec7u c\u00e1ch nhi\u1ec7t kh\u00f4ng ch\u1ec9 gi\u00fap ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng m\u00e0 c\u00f2n b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng v\u00e0 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng cu\u1ed9c s\u1ed1ng.<\/p>\n","protected":false},"excerpt":{"rendered":"

      C\u00e1ch m\u00e1y \u0111o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t \u0111o c\u00e1ch nhi\u1ec7t gi\u00fap \u0111o l\u01b0\u1eddng hi\u1ec7u qu\u1ea3 c\u00e1ch nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u, t\u1eeb \u0111\u00f3 \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/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":"\nC\u00e1ch m\u00e1y \u0111o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t \u0111o c\u00e1ch nhi\u1ec7t nh\u01b0 th\u1ebf n\u00e0o<\/title>\n<meta name=\"description\" content=\"C\u00e1ch m\u00e1y \u0111o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t \u0111o c\u00e1ch nhi\u1ec7t gi\u00fap \u0111o l\u01b0\u1eddng hi\u1ec7u qu\u1ea3 c\u00e1ch nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u, t\u1eeb \u0111\u00f3 \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.thermal-engineering.org\/vi\/cach-may-do-he-so-truyen-nhiet-do-cach-nhiet-nhu-the-nao\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u00e1ch m\u00e1y \u0111o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t \u0111o c\u00e1ch nhi\u1ec7t nh\u01b0 th\u1ebf n\u00e0o\" \/>\n<meta property=\"og:description\" content=\"C\u00e1ch m\u00e1y \u0111o h\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t \u0111o c\u00e1ch nhi\u1ec7t gi\u00fap \u0111o l\u01b0\u1eddng hi\u1ec7u qu\u1ea3 c\u00e1ch nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u, t\u1eeb \u0111\u00f3 \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed.\" \/>\n<meta property=\"og:url\" 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