{"id":700046,"date":"2024-07-27T15:20:54","date_gmt":"2024-07-27T14:20:54","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=700046"},"modified":"2024-07-27T15:20:54","modified_gmt":"2024-07-27T14:20:54","slug":"cai-thien-truyen-nhiet-soi","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/cai-thien-truyen-nhiet-soi\/","title":{"rendered":"C\u1ea3i thi\u1ec7n truy\u1ec1n nhi\u1ec7t s\u00f4i"},"content":{"rendered":"

C\u1ea3i thi\u1ec7n truy\u1ec1n nhi\u1ec7t s\u00f4i b\u1eb1ng c\u00e1ch \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 m\u1edbi v\u00e0 v\u1eadt li\u1ec7u ti\u00ean ti\u1ebfn gi\u00fap t\u0103ng hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng trong h\u1ec7 th\u1ed1ng nhi\u1ec7t.<\/p>\n

\"C\u1ea3i<\/p>\n

C\u1ea3i Thi\u1ec7n Truy\u1ec1n Nhi\u1ec7t S\u00f4i<\/h2>\n

Truy\u1ec1n nhi\u1ec7t s\u00f4i l\u00e0 qu\u00e1 tr\u00ecnh quan tr\u1ecdng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p nh\u01b0 l\u00f2 h\u01a1i, trao \u0111\u1ed5i nhi\u1ec7t v\u00e0 h\u1ec7 th\u1ed1ng l\u00e0m l\u1ea1nh. Hi\u1ec3u r\u00f5 v\u00e0 c\u1ea3i thi\u1ec7n qu\u00e1 tr\u00ecnh n\u00e0y kh\u00f4ng ch\u1ec9 gi\u00fap t\u0103ng hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng m\u00e0 c\u00f2n gi\u1ea3m chi ph\u00ed v\u1eadn h\u00e0nh. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 c\u00e1ch c\u1ea3i thi\u1ec7n truy\u1ec1n nhi\u1ec7t s\u00f4i:<\/p>\n

<\/p>\n

  • T\u0103ng di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t trao \u0111\u1ed5i nhi\u1ec7t<\/li>\n
  • S\u1eed d\u1ee5ng c\u00e1c ch\u1ea5t ph\u1ee5 gia c\u1ea3i thi\u1ec7n qu\u00e1 tr\u00ecnh s\u00f4i<\/li>\n
  • T\u1ed1i \u01b0u h\u00f3a \u0111i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng<\/li>\n

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

    1. T\u0103ng Di\u1ec7n T\u00edch B\u1ec1 M\u1eb7t Trao \u0110\u1ed5i Nhi\u1ec7t<\/h2>\n

    Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t trao \u0111\u1ed5i nhi\u1ec7t \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t truy\u1ec1n nhi\u1ec7t. C\u00e0ng nhi\u1ec1u di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac gi\u1eefa ch\u1ea5t l\u1ecfng v\u00e0 b\u1ec1 m\u1eb7t nhi\u1ec7t, qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t c\u00e0ng nhanh ch\u00f3ng. C\u00f3 m\u1ed9t s\u1ed1 c\u00e1ch \u0111\u1ec3 t\u0103ng di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t:<\/p>\n

    <\/p>\n

  • S\u1eed d\u1ee5ng b\u1ec1 m\u1eb7t c\u00f3 c\u1ea5u tr\u00fac:<\/b> B\u1ec1 m\u1eb7t c\u00f3 c\u00e1c r\u00e3nh, g\u00e2n ho\u1eb7c b\u1ec1 m\u1eb7t m\u1edf r\u1ed9ng c\u00f3 th\u1ec3 t\u0103ng di\u1ec7n t\u00edch ti\u1ebfp x\u00fac.<\/li>\n
  • \u1ed0ng nhi\u1ec7t:<\/b> \u1ed0ng nhi\u1ec7t c\u00f3 c\u00e1nh ho\u1eb7c \u1ed1ng nhi\u1ec7t k\u1ebft h\u1ee3p v\u1edbi c\u00e1c ph\u1ea7n t\u1eed vi m\u00f4 c\u0169ng c\u00f3 th\u1ec3 t\u0103ng di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t.<\/li>\n

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

    2. S\u1eed D\u1ee5ng C\u00e1c Ch\u1ea5t Ph\u1ee5 Gia C\u1ea3i Thi\u1ec7n Qu\u00e1 Tr\u00ecnh S\u00f4i<\/h2>\n

    Ch\u1ea5t ph\u1ee5 gia c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m s\u1ee9c c\u0103ng b\u1ec1 m\u1eb7t c\u1ee7a ch\u1ea5t l\u1ecfng, t\u1eeb \u0111\u00f3 l\u00e0m t\u0103ng kh\u1ea3 n\u0103ng t\u1ea1o bong b\u00f3ng nh\u1ecf v\u00e0 ph\u00e2n t\u00e1n ch\u00fang ra nhanh ch\u00f3ng. C\u00e1c ch\u1ea5t ph\u1ee5 gia ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n

    <\/p>\n

  • Ch\u1ea5t ho\u1ea1t \u0111\u1ed9ng b\u1ec1 m\u1eb7t:<\/b> C\u00e1c ch\u1ea5t nh\u01b0 Tween-20 ho\u1eb7c SDS c\u00f3 th\u1ec3 gi\u1ea3m s\u1ee9c c\u0103ng b\u1ec1 m\u1eb7t.<\/li>\n
  • Nanoparticles:<\/b> C\u00e1c h\u1ea1t nano c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n qu\u00e1 tr\u00ecnh nucleation, gi\u00fap t\u1ea1o ra nhi\u1ec1u bong b\u00f3ng h\u01a1n.<\/li>\n

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

    3. T\u1ed1i \u01afu H\u00f3a \u0110i\u1ec1u Ki\u1ec7n Ho\u1ea1t \u0110\u1ed9ng<\/h2>\n

    \u0110i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng bao g\u1ed3m nhi\u1ec7t \u0111\u1ed9, \u00e1p su\u1ea5t v\u00e0 l\u01b0u l\u01b0\u1ee3ng ch\u1ea5t l\u1ecfng c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t s\u00f4i. M\u1ed9t s\u1ed1 c\u00e1ch t\u1ed1i \u01b0u h\u00f3a bao g\u1ed3m:<\/p>\n

    <\/p>\n

  • \u0110i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t:<\/b> T\u1ea1o ra m\u1ed9t kho\u1ea3ng nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t t\u1ed1i \u01b0u \u0111\u1ec3 qu\u00e1 tr\u00ecnh s\u00f4i x\u1ea3y ra nhanh ch\u00f3ng v\u00e0 hi\u1ec7u qu\u1ea3.<\/li>\n
  • Qu\u1ea3n l\u00fd l\u01b0u l\u01b0\u1ee3ng ch\u1ea5t l\u1ecfng:<\/b> \u0110i\u1ec1u ch\u1ec9nh l\u01b0u l\u01b0\u1ee3ng sao cho ph\u00f9 h\u1ee3p \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u1ed1c \u0111\u1ed9 s\u00f4i v\u00e0 truy\u1ec1n nhi\u1ec7t \u0111\u1ea1t m\u1ee9c t\u1ed1i \u01b0u.<\/li>\n

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

    Trong qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t s\u00f4i, c\u00e1c th\u00f4ng s\u1ed1 nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc v\u00e0 kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u c\u0169ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng. M\u1ed9t c\u00e1ch \u0111\u1ec3 t\u00ednh to\u00e1n hi\u1ec7u su\u1ea5t truy\u1ec1n nhi\u1ec7t l\u00e0 s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng tr\u00ecnh nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc c\u01a1 b\u1ea3n:<\/p>\n

    Ph\u01b0\u01a1ng tr\u00ecnh n\u0103ng l\u01b0\u1ee3ng:<\/p>\n

    Q = m * c_p * \\(\\Delta T\\)<\/p>\n

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

    <\/p>\n

  • Q: Nhi\u1ec7t l\u01b0\u1ee3ng (J)<\/li>\n
  • m: Kh\u1ed1i l\u01b0\u1ee3ng ch\u1ea5t l\u1ecfng (kg)<\/li>\n
  • c_p: Nhi\u1ec7t dung ri\u00eang (J\/kg\u00b7K)<\/li>\n
  • \\(\\Delta T\\): \u0110\u1ed9 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 (K)<\/li>\n

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

    B\u1eb1ng c\u00e1ch t\u1ed1i \u01b0u h\u00f3a c\u00e1c y\u1ebfu t\u1ed1 tr\u00ean, ch\u00fang ta c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t truy\u1ec1n nhi\u1ec7t s\u00f4i m\u1ed9t c\u00e1ch \u0111\u00e1ng k\u1ec3, t\u1eeb \u0111\u00f3 n\u00e2ng cao hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng v\u00e0 gi\u1ea3m chi ph\u00ed ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng c\u00f4ng nghi\u1ec7p.<\/p>\n","protected":false},"excerpt":{"rendered":"

    C\u1ea3i thi\u1ec7n truy\u1ec1n nhi\u1ec7t s\u00f4i b\u1eb1ng c\u00e1ch \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 m\u1edbi v\u00e0 v\u1eadt li\u1ec7u ti\u00ean ti\u1ebfn gi\u00fap t\u0103ng hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng trong h\u1ec7 th\u1ed1ng nhi\u1ec7t.<\/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\u1ea3i thi\u1ec7n truy\u1ec1n nhi\u1ec7t s\u00f4i<\/title>\n<meta name=\"description\" content=\"C\u1ea3i thi\u1ec7n truy\u1ec1n nhi\u1ec7t s\u00f4i b\u1eb1ng c\u00e1ch \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 m\u1edbi v\u00e0 v\u1eadt li\u1ec7u ti\u00ean ti\u1ebfn gi\u00fap t\u0103ng hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng trong h\u1ec7 th\u1ed1ng nhi\u1ec7t.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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