{"id":700756,"date":"2024-09-18T08:45:46","date_gmt":"2024-09-18T07:45:46","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=700756"},"modified":"2024-09-18T08:45:46","modified_gmt":"2024-09-18T07:45:46","slug":"chat-long-truyen-nhiet-dung-hat-nano","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/chat-long-truyen-nhiet-dung-hat-nano\/","title":{"rendered":"Ch\u1ea5t l\u1ecfng truy\u1ec1n nhi\u1ec7t d\u00f9ng h\u1ea1t nano"},"content":{"rendered":"

Ch\u1ea5t l\u1ecfng truy\u1ec1n nhi\u1ec7t d\u00f9ng h\u1ea1t nano gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 l\u00e0m m\u00e1t v\u00e0 truy\u1ec1n nhi\u1ec7t trong h\u1ec7 th\u1ed1ng nhi\u1ec7t \u0111i\u1ec7n, \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed, v\u00e0 nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p kh\u00e1c.<\/p>\n

\"Ch\u1ea5t<\/p>\n

Ch\u1ea5t l\u1ecfng truy\u1ec1n nhi\u1ec7t d\u00f9ng h\u1ea1t nano<\/h2>\n

Trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t, ch\u1ea5t l\u1ecfng truy\u1ec1n nhi\u1ec7t (hay c\u00f2n g\u1ecdi l\u00e0 ch\u1ea5t l\u1ecfng l\u00e0m m\u00e1t) \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c qu\u1ea3n l\u00fd nhi\u1ec7t \u0111\u1ed9 c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng v\u00e0 thi\u1ebft b\u1ecb. G\u1ea7n \u0111\u00e2y, m\u1ed9t xu h\u01b0\u1edbng m\u1edbi \u0111ang thu h\u00fat s\u1ef1 ch\u00fa \u00fd l\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng ch\u1ea5t l\u1ecfng truy\u1ec1n nhi\u1ec7t c\u00f3 ch\u1ee9a c\u00e1c h\u1ea1t nano. C\u00e1c ch\u1ea5t l\u1ecfng n\u00e0y c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 nanofluids<\/em>.<\/p>\n

Nanofluids l\u00e0 g\u00ec?<\/h2>\n

Nanofluids l\u00e0 s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa ch\u1ea5t l\u1ecfng truy\u1ec1n nhi\u1ec7t truy\u1ec1n th\u1ed1ng v\u00e0 c\u00e1c h\u1ea1t nano c\u00f3 k\u00edch th\u01b0\u1edbc t\u1eeb 1 \u0111\u1ebfn 100 nanomet. Nh\u1eefng h\u1ea1t nano n\u00e0y th\u01b0\u1eddng l\u00e0m t\u1eeb kim lo\u1ea1i, oxit kim lo\u1ea1i ho\u1eb7c c\u00e1c v\u1eadt li\u1ec7u t\u1ed5ng h\u1ee3p. Ch\u00fang c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t c\u1ee7a ch\u1ea5t l\u1ecfng l\u00e0m m\u00e1t do c\u00f3 di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t l\u1edbn v\u00e0 t\u00ednh ch\u1ea5t c\u01a1 b\u1ea3n v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi c\u00e1c h\u1ea1t l\u1edbn h\u01a1n.<\/p>\n

C\u00e1c lo\u1ea1i nanofluids<\/h2>\n

<\/p>\n

  • Nanofluids kim lo\u1ea1i:<\/strong> Bao g\u1ed3m c\u00e1c h\u1ea1t nano l\u00e0m t\u1eeb kim lo\u1ea1i nh\u01b0 \u0111\u1ed3ng (Cu), b\u1ea1c (Ag), v\u00e0 v\u00e0ng (Au).<\/li>\n
  • Nanofluids oxit kim lo\u1ea1i:<\/strong> Bao g\u1ed3m c\u00e1c h\u1ea1t nano l\u00e0m t\u1eeb oxit kim lo\u1ea1i nh\u01b0 oxit nh\u00f4m (Al2<\/sub>O3<\/sub>), oxit \u0111\u1ed3ng (CuO), v\u00e0 oxit titan (TiO2<\/sub>).<\/li>\n
  • Nanofluids cacbon:<\/strong> Bao g\u1ed3m c\u00e1c h\u1ea1t nano cacbon nh\u01b0 \u1ed1ng nano cacbon (CNTs) v\u00e0 graphite.<\/li>\n

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

    L\u1ee3i \u00edch c\u1ee7a nanofluids<\/h2>\n

    So v\u1edbi c\u00e1c ch\u1ea5t l\u1ecfng truy\u1ec1n nhi\u1ec7t truy\u1ec1n th\u1ed1ng, nanofluids c\u00f3 nhi\u1ec1u l\u1ee3i \u00edch:<\/p>\n

    <\/p>\n

  • C\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t:<\/strong> C\u00e1c h\u1ea1t nano gi\u00fap t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t, gi\u00fap h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t hi\u1ec7u qu\u1ea3 h\u01a1n.<\/li>\n
  • Kh\u1ea3 n\u0103ng truy\u1ec1n nhi\u1ec7t t\u1ed1t h\u01a1n:<\/strong> Do s\u1ef1 ph\u00e2n t\u00e1n c\u1ee7a c\u00e1c h\u1ea1t nano, kh\u1ea3 n\u0103ng truy\u1ec1n nhi\u1ec7t c\u1ee7a nanofluids \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n, gi\u00fap gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb.<\/li>\n
  • \u0110\u1ed9 nh\u1edbt th\u1ea5p h\u01a1n:<\/strong> M\u1ed9t s\u1ed1 nanofluids c\u00f3 \u0111\u1ed9 nh\u1edbt th\u1ea5p h\u01a1n so v\u1edbi c\u00e1c ch\u1ea5t l\u1ecfng truy\u1ec1n th\u1ed1ng, gi\u00fap d\u1ec5 d\u00e0ng h\u01a1n trong vi\u1ec7c b\u01a1m v\u00e0 tu\u1ea7n ho\u00e0n ch\u1ea5t l\u1ecfng.<\/li>\n
  • \u1ee8ng d\u1ee5ng linh ho\u1ea1t:<\/strong> Nanofluids c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u01b0 \u0111i\u1ec7n t\u1eed, \u00f4 t\u00f4, n\u0103ng l\u01b0\u1ee3ng, v\u00e0 y t\u1ebf.<\/li>\n

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

    Th\u00e1ch th\u1ee9c khi s\u1eed d\u1ee5ng nanofluids<\/h2>\n

    M\u1eb7c d\u00f9 nanofluids c\u00f3 nhi\u1ec1u l\u1ee3i \u00edch nh\u01b0ng c\u0169ng c\u00f3 nh\u1eefng th\u00e1ch th\u1ee9c khi s\u1eed d\u1ee5ng:<\/p>\n

    <\/p>\n

  • Chi ph\u00ed cao:<\/strong> Vi\u1ec7c s\u1ea3n xu\u1ea5t c\u00e1c h\u1ea1t nano v\u00e0 ph\u00e2n t\u00e1n ch\u00fang trong ch\u1ea5t l\u1ecfng c\u00f3 th\u1ec3 \u0111\u1eaft \u0111\u1ecf h\u01a1n so v\u1edbi c\u00e1c ch\u1ea5t l\u1ecfng truy\u1ec1n th\u1ed1ng.<\/li>\n
  • T\u00ednh \u1ed5n \u0111\u1ecbnh:<\/strong> \u0110\u1ea3m b\u1ea3o s\u1ef1 ph\u00e2n t\u00e1n \u0111\u1ec1u \u0111\u1eb7n c\u1ee7a c\u00e1c h\u1ea1t nano trong ch\u1ea5t l\u1ecfng m\u00e0 kh\u00f4ng k\u1ebft t\u1ee5 l\u00e0 m\u1ed9t th\u00e1ch th\u1ee9c k\u1ef9 thu\u1eadt.<\/li>\n
  • \u0102n m\u00f2n v\u00e0 m\u00e0i m\u00f2n:<\/strong> M\u1ed9t s\u1ed1 nanofluids c\u00f3 th\u1ec3 g\u00e2y \u0103n m\u00f2n ho\u1eb7c m\u00e0i m\u00f2n c\u00e1c v\u1eadt li\u1ec7u trong h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t.<\/li>\n

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

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

    Ch\u1ea5t l\u1ecfng truy\u1ec1n nhi\u1ec7t d\u00f9ng h\u1ea1t nano h\u1ee9a h\u1eb9n nhi\u1ec1u ti\u1ec1m n\u0103ng trong vi\u1ec7c c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 l\u00e0m m\u00e1t v\u00e0 truy\u1ec1n nhi\u1ec7t c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng k\u1ef9 thu\u1eadt. Tuy nhi\u00ean, c\u00e2u chuy\u1ec7n v\u1eabn c\u00f2n nh\u1eefng th\u00e1ch th\u1ee9c c\u1ea7n \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft \u0111\u1ec3 c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c ti\u1ec5n tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn h\u01a1n. D\u00f9 v\u1eady, nanofluids v\u1eabn l\u00e0 m\u1ed9t l\u0129nh v\u1ef1c nghi\u00ean c\u1ee9u v\u00e0 \u1ee9ng d\u1ee5ng \u0111\u1ea7y h\u1ee9a h\u1eb9n trong t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Ch\u1ea5t l\u1ecfng truy\u1ec1n nhi\u1ec7t d\u00f9ng h\u1ea1t nano gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 l\u00e0m m\u00e1t v\u00e0 truy\u1ec1n nhi\u1ec7t trong h\u1ec7 th\u1ed1ng nhi\u1ec7t \u0111i\u1ec7n, \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed, v\u00e0 nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p kh\u00e1c.<\/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":"\nCh\u1ea5t l\u1ecfng truy\u1ec1n nhi\u1ec7t d\u00f9ng h\u1ea1t nano<\/title>\n<meta name=\"description\" content=\"Ch\u1ea5t l\u1ecfng truy\u1ec1n nhi\u1ec7t d\u00f9ng h\u1ea1t nano gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 l\u00e0m m\u00e1t v\u00e0 truy\u1ec1n nhi\u1ec7t trong h\u1ec7 th\u1ed1ng nhi\u1ec7t \u0111i\u1ec7n, \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed, v\u00e0 nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p kh\u00e1c.\" 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