{"id":689537,"date":"2024-11-30T11:45:10","date_gmt":"2024-11-30T10:45:10","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=689537"},"modified":"2024-11-30T11:45:10","modified_gmt":"2024-11-30T10:45:10","slug":"chat-long-nano-tang-cuong-dan-nhiet-ung-dung","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/chat-long-nano-tang-cuong-dan-nhiet-ung-dung\/","title":{"rendered":"Ch\u1ea5t l\u1ecfng nano | T\u0103ng c\u01b0\u1eddng d\u1eabn nhi\u1ec7t &#038; \u1ee8ng d\u1ee5ng"},"content":{"rendered":"<p class=\"sidekick\">Ch\u1ea5t l\u1ecfng nano: T\u00ecm hi\u1ec3u c\u00e1ch ch\u1ea5t l\u1ecfng nano t\u0103ng c\u01b0\u1eddng d\u1eabn nhi\u1ec7t v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng trong c\u00f4ng nghi\u1ec7p v\u00e0 \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/chat_long_nano_tang_cuong_dan_nhiet_ung_dung.png\" alt=\"Ch\u1ea5t l\u1ecfng nano | T\u0103ng c\u01b0\u1eddng d\u1eabn nhi\u1ec7t &#038; \u1ee8ng d\u1ee5ng\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>Ch\u1ea5t l\u1ecfng nano | T\u0103ng c\u01b0\u1eddng d\u1eabn nhi\u1ec7t &#038; \u1ee8ng d\u1ee5ng<\/h2>\n<p>Ch\u1ea5t l\u1ecfng nano, hay c\u00f2n g\u1ecdi l\u00e0 nanofluids, l\u00e0 thu\u1eadt ng\u1eef ch\u1ec9 c\u00e1c lo\u1ea1i ch\u1ea5t l\u1ecfng c\u00f3 ch\u1ee9a c\u00e1c h\u1ea1t nano (k\u00edch th\u01b0\u1edbc t\u1eeb 1-100 nanometer) ph\u00e2n t\u00e1n \u0111\u1ec1u trong m\u00f4i tr\u01b0\u1eddng ch\u1ea5t l\u1ecfng. Nh\u1eefng h\u1ea1t nano n\u00e0y c\u00f3 th\u1ec3 l\u00e0m t\u0103ng c\u01b0\u1eddng t\u00ednh ch\u1ea5t d\u1eabn nhi\u1ec7t c\u1ee7a ch\u1ea5t l\u1ecfng, gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng trao \u0111\u1ed5i nhi\u1ec7t.<\/p>\n<h2>T\u0103ng c\u01b0\u1eddng d\u1eabn nhi\u1ec7t<\/h2>\n<ul>\n<li><b>Hi\u1ec7u \u1ee9ng h\u1ea1t nano:<\/b> Khi c\u00e1c h\u1ea1t nano \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n trong ch\u1ea5t l\u1ecfng, ch\u00fang kh\u00f4ng ch\u1ec9 cung c\u1ea5p th\u00eam di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t \u0111\u1ec3 trao \u0111\u1ed5i nhi\u1ec7t m\u00e0 c\u00f2n t\u1ea1o n\u00ean c\u00e1c con \u0111\u01b0\u1eddng d\u1eabn nhi\u1ec7t hi\u1ec7u qu\u1ea3 h\u01a1n. \u0110i\u1ec1u n\u00e0y l\u00e0m t\u0103ng h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t t\u1ed5ng th\u1ec3 c\u1ee7a ch\u1ea5t l\u1ecfng.<\/li>\n<li><b>\u1ea2nh h\u01b0\u1edfng c\u1ee7a k\u00edch th\u01b0\u1edbc v\u00e0 h\u00ecnh d\u1ea1ng h\u1ea1t:<\/b> \u0110\u1eb7c \u0111i\u1ec3m k\u00edch th\u01b0\u1edbc v\u00e0 h\u00ecnh d\u1ea1ng c\u1ee7a c\u00e1c h\u1ea1t nano \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t. Nh\u1ecf h\u01a1n v\u00e0 \u0111\u1eb7c bi\u1ec7t h\u01a1n v\u1ec1 h\u00ecnh d\u1ea1ng, c\u00e1c h\u1ea1t nano c\u00e0ng \u0111\u01b0a \u0111\u1ebfn s\u1ef1 t\u0103ng c\u01b0\u1eddng t\u1ed1t h\u01a1n v\u1ec1 d\u1eabn nhi\u1ec7t.<\/li>\n<li><b>T\u00e1c \u0111\u1ed9ng t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c h\u1ea1t:<\/b> S\u1ef1 t\u01b0\u01a1ng t\u00e1c ph\u00e2n t\u1eed gi\u1eefa c\u00e1c h\u1ea1t nano v\u00e0 ch\u1ea5t l\u1ecfng n\u1ec1n c\u0169ng g\u00f3p ph\u1ea7n c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng truy\u1ec1n nhi\u1ec7t. C\u00e1c hi\u1ec7n t\u01b0\u1ee3ng nh\u01b0 \u0111\u1ed1i l\u01b0u vi m\u00f4 v\u00e0 khu\u1ebfch t\u00e1n gia t\u0103ng l\u00e0 m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng.<\/li>\n<\/ul>\n<p>C\u00f4ng th\u1ee9c c\u01a1 b\u1ea3n \u0111\u1ec3 t\u00ednh h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t hi\u1ec7u qu\u1ea3 (k<sub>eff<\/sub>) c\u1ee7a m\u1ed9t ch\u1ea5t l\u1ecfng nano th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n nh\u01b0 sau:<\/p>\n<p><em>k<sub>eff<\/sub> = k<sub>nf<\/sub> + (c<sub>p<\/sub> * \\frac{A}{\\delta})<\/em><\/p>\n<p>Trong \u0111\u00f3:<\/p>\n<ul>\n<li>k<sub>nf<\/sub> l\u00e0 h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t c\u1ee7a ch\u1ea5t l\u1ecfng n\u1ec1n<\/li>\n<li>c<sub>p<\/sub> l\u00e0 nhi\u1ec7t dung ri\u00eang c\u1ee7a ch\u1ea5t l\u1ecfng<\/li>\n<li>A l\u00e0 di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac<\/li>\n<li>\\(\\delta\\) l\u00e0 \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp ph\u00e2n t\u00e1n h\u1ea1t nano<\/li>\n<\/ul>\n<h2>\u1ee8ng d\u1ee5ng<\/h2>\n<ol>\n<li>\n    <b>H\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t m\u00e1y t\u00ednh v\u00e0 \u0111i\u1ec7n t\u1eed:<\/b> Ch\u1ea5t l\u1ecfng nano \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng t\u1ea3n nhi\u1ec7t c\u1ee7a m\u00e1y t\u00ednh v\u00e0 c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, gi\u00fap ch\u00fang ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 h\u01a1n v\u00e0 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd.\n  <\/li>\n<li>\n    <b>C\u00f4ng nghi\u1ec7p \u00f4 t\u00f4:<\/b> Trong ng\u00e0nh \u00f4 t\u00f4, ch\u1ea5t l\u1ecfng nano \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t \u0111\u1ed9ng c\u01a1, gi\u00fap c\u1ea3i thi\u1ec7n vi\u1ec7c t\u1ea3n nhi\u1ec7t v\u00e0 b\u1ea3o v\u1ec7 \u0111\u1ed9ng c\u01a1 kh\u1ecfi qu\u00e1 nhi\u1ec7t.\n  <\/li>\n<li>\n    <b>N\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi:<\/b> Ch\u1ea5t l\u1ecfng nano c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c h\u1ec7 th\u1ed1ng thu th\u1eadp n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi, gi\u00fap t\u0103ng hi\u1ec7u su\u1ea5t chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t th\u00e0nh \u0111i\u1ec7n n\u0103ng.\n  <\/li>\n<li>\n    <b>Y khoa:<\/b> Trong y khoa, ch\u1ea5t l\u1ecfng nano \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 l\u00e0m m\u00e1t trong c\u00e1c thi\u1ebft b\u1ecb MRI v\u00e0 trong c\u00e1c k\u1ef9 thu\u1eadt t\u1ea3n nhi\u1ec7t n\u1ed9i t\u1ea1ng hi\u1ec7n \u0111\u1ea1i.\n  <\/li>\n<\/ol>\n<p>Nh\u01b0 v\u1eady, vi\u1ec7c s\u1eed d\u1ee5ng ch\u1ea5t l\u1ecfng nano kh\u00f4ng ch\u1ec9 mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt m\u00e0 c\u00f2n m\u1edf ra nhi\u1ec1u c\u01a1 h\u1ed9i m\u1edbi trong c\u00e1c l\u0129nh v\u1ef1c c\u00f4ng nghi\u1ec7p v\u00e0 y h\u1ecdc, gi\u00fap n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 t\u00ednh hi\u1ec7u qu\u1ea3 c\u1ee7a c\u00e1c qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i nhi\u1ec7t.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ch\u1ea5t l\u1ecfng nano: T\u00ecm hi\u1ec3u c\u00e1ch ch\u1ea5t l\u1ecfng nano t\u0103ng c\u01b0\u1eddng d\u1eabn nhi\u1ec7t v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng trong c\u00f4ng nghi\u1ec7p v\u00e0 \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y.<\/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":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ch\u1ea5t l\u1ecfng nano | T\u0103ng c\u01b0\u1eddng d\u1eabn nhi\u1ec7t &amp; \u1ee8ng d\u1ee5ng<\/title>\n<meta name=\"description\" content=\"Ch\u1ea5t l\u1ecfng nano: T\u00ecm hi\u1ec3u c\u00e1ch ch\u1ea5t l\u1ecfng nano t\u0103ng c\u01b0\u1eddng 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