{"id":709553,"date":"2024-11-13T00:19:03","date_gmt":"2024-11-12T23:19:03","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=709553"},"modified":"2024-11-13T00:19:03","modified_gmt":"2024-11-12T23:19:03","slug":"chi-so-eckert-trong-dong-luc-hoc-chat-long-la-gi","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/chi-so-eckert-trong-dong-luc-hoc-chat-long-la-gi\/","title":{"rendered":"Ch\u1ec9 S\u1ed1 Eckert Trong \u0110\u1ed9ng L\u1ef1c H\u1ecdc Ch\u1ea5t L\u1ecfng L\u00e0 G\u00ec?"},"content":{"rendered":"<p class=\"sidekick\">Ch\u1ec9 s\u1ed1 Eckert trong \u0111\u1ed9ng l\u1ef1c h\u1ecdc ch\u1ea5t l\u1ecfng \u0111o t\u1ec9 l\u1ec7 gi\u1eefa n\u0103ng l\u01b0\u1ee3ng \u0111\u1ed9ng h\u1ecdc v\u00e0 n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t, gi\u00fap \u0111\u00e1nh gi\u00e1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t trong d\u00f2ng ch\u1ea3y.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/chi_so_eckert_trong_dong_luc_hoc_chat_long_la_gi.png\" alt=\"Ch\u1ec9 S\u1ed1 Eckert Trong \u0110\u1ed9ng L\u1ef1c H\u1ecdc Ch\u1ea5t L\u1ecfng L\u00e0 G\u00ec?\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>Ch\u1ec9 S\u1ed1 Eckert Trong \u0110\u1ed9ng L\u1ef1c H\u1ecdc Ch\u1ea5t L\u1ecfng L\u00e0 G\u00ec?<\/h2>\n<p>Trong \u0111\u1ed9ng l\u1ef1c h\u1ecdc ch\u1ea5t l\u1ecfng, ch\u1ec9 s\u1ed1 Eckert (Ec) l\u00e0 m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng kh\u00f4ng th\u1ee9 nguy\u00ean gi\u00fap \u0111o l\u01b0\u1eddng s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa n\u0103ng l\u01b0\u1ee3ng t\u00edch tr\u1eef trong \u0111\u1ed9ng n\u0103ng c\u1ee7a ch\u1ea5t l\u1ecfng v\u00e0 n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t. Ch\u1ec9 s\u1ed1 n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng trong c\u00e1c ph\u00e2n t\u00edch li\u00ean quan \u0111\u1ebfn s\u1ef1 bi\u1ebfn \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng v\u00e0 nhi\u1ec7t \u0111\u1ed9 trong c\u00e1c h\u1ec7 th\u1ed1ng nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc.<\/p>\n<h2>\u0110\u1ecbnh Ngh\u0129a Ch\u1ec9 S\u1ed1 Eckert<\/h2>\n<p>Ch\u1ec9 s\u1ed1 Eckert \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a nh\u01b0 sau:<\/p>\n<p>\\[<br \/>\n\\text{Ec} = \\frac{v^2}{c_p \\Delta T}<br \/>\n\\]\n<p>Trong \u0111\u00f3:<\/p>\n<ul>\n<li><b>v<\/b>: V\u1eadn t\u1ed1c \u0111\u1eb7c tr\u01b0ng c\u1ee7a ch\u1ea5t l\u1ecfng (m\/s)<\/li>\n<li><b>c_p<\/b>: Nhi\u1ec7t dung ri\u00eang t\u1ea1i \u00e1p l\u1ef1c kh\u00f4ng \u0111\u1ed5i (J\/(kg\u00b7K))<\/li>\n<li><b>\u0394T<\/b>: Ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 \u0111\u1eb7c tr\u01b0ng (K)<\/li>\n<\/ul>\n<h2>\u1ee8ng D\u1ee5ng c\u1ee7a Ch\u1ec9 S\u1ed1 Eckert<\/h2>\n<p>Ch\u1ec9 s\u1ed1 Eckert th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng li\u00ean quan \u0111\u1ebfn \u0111\u1ed9ng c\u01a1 ph\u1ea3n l\u1ef1c, t\u00ean l\u1eeda v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 v\u1eadn t\u1ed1c ch\u1ea5t l\u1ecfng cao, n\u01a1i m\u00e0 c\u01a1 n\u0103ng c\u1ee7a ch\u1ea5t l\u1ecfng c\u00f3 th\u1ec3 chuy\u1ec3n h\u00f3a th\u00e0nh n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t m\u1ed9t c\u00e1ch \u0111\u00e1ng k\u1ec3.<\/p>\n<h3>Ph\u00e2n T\u00edch N\u0103ng L\u01b0\u1ee3ng<\/h3>\n<p>Khi Ec l\u1edbn, t\u1ee9c l\u00e0 \u0111\u1ed9ng n\u0103ng c\u1ee7a ch\u1ea5t l\u1ecfng c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0m t\u0103ng nhi\u1ec7t \u0111\u1ed9 c\u1ee7a ch\u1ea5t l\u1ecfng. Ng\u01b0\u1ee3c l\u1ea1i, khi Ec nh\u1ecf, nhi\u1ec7t n\u0103ng c\u00f3 vai tr\u00f2 quan tr\u1ecdng h\u01a1n trong t\u1ed5ng n\u0103ng l\u01b0\u1ee3ng c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<h3>\u1ee8ng D\u1ee5ng Th\u1ef1c Ti\u1ec5n<\/h3>\n<p>V\u00ed d\u1ee5, trong thi\u1ebft k\u1ebf tua-bin kh\u00ed, t\u00ednh to\u00e1n ch\u1ec9 s\u1ed1 Eckert gi\u00fap c\u00e1c k\u1ef9 s\u01b0 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 khi kh\u00ed di chuy\u1ec3n qua c\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a tua-bin v\u1edbi v\u1eadn t\u1ed1c cao. \u0110i\u1ec1u n\u00e0y gi\u00fap t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t c\u1ee7a m\u00e1y v\u00e0 \u0111\u1ea3m b\u1ea3o an to\u00e0n trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh.<\/p>\n<h2>K\u1ebft Lu\u1eadn<\/h2>\n<p>Ch\u1ec9 s\u1ed1 Eckert l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 quan tr\u1ecdng trong \u0111\u1ed9ng l\u1ef1c h\u1ecdc ch\u1ea5t l\u1ecfng, gi\u00fap c\u00e2n b\u1eb1ng gi\u1eefa \u0111\u1ed9ng n\u0103ng v\u00e0 nhi\u1ec7t n\u0103ng trong c\u00e1c \u1ee9ng d\u1ee5ng nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc. Hi\u1ec3u r\u00f5 v\u00e0 \u00e1p d\u1ee5ng \u0111\u00fang ch\u1ec9 s\u1ed1 n\u00e0y gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t v\u00e0 an to\u00e0n cho c\u00e1c h\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng ch\u1ea5t l\u1ecfng v\u1edbi v\u1eadn t\u1ed1c cao.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ch\u1ec9 s\u1ed1 Eckert trong \u0111\u1ed9ng l\u1ef1c h\u1ecdc ch\u1ea5t l\u1ecfng \u0111o t\u1ec9 l\u1ec7 gi\u1eefa n\u0103ng l\u01b0\u1ee3ng \u0111\u1ed9ng h\u1ecdc v\u00e0 n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t, gi\u00fap \u0111\u00e1nh gi\u00e1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t trong d\u00f2ng ch\u1ea3y.<\/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\u1ec9 S\u1ed1 Eckert Trong 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