{"id":674916,"date":"2024-11-17T09:58:03","date_gmt":"2024-11-17T08:58:03","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=674916"},"modified":"2024-11-17T09:58:03","modified_gmt":"2024-11-17T08:58:03","slug":"anh-huong-cua-nhiet-do-den-do-nhot-cua-chat-long","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/anh-huong-cua-nhiet-do-den-do-nhot-cua-chat-long\/","title":{"rendered":"\u1ea2nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 \u0111\u1ebfn \u0111\u1ed9 nh\u1edbt c\u1ee7a ch\u1ea5t l\u1ecfng"},"content":{"rendered":"<p class=\"sidekick\">\u1ea2nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 \u0111\u1ebfn \u0111\u1ed9 nh\u1edbt c\u1ee7a ch\u1ea5t l\u1ecfng gi\u1ea3i th\u00edch c\u00e1ch nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i \u0111\u1ed9 nh\u1edbt, t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn c\u00e1c qu\u00e1 tr\u00ecnh c\u00f4ng nghi\u1ec7p v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/anh_huong_cua_nhiet_do_den_do_nhot_cua_chat_long.png\" alt=\"\u1ea2nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 \u0111\u1ebfn \u0111\u1ed9 nh\u1edbt c\u1ee7a ch\u1ea5t l\u1ecfng\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>\u1ea2nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 \u0111\u1ebfn \u0111\u1ed9 nh\u1edbt c\u1ee7a ch\u1ea5t l\u1ecfng<\/h2>\n<p>\u0110\u1ed9 nh\u1edbt c\u1ee7a ch\u1ea5t l\u1ecfng l\u00e0 m\u1ed9t trong nh\u1eefng t\u00ednh ch\u1ea5t quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1ch ch\u1ea5t l\u1ecfng di chuy\u1ec3n v\u00e0 ch\u1ea3y. \u0110\u1ed9 nh\u1edbt \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 l\u1ef1c c\u1ea3n m\u00e0 ch\u1ea5t l\u1ecfng t\u00e1c \u0111\u1ed9ng l\u00ean c\u00e1c ph\u1ea7n t\u1eed kh\u00e1c khi ch\u00fang chuy\u1ec3n \u0111\u1ed9ng t\u01b0\u01a1ng \u0111\u1ed1i v\u1edbi nhau. M\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 nh\u1edbt c\u1ee7a ch\u1ea5t l\u1ecfng l\u00e0 nhi\u1ec7t \u0111\u1ed9.<\/p>\n<h2>T\u0103ng nhi\u1ec7t \u0111\u1ed9<\/h2>\n<p>Khi nhi\u1ec7t \u0111\u1ed9 c\u1ee7a ch\u1ea5t l\u1ecfng t\u0103ng, \u0111\u1ed9 nh\u1edbt c\u1ee7a ch\u1ea5t l\u1ecfng th\u01b0\u1eddng gi\u1ea3m. \u0110i\u1ec1u n\u00e0y x\u1ea3y ra do khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng, \u0111\u1ed9ng n\u0103ng c\u1ee7a c\u00e1c ph\u00e2n t\u1eed ch\u1ea5t l\u1ecfng c\u0169ng t\u0103ng l\u00ean. C\u00e1c ph\u00e2n t\u1eed chuy\u1ec3n \u0111\u1ed9ng nhanh h\u01a1n v\u00e0 d\u1ec5 d\u00e0ng tr\u01b0\u1ee3t qua nhau h\u01a1n, d\u1eabn \u0111\u1ebfn s\u1ef1 gi\u1ea3m l\u1ef1c c\u1ea3n gi\u1eefa c\u00e1c l\u1edbp ch\u1ea5t l\u1ecfng. V\u00ed d\u1ee5, d\u1ea7u b\u00f4i tr\u01a1n c\u00f3 xu h\u01b0\u1edbng tr\u1edf n\u00ean lo\u00e3ng h\u01a1n khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng, gi\u00fap n\u00f3 d\u1ec5 d\u00e0ng ch\u1ea3y h\u01a1n qua c\u00e1c b\u1ed9 ph\u1eadn c\u01a1 kh\u00ed.<\/p>\n<h2>Gi\u1ea3m nhi\u1ec7t \u0111\u1ed9<\/h2>\n<p>Ng\u01b0\u1ee3c l\u1ea1i, khi nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m, \u0111\u1ed9 nh\u1edbt c\u1ee7a ch\u1ea5t l\u1ecfng t\u0103ng l\u00ean. C\u00e1c ph\u00e2n t\u1eed ch\u1ea5t l\u1ecfng chuy\u1ec3n \u0111\u1ed9ng ch\u1eadm l\u1ea1i, t\u1ea1o ra nhi\u1ec1u l\u1ef1c c\u1ea3n h\u01a1n gi\u1eefa ch\u00fang. \u0110i\u1ec1u n\u00e0y l\u00e0m cho ch\u1ea5t l\u1ecfng tr\u1edf n\u00ean d\u00e0y h\u01a1n v\u00e0 kh\u00f3 ch\u1ea3y h\u01a1n. V\u00ed d\u1ee5, m\u1eadt ong \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng kh\u00e1 \u0111\u1eb7c, nh\u01b0ng khi nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m, n\u00f3 tr\u1edf n\u00ean r\u1ea5t \u0111\u1eb7c v\u00e0 kh\u00f3 ch\u1ea3y.<\/p>\n<h2>C\u00f4ng th\u1ee9c th\u1ef1c nghi\u1ec7m<\/h2>\n<p>Bi\u1ec3u th\u1ee9c Arrhenius th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 m\u00f4 t\u1ea3 s\u1ef1 ph\u1ee5 thu\u1ed9c c\u1ee7a \u0111\u1ed9 nh\u1edbt v\u00e0o nhi\u1ec7t \u0111\u1ed9:<\/p>\n<ul>\n<li><i>\\(\\eta = A * e^{\\frac{E_a}{R * T}}\\)<\/i><\/li>\n<\/ul>\n<p>Trong \u0111\u00f3:<\/p>\n<ul>\n<li>\\(\\eta\\) l\u00e0 \u0111\u1ed9 nh\u1edbt<\/li>\n<li>\\(A\\) l\u00e0 h\u1eb1ng s\u1ed1 Arrhenius<\/li>\n<li>\\(E_a\\) l\u00e0 n\u0103ng l\u01b0\u1ee3ng k\u00edch ho\u1ea1t<\/li>\n<li>\\(R\\) l\u00e0 h\u1eb1ng s\u1ed1 kh\u00ed l\u00fd t\u01b0\u1edfng<\/li>\n<li>\\(T\\) l\u00e0 nhi\u1ec7t \u0111\u1ed9 tuy\u1ec7t \u0111\u1ed1i (t\u00ednh b\u1eb1ng Kelvin)<\/li>\n<\/ul>\n<h2>C\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf<\/h2>\n<p>Trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf, s\u1ef1 thay \u0111\u1ed5i \u0111\u1ed9 nh\u1edbt theo nhi\u1ec7t \u0111\u1ed9 c\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn nhi\u1ec1u l\u0129nh v\u1ef1c:<\/p>\n<ul>\n<li><b>D\u1ea7u \u0111\u1ed9ng c\u01a1:<\/b> \u0110\u1ed9 nh\u1edbt c\u1ee7a d\u1ea7u \u0111\u1ed9ng c\u01a1 ph\u1ea3i \u1edf m\u1ee9c t\u1ed1i \u01b0u \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o b\u00f4i tr\u01a1n hi\u1ec7u qu\u1ea3 \u1edf c\u00e1c nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao c\u00e1c lo\u1ea1i d\u1ea7u \u0111a c\u1ea5p (nh\u01b0 10W-30) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/li>\n<li><b>S\u01a1n:<\/b> \u0110\u1ed9 nh\u1edbt c\u1ee7a s\u01a1n \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1ch n\u00f3 tr\u1ea3i tr\u00ean b\u1ec1 m\u1eb7t. Khi nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i, \u0111\u1ed9 nh\u1edbt c\u1ee7a s\u01a1n c\u0169ng thay \u0111\u1ed5i, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 m\u1ecbn m\u00e0ng v\u00e0 \u0111\u1ed9 d\u00e0y c\u1ee7a l\u1edbp s\u01a1n.<\/li>\n<li><b>Th\u1ef1c ph\u1ea9m:<\/b> Trong ng\u00e0nh c\u00f4ng nghi\u1ec7p th\u1ef1c ph\u1ea9m, vi\u1ec7c ki\u1ec3m so\u00e1t \u0111\u1ed9 nh\u1edbt c\u1ee7a n\u01b0\u1edbc s\u1ed1t, m\u1eadt ong v\u00e0 c\u00e1c ch\u1ea5t l\u1ecfng kh\u00e1c l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng.<\/li>\n<\/ul>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>\u1ea2nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 \u0111\u1ebfn \u0111\u1ed9 nh\u1edbt c\u1ee7a ch\u1ea5t l\u1ecfng l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng c\u1ea7n \u0111\u01b0\u1ee3c xem x\u00e9t trong nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p v\u00e0 h\u00e0ng ng\u00e0y. Hi\u1ec3u r\u00f5 m\u1ed1i quan h\u1ec7 n\u00e0y gi\u00fap ch\u00fang ta c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t v\u00e0 t\u1ed1i \u01b0u h\u00f3a qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t v\u00e0 s\u1eed d\u1ee5ng c\u00e1c ch\u1ea5t l\u1ecfng m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u1ea2nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 \u0111\u1ebfn \u0111\u1ed9 nh\u1edbt c\u1ee7a ch\u1ea5t l\u1ecfng gi\u1ea3i th\u00edch c\u00e1ch nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i \u0111\u1ed9 nh\u1edbt, t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn c\u00e1c qu\u00e1 tr\u00ecnh c\u00f4ng nghi\u1ec7p v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng.<\/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 - 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