{"id":697343,"date":"2024-10-20T11:32:48","date_gmt":"2024-10-20T10:32:48","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=697343"},"modified":"2024-10-20T11:32:48","modified_gmt":"2024-10-20T10:32:48","slug":"cac-tinh-chat-nhiet-dong-luc-hoc-cua-cac-chat-lam-lanh-thay-the","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/cac-tinh-chat-nhiet-dong-luc-hoc-cua-cac-chat-lam-lanh-thay-the\/","title":{"rendered":"C\u00e1c t\u00ednh ch\u1ea5t nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc c\u1ee7a c\u00e1c ch\u1ea5t l\u00e0m l\u1ea1nh thay th\u1ebf"},"content":{"rendered":"<p class=\"sidekick\">C\u00e1c t\u00ednh ch\u1ea5t nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc c\u1ee7a c\u00e1c ch\u1ea5t l\u00e0m l\u1ea1nh thay th\u1ebf: t\u00ecm hi\u1ec3u hi\u1ec7u su\u1ea5t, t\u00ednh an to\u00e0n v\u00e0 t\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a c\u00e1c ch\u1ea5t l\u00e0m l\u1ea1nh th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/cac_tinh_chat_nhiet_dong_luc_hoc_cua_cac_chat_lam_lanh_thay_the.png\" alt=\"C\u00e1c t\u00ednh ch\u1ea5t nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc c\u1ee7a c\u00e1c ch\u1ea5t l\u00e0m l\u1ea1nh thay th\u1ebf\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>C\u00e1c t\u00ednh ch\u1ea5t nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc c\u1ee7a c\u00e1c ch\u1ea5t l\u00e0m l\u1ea1nh thay th\u1ebf<\/h2>\n<p>C\u00e1c ch\u1ea5t l\u00e0m l\u1ea1nh thay th\u1ebf \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t ch\u1ee7 \u0111\u1ec1 n\u00f3ng b\u1ecfng trong thermal engineering do nh\u1eefng lo ng\u1ea1i v\u1ec1 t\u00e1c \u0111\u1ed9ng m\u00f4i tr\u01b0\u1eddng c\u1ee7a c\u00e1c ch\u1ea5t l\u00e0m l\u1ea1nh truy\u1ec1n th\u1ed1ng nh\u01b0 CFC (chlorofluorocarbon) v\u00e0 HCFC (hydrochlorofluorocarbon). B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u00e0o vi\u1ec7c kh\u00e1m ph\u00e1 c\u00e1c t\u00ednh ch\u1ea5t nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc c\u1ee7a m\u1ed9t s\u1ed1 ch\u1ea5t l\u00e0m l\u1ea1nh thay th\u1ebf ph\u1ed5 bi\u1ebfn.<\/p>\n<h2>C\u00e1c t\u00ednh ch\u1ea5t nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc c\u01a1 b\u1ea3n<\/h2>\n<p>M\u1ed9t ch\u1ea5t l\u00e0m l\u1ea1nh l\u00fd t\u01b0\u1edfng th\u01b0\u1eddng c\u00f3 c\u00e1c t\u00ednh ch\u1ea5t nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc sau:<\/p>\n<p><u1><\/p>\n<li>Nhi\u1ec7t dung ri\u00eang cao<\/li>\n<li>Nhi\u1ec7t h\u00f3a h\u01a1i th\u1ea5p<\/li>\n<li>\u00c1p su\u1ea5t h\u01a1i h\u1ee3p l\u00fd<\/li>\n<li>Kh\u1ea3 n\u0103ng truy\u1ec1n nhi\u1ec7t t\u1ed1t<\/li>\n<li>T\u00ednh an to\u00e0n v\u00e0 kh\u00f4ng \u0111\u1ed9c h\u1ea1i<\/li>\n<p><\/u1><\/p>\n<h2>C\u00e1c ch\u1ea5t l\u00e0m l\u1ea1nh thay th\u1ebf ph\u1ed5 bi\u1ebfn<\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 ch\u1ea5t l\u00e0m l\u1ea1nh thay th\u1ebf ph\u1ed5 bi\u1ebfn c\u00f9ng v\u1edbi m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc c\u1ee7a ch\u00fang:<\/p>\n<h3>R-134a (1,1,1,2-Tetrafluoroethane)<\/h3>\n<ul>\n<li>\u00c1p su\u1ea5t h\u00f3a h\u01a1i: 593 kPa t\u1ea1i 25\u00b0C<\/li>\n<li>Nhi\u1ec7t h\u00f3a h\u01a1i: 215 kJ\/kg<\/li>\n<li>Nhi\u1ec7t dung ri\u00eang (C<sub>p<\/sub>): 0.85 kJ\/kg\u00b7K<\/li>\n<\/ul>\n<h3>R-1234yf (2,3,3,3-Tetrafluoropropene)<\/h3>\n<ul>\n<li>\u00c1p su\u1ea5t h\u00f3a h\u01a1i: 560 kPa t\u1ea1i 25\u00b0C<\/li>\n<li>Nhi\u1ec7t h\u00f3a h\u01a1i: 197 kJ\/kg<\/li>\n<li>Nhi\u1ec7t dung ri\u00eang (C<sub>p<\/sub>): 1.097 kJ\/kg\u00b7K<\/li>\n<\/ul>\n<h3>R-290 (Propane)<\/h3>\n<ul>\n<li>\u00c1p su\u1ea5t h\u00f3a h\u01a1i: 850 kPa t\u1ea1i 25\u00b0C<\/li>\n<li>Nhi\u1ec7t h\u00f3a h\u01a1i: 380 kJ\/kg<\/li>\n<li>Nhi\u1ec7t dung ri\u00eang (C<sub>p<\/sub>): 1.67 kJ\/kg\u00b7K<\/li>\n<\/ul>\n<h2>\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a c\u00e1c ch\u1ea5t l\u00e0m l\u1ea1nh thay th\u1ebf<\/h2>\n<h3>R-134a<\/h3>\n<ul>\n<li>\u01afu \u0111i\u1ec3m: Kh\u00f4ng g\u00e2y h\u1ea1i t\u1ea7ng ozone, hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng t\u1ed1t<\/li>\n<li>Nh\u01b0\u1ee3c \u0111i\u1ec3m: GWP (Global Warming Potential) cao<\/li>\n<\/ul>\n<h3>R-1234yf<\/h3>\n<ul>\n<li>\u01afu \u0111i\u1ec3m: GWP th\u1ea5p, an to\u00e0n \u0111\u1ed1i v\u1edbi m\u00f4i tr\u01b0\u1eddng<\/li>\n<li>Nh\u01b0\u1ee3c \u0111i\u1ec3m: Chi ph\u00ed cao, y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt b\u1ea3o d\u01b0\u1ee1ng \u0111\u1eb7c bi\u1ec7t<\/li>\n<\/ul>\n<h3>R-290<\/h3>\n<ul>\n<li>\u01afu \u0111i\u1ec3m: Hi\u1ec7u su\u1ea5t l\u00e0m vi\u1ec7c cao, gi\u00e1 th\u00e0nh r\u1ebb, kh\u00f4ng g\u00e2y h\u1ea1i m\u00f4i tr\u01b0\u1eddng<\/li>\n<li>Nh\u01b0\u1ee3c \u0111i\u1ec3m: D\u1ec5 ch\u00e1y, y\u00eau c\u1ea7u quy \u0111\u1ecbnh an to\u00e0n nghi\u00eam ng\u1eb7t<\/li>\n<\/ul>\n<h2>T\u1ed5ng k\u1ebft<\/h2>\n<p>C\u00e1c ch\u1ea5t l\u00e0m l\u1ea1nh thay th\u1ebf nh\u01b0 R-134a, R-1234yf v\u00e0 R-290 \u0111\u1ec1u c\u00f3 nh\u1eefng t\u00ednh ch\u1ea5t nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc \u0111\u1eb7c tr\u01b0ng, ph\u00f9 h\u1ee3p cho t\u1eebng m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng kh\u00e1c nhau. Vi\u1ec7c l\u1ef1a ch\u1ecdn ch\u1ea5t l\u00e0m l\u1ea1nh ph\u00f9 h\u1ee3p c\u1ea7n d\u1ef1a tr\u00ean c\u00e1c ti\u00eau ch\u00ed nh\u01b0 hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng, an to\u00e0n v\u00e0 t\u00e1c \u0111\u1ed9ng m\u00f4i tr\u01b0\u1eddng. V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7, ng\u00e0y c\u00e0ng nhi\u1ec1u ch\u1ea5t l\u00e0m l\u1ea1nh m\u1edbi \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n, m\u1edf ra nh\u1eefng c\u01a1 h\u1ed9i m\u1edbi cho ng\u00e0nh thermal engineering.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e1c t\u00ednh ch\u1ea5t nhi\u1ec7t \u0111\u1ed9ng l\u1ef1c h\u1ecdc c\u1ee7a c\u00e1c ch\u1ea5t l\u00e0m l\u1ea1nh thay th\u1ebf: t\u00ecm hi\u1ec3u hi\u1ec7u su\u1ea5t, t\u00ednh an to\u00e0n v\u00e0 t\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a c\u00e1c ch\u1ea5t l\u00e0m l\u1ea1nh th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng.<\/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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