{"id":691386,"date":"2024-11-07T12:54:37","date_gmt":"2024-11-07T11:54:37","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=691386"},"modified":"2024-11-07T12:54:37","modified_gmt":"2024-11-07T11:54:37","slug":"dioxit-cacbon-tinh-nhiet-va-cong-nghe-lam-lanh","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/dioxit-cacbon-tinh-nhiet-va-cong-nghe-lam-lanh\/","title":{"rendered":"Dioxit Cacbon | T\u00ednh Nhi\u1ec7t v\u00e0 C\u00f4ng Ngh\u1ec7 L\u00e0m L\u1ea1nh"},"content":{"rendered":"<p class=\"sidekick\">Dioxit Cacbon | T\u00ednh Nhi\u1ec7t v\u00e0 C\u00f4ng Ngh\u1ec7 L\u00e0m L\u1ea1nh: Kh\u00e1m ph\u00e1 c\u00e1ch CO2 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ec7 th\u1ed1ng l\u00e0m l\u1ea1nh hi\u1ec7n \u0111\u1ea1i v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc li\u00ean quan.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/dioxit_cacbon_tinh_nhiet_va_cong_nghe_lam_lanh.png\" alt=\"Dioxit Cacbon | T\u00ednh Nhi\u1ec7t v\u00e0 C\u00f4ng Ngh\u1ec7 L\u00e0m L\u1ea1nh\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>Dioxit Cacbon | T\u00ednh Nhi\u1ec7t v\u00e0 C\u00f4ng Ngh\u1ec7 L\u00e0m L\u1ea1nh<\/h2>\n<p>Dioxit cacbon (CO<sub>2<\/sub>) l\u00e0 m\u1ed9t h\u1ee3p ch\u1ea5t h\u00f3a h\u1ecdc quan tr\u1ecdng v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng trong k\u1ef9 thu\u1eadt nhi\u1ec7t v\u00e0 c\u00f4ng ngh\u1ec7 l\u00e0m l\u1ea1nh. N\u00f3 n\u1ed5i ti\u1ebfng kh\u00f4ng ch\u1ec9 nh\u01b0 m\u1ed9t kh\u00ed nh\u00e0 k\u00ednh m\u00e0 c\u00f2n l\u00e0 m\u1ed9t ch\u1ea5t l\u00e0m l\u1ea1nh hi\u1ec7u qu\u1ea3. Ch\u00fang ta s\u1ebd c\u00f9ng t\u00ecm hi\u1ec3u v\u1ec1 c\u00e1c t\u00ednh nhi\u1ec7t c\u1ee7a CO<sub>2<\/sub> v\u00e0 c\u00e1ch n\u00f3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong c\u00f4ng ngh\u1ec7 l\u00e0m l\u1ea1nh.<\/p>\n<h2>T\u00ednh Nhi\u1ec7t c\u1ee7a Dioxit Cacbon<\/h2>\n<p>CO<sub>2<\/sub> c\u00f3 m\u1ed9t s\u1ed1 \u0111\u1eb7c t\u00ednh nhi\u1ec7t \u0111\u00e1ng ch\u00fa \u00fd, bao g\u1ed3m nhi\u1ec7t dung ri\u00eang, nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t t\u1edbi h\u1ea1n.<\/p>\n<ul>\n<li><b>Nhi\u1ec7t dung ri\u00eang:<\/b> Nhi\u1ec7t dung ri\u00eang c\u1ee7a CO<sub>2<\/sub> l\u00e0 l\u01b0\u1ee3ng nhi\u1ec7t c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u0103ng nhi\u1ec7t \u0111\u1ed9 c\u1ee7a m\u1ed9t \u0111\u01a1n v\u1ecb kh\u1ed1i l\u01b0\u1ee3ng ch\u1ea5t n\u00e0y l\u00ean 1 \u0111\u1ed9 C. CO<sub>2<\/sub> c\u00f3 nhi\u1ec7t dung ri\u00eang kho\u1ea3ng 37.1 J\/(mol\u00b7K) \u1edf \u0111i\u1ec1u ki\u1ec7n chu\u1ea9n.<\/li>\n<li><b>Nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t t\u1edbi h\u1ea1n:<\/b> CO<sub>2<\/sub> c\u00f3 nhi\u1ec7t \u0111\u1ed9 t\u1edbi h\u1ea1n l\u00e0 31.0\u00b0C v\u00e0 \u00e1p su\u1ea5t t\u1edbi h\u1ea1n l\u00e0 7.39 MPa. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 tr\u00ean c\u00e1c gi\u00e1 tr\u1ecb n\u00e0y, CO<sub>2<\/sub> kh\u00f4ng th\u1ec3 t\u1ed3n t\u1ea1i d\u01b0\u1edbi d\u1ea1ng l\u1ecfng.<\/li>\n<\/ul>\n<h2>C\u00f4ng Ngh\u1ec7 L\u00e0m L\u1ea1nh v\u1edbi Dioxit Cacbon<\/h2>\n<p>CO<sub>2<\/sub> \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn trong c\u00e1c h\u1ec7 th\u1ed1ng l\u00e0m l\u1ea1nh nh\u1edd v\u00e0o c\u00e1c t\u00ednh ch\u1ea5t nhi\u1ec7t c\u1ee7a n\u00f3. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 l\u00fd do t\u1ea1i sao CO<sub>2<\/sub> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i:<\/p>\n<ol>\n<li><b>Hi\u1ec7u qu\u1ea3 l\u00e0m l\u1ea1nh cao:<\/b> CO<sub>2<\/sub> c\u00f3 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 nhi\u1ec7t cao, \u0111i\u1ec1u n\u00e0y l\u00e0m cho n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t ch\u1ea5t l\u00e0m l\u1ea1nh hi\u1ec7u qu\u1ea3.<\/li>\n<li><b>An to\u00e0n v\u00e0 th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng:<\/b> CO<sub>2<\/sub> kh\u00f4ng g\u00e2y hi\u1ec7n t\u01b0\u1ee3ng l\u00e0m m\u1ecfng t\u1ea7ng ozone v\u00e0 c\u00f3 ti\u1ec1m n\u0103ng n\u00f3ng l\u00ean to\u00e0n c\u1ea7u th\u1ea5p h\u01a1n so v\u1edbi nhi\u1ec1u ch\u1ea5t l\u00e0m l\u1ea1nh kh\u00e1c.<\/li>\n<li><b>Th\u00edch h\u1ee3p cho nhi\u1ec1u \u1ee9ng d\u1ee5ng:<\/b> CO<sub>2<\/sub> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau, t\u1eeb \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed, t\u1ee7 l\u1ea1nh, \u0111\u1ebfn l\u00e0m l\u1ea1nh si\u00eau th\u1ecb v\u00e0 th\u1eadm ch\u00ed trong c\u00e1c h\u1ec7 th\u1ed1ng l\u00e0m l\u1ea1nh c\u00f4ng nghi\u1ec7p l\u1edbn.<\/li>\n<\/ol>\n<h2>Chu Tr\u00ecnh L\u00e0m L\u1ea1nh Dioxit Cacbon<\/h2>\n<p>Chu tr\u00ecnh l\u00e0m l\u1ea1nh s\u1eed d\u1ee5ng CO<sub>2<\/sub> th\u01b0\u1eddng c\u00f3 c\u00e1c th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n bao g\u1ed3m m\u00e1y n\u00e9n, b\u00ecnh ng\u01b0ng, van gi\u00e3n n\u1edf v\u00e0 bay h\u01a1i.<\/p>\n<ul>\n<li><b>M\u00e1y n\u00e9n:<\/b> N\u00e9n CO<sub>2<\/sub> t\u1eeb tr\u1ea1ng th\u00e1i kh\u00ed \u00e1p su\u1ea5t th\u1ea5p l\u00ean tr\u1ea1ng th\u00e1i kh\u00ed \u00e1p su\u1ea5t cao, l\u00e0m cho nhi\u1ec7t \u0111\u1ed9 c\u1ee7a n\u00f3 t\u0103ng l\u00ean.<\/li>\n<li><b>B\u00ecnh ng\u01b0ng:<\/b> CO<sub>2<\/sub> \u00e1p su\u1ea5t cao \u0111i v\u00e0o b\u00ecnh ng\u01b0ng, n\u01a1i n\u00f3 t\u1ecfa nhi\u1ec7t v\u00e0 ng\u01b0ng t\u1ee5 l\u1ea1i th\u00e0nh l\u1ecfng.<\/li>\n<li><b>Van gi\u00e3n n\u1edf:<\/b> D\u00f2ng CO<sub>2<\/sub> l\u1ecfng \u00e1p su\u1ea5t cao \u0111i qua van gi\u00e3n n\u1edf, l\u00e0m cho \u00e1p su\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u1ed9 c\u1ee7a n\u00f3 gi\u1ea3m nhanh ch\u00f3ng.<\/li>\n<li><b>Bay h\u01a1i:<\/b> Cu\u1ed1i c\u00f9ng, CO<sub>2<\/sub> l\u1ecfng \u00e1p su\u1ea5t th\u1ea5p \u0111i v\u00e0o b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t, n\u01a1i n\u00f3 h\u1ea5p th\u1ee5 nhi\u1ec7t v\u00e0 bay h\u01a1i, cung c\u1ea5p hi\u1ec7u \u1ee9ng l\u00e0m l\u1ea1nh.<\/li>\n<\/ul>\n<h2>K\u1ebft Lu\u1eadn<\/h2>\n<p>Dioxit cacbon l\u00e0 m\u1ed9t ch\u1ea5t l\u00e0m l\u1ea1nh m\u1ea1nh m\u1ebd v\u00e0 hi\u1ec7u qu\u1ea3 v\u1edbi nh\u1eefng \u01b0u \u0111i\u1ec3m \u0111\u00e1ng k\u1ec3 v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 m\u00f4i tr\u01b0\u1eddng. T\u1eeb c\u00e1c t\u00ednh ch\u1ea5t nhi\u1ec7t n\u1ed5i b\u1eadt \u0111\u1ebfn \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c h\u1ec7 th\u1ed1ng l\u00e0m l\u1ea1nh, CO<sub>2<\/sub> ch\u1ee9ng t\u1ecf vai tr\u00f2 quan tr\u1ecdng trong ng\u00e0nh c\u00f4ng ngh\u1ec7 l\u00e0m l\u1ea1nh hi\u1ec7n \u0111\u1ea1i. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 gi\u00fap n\u00e2ng cao hi\u1ec7u su\u1ea5t m\u00e0 c\u00f2n g\u00f3p ph\u1ea7n v\u00e0o vi\u1ec7c b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dioxit Cacbon | T\u00ednh Nhi\u1ec7t v\u00e0 C\u00f4ng Ngh\u1ec7 L\u00e0m L\u1ea1nh: Kh\u00e1m ph\u00e1 c\u00e1ch CO2 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ec7 th\u1ed1ng l\u00e0m l\u1ea1nh hi\u1ec7n \u0111\u1ea1i v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc li\u00ean quan.<\/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>Dioxit Cacbon | T\u00ednh Nhi\u1ec7t v\u00e0 C\u00f4ng Ngh\u1ec7 L\u00e0m L\u1ea1nh<\/title>\n<meta name=\"description\" content=\"Dioxit Cacbon | T\u00ednh Nhi\u1ec7t v\u00e0 C\u00f4ng Ngh\u1ec7 L\u00e0m L\u1ea1nh: Kh\u00e1m ph\u00e1 c\u00e1ch CO2 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ec7 th\u1ed1ng l\u00e0m l\u1ea1nh hi\u1ec7n \u0111\u1ea1i v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t nhi\u1ec7t \u0111\u1ed9ng h\u1ecdc li\u00ean quan.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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