{"id":692215,"date":"2024-09-01T07:58:10","date_gmt":"2024-09-01T06:58:10","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=692215"},"modified":"2024-09-01T07:58:10","modified_gmt":"2024-09-01T06:58:10","slug":"methyl-chloride-chat-lam-lanh-do-dan-nhiet","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/methyl-chloride-chat-lam-lanh-do-dan-nhiet\/","title":{"rendered":"Methyl Chloride | Ch\u1ea5t l\u00e0m l\u1ea1nh, \u0110\u1ed9 d\u1eabn nhi\u1ec7t"},"content":{"rendered":"

T\u00ecm hi\u1ec3u v\u1ec1 Methyl Chloride, ch\u1ea5t l\u00e0m l\u1ea1nh hi\u1ec7u qu\u1ea3 v\u1edbi \u0111\u1ed9 d\u1eabn nhi\u1ec7t \u01b0u vi\u1ec7t. \u1ee8ng d\u1ee5ng trong c\u00f4ng nghi\u1ec7p v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t hi\u1ec7n \u0111\u1ea1i.<\/p>\n

\"Methyl<\/p>\n

Methyl Chloride | Ch\u1ea5t l\u00e0m l\u1ea1nh, \u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/h2>\n

Ch\u1ea5t l\u00e0m l\u1ea1nh<\/b><\/p>\n

Methyl chloride, c\u00f2n \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi t\u00ean g\u1ecdi chloromethane, l\u00e0 m\u1ed9t h\u1ee3p ch\u1ea5t h\u00f3a h\u1ecdc quan tr\u1ecdng v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p. M\u1ed9t trong nh\u1eefng \u1ee9ng d\u1ee5ng ch\u00ednh c\u1ee7a methyl chloride l\u00e0 l\u00e0m ch\u1ea5t l\u00e0m l\u1ea1nh (refrigerant). H\u1ee3p ch\u1ea5t n\u00e0y c\u00f3 c\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc CH3<\/sub>Cl v\u00e0 l\u00e0 m\u1ed9t lo\u1ea1i ch\u1ea5t kh\u00ed kh\u00f4ng m\u00e0u, d\u1ec5 ch\u00e1y.<\/p>\n

Trong qu\u00e1 kh\u1ee9, methyl chloride \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t l\u00e0m l\u1ea1nh trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed v\u00e0 t\u1ee7 l\u1ea1nh. Tuy nhi\u00ean, do kh\u1ea3 n\u0103ng g\u00e2y h\u1ea1i cho t\u1ea7ng ozon v\u00e0 nh\u1eefng \u1ea3nh h\u01b0\u1edfng ti\u00eau c\u1ef1c \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng, vi\u1ec7c s\u1eed d\u1ee5ng n\u00f3 \u0111\u00e3 b\u1ecb h\u1ea1n ch\u1ebf v\u00e0 thay th\u1ebf b\u1eb1ng c\u00e1c ch\u1ea5t l\u00e0m l\u1ea1nh kh\u00e1c an to\u00e0n h\u01a1n nh\u01b0 hydrofluorocarbon (HFCs) v\u00e0 hydrofluoroolefin (HFOs).<\/p>\n

\u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/b><\/p>\n

\u0110\u1ed9 d\u1eabn nhi\u1ec7t c\u1ee7a m\u1ed9t ch\u1ea5t l\u00e0 kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t c\u1ee7a n\u00f3 t\u1eeb m\u1ed9t \u0111i\u1ec3m n\u00e0y \u0111\u1ebfn m\u1ed9t \u0111i\u1ec3m kh\u00e1c khi c\u00f3 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9. Trong tr\u01b0\u1eddng h\u1ee3p c\u1ee7a methyl chloride, n\u00f3 c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t kh\u00e1 th\u1ea5p so v\u1edbi nhi\u1ec1u ch\u1ea5t kh\u00e1c, \u0111i\u1ec1u n\u00e0y l\u00e0m cho n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn kh\u00f4ng l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi s\u1ef1 d\u1eabn nhi\u1ec7t cao.<\/p>\n

C\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh \u0111\u1ed9 d\u1eabn nhi\u1ec7t (k) l\u00e0:<\/p>\n

\\[k = \\frac{Q \\cdot L}{A \\cdot \\Delta T}\\]\n

Trong \u0111\u00f3:<\/p>\n

<\/p>\n

  • k: \u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/li>\n
  • Q: Nhi\u1ec7t l\u01b0\u1ee3ng truy\u1ec1n qua v\u1eadt li\u1ec7u<\/li>\n
  • L: \u0110\u1ed9 d\u00e0y c\u1ee7a v\u1eadt li\u1ec7u<\/li>\n
  • A: Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t<\/li>\n
  • \\(\\Delta T\\): Ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9<\/li>\n

    <\/u1><\/p>\n

    \u0110\u1ed1i v\u1edbi methyl chloride, \u0111\u1ed9 d\u1eabn nhi\u1ec7t c\u1ee7a n\u00f3 v\u00e0o kho\u1ea3ng 0.014 W\/m\u00b7K \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng, th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c kim lo\u1ea1i nh\u01b0 \u0111\u1ed3ng (kho\u1ea3ng 400 W\/m\u00b7K) v\u00e0 th\u00e9p (kho\u1ea3ng 50 W\/m\u00b7K).<\/p>\n

    Do \u0111\u00f3, m\u1eb7c d\u00f9 methyl chloride c\u00f3 l\u1ecbch s\u1eed s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u01b0 m\u1ed9t ch\u1ea5t l\u00e0m l\u1ea1nh, nh\u01b0ng \u0111\u1ed9 d\u1eabn nhi\u1ec7t th\u1ea5p c\u1ee7a n\u00f3 gi\u1edbi h\u1ea1n kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u d\u1eabn nhi\u1ec7t hi\u1ec7u qu\u1ea3.<\/p>\n","protected":false},"excerpt":{"rendered":"

    T\u00ecm hi\u1ec3u v\u1ec1 Methyl Chloride, ch\u1ea5t l\u00e0m l\u1ea1nh hi\u1ec7u qu\u1ea3 v\u1edbi \u0111\u1ed9 d\u1eabn nhi\u1ec7t \u01b0u vi\u1ec7t. \u1ee8ng d\u1ee5ng trong c\u00f4ng nghi\u1ec7p v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t hi\u1ec7n \u0111\u1ea1i.<\/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":"\nMethyl Chloride | Ch\u1ea5t l\u00e0m l\u1ea1nh, \u0110\u1ed9 d\u1eabn nhi\u1ec7t<\/title>\n<meta name=\"description\" content=\"T\u00ecm hi\u1ec3u v\u1ec1 Methyl Chloride, ch\u1ea5t l\u00e0m l\u1ea1nh hi\u1ec7u qu\u1ea3 v\u1edbi \u0111\u1ed9 d\u1eabn nhi\u1ec7t \u01b0u vi\u1ec7t. \u1ee8ng d\u1ee5ng trong c\u00f4ng nghi\u1ec7p v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t hi\u1ec7n \u0111\u1ea1i.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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