{"id":685108,"date":"2024-11-21T11:33:50","date_gmt":"2024-11-21T10:33:50","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=685108"},"modified":"2024-11-21T11:33:50","modified_gmt":"2024-11-21T10:33:50","slug":"3-loai-cong-tac-nhiet-do-de-kiem-soat-nhiet-do","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/3-loai-cong-tac-nhiet-do-de-kiem-soat-nhiet-do\/","title":{"rendered":"3 Lo\u1ea1i C\u00f4ng T\u1eafc Nhi\u1ec7t \u0110\u1ed9 \u0111\u1ec3 Ki\u1ec3m So\u00e1t Nhi\u1ec7t \u0110\u1ed9"},"content":{"rendered":"

B\u00e0i vi\u1ebft gi\u1edbi thi\u1ec7u 3 lo\u1ea1i c\u00f4ng t\u1eafc nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec3 ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9, c\u00e1ch ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang trong ng\u00e0nh c\u00f4ng nghi\u1ec7p.<\/p>\n

\"3<\/p>\n

3 Lo\u1ea1i C\u00f4ng T\u1eafc Nhi\u1ec7t \u0110\u1ed9 \u0111\u1ec3 Ki\u1ec3m So\u00e1t Nhi\u1ec7t \u0110\u1ed9<\/h2>\n

Trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t, ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 v\u00f4 c\u00f9ng quan tr\u1ecdng. \u0110\u1ec3 l\u00e0m \u0111i\u1ec1u n\u00e0y, c\u00e1c k\u1ef9 s\u01b0 v\u00e0 nh\u00e0 khoa h\u1ecdc th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i c\u00f4ng t\u1eafc nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 ba lo\u1ea1i c\u00f4ng t\u1eafc nhi\u1ec7t \u0111\u1ed9 ph\u1ed5 bi\u1ebfn th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 trong c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau.<\/p>\n

1. C\u00f4ng T\u1eafc Nhi\u1ec7t C\u01a1 H\u1ecdc (Thermal Mechanical Switch)<\/h2>\n

C\u00f4ng t\u1eafc nhi\u1ec7t c\u01a1 h\u1ecdc l\u00e0 lo\u1ea1i c\u00f4ng t\u1eafc d\u00f9ng \u0111\u1ec3 ng\u1eaft ho\u1eb7c n\u1ed1i m\u1ea1ch \u0111i\u1ec7n khi \u0111\u1ea1t \u0111\u1ebfn m\u1ed9t m\u1ee9c nhi\u1ec7t \u0111\u1ed9 x\u00e1c \u0111\u1ecbnh. C\u00e1c c\u00f4ng t\u1eafc n\u00e0y ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean s\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nhau. Khi nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i, c\u00e1c v\u1eadt li\u1ec7u n\u00e0y s\u1ebd gi\u00e3n n\u1edf ho\u1eb7c co l\u1ea1i, m\u1edf ho\u1eb7c \u0111\u00f3ng m\u1ea1ch \u0111i\u1ec7n.<\/p>\n

<\/p>\n

  • \u01afu \u0111i\u1ec3m: \u0110\u01a1n gi\u1ea3n, tin c\u1eady v\u00e0 chi ph\u00ed th\u1ea5p.<\/li>\n
  • Nh\u01b0\u1ee3c \u0111i\u1ec3m: \u0110\u1ed9 ch\u00ednh x\u00e1c kh\u00f4ng cao, d\u1ec5 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi m\u00f4i tr\u01b0\u1eddng xung quanh.<\/li>\n

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

    2. C\u1ea3m Bi\u1ebfn Nhi\u1ec7t \u0110i\u1ec7n Tr\u1edf (Thermistor)<\/h2>\n

    C\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111i\u1ec7n tr\u1edf l\u00e0 lo\u1ea1i c\u1ea3m bi\u1ebfn thay \u0111\u1ed5i \u0111i\u1ec7n tr\u1edf khi nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i. C\u00f3 hai lo\u1ea1i ch\u00ednh l\u00e0 NTC (Negative Temperature Coefficient) hay \u0111i\u1ec7n tr\u1edf c\u00f3 h\u1ec7 s\u1ed1 nhi\u1ec7t \u0111\u1ed9 \u00e2m, v\u00e0 PTC (Positive Temperature Coefficient) hay \u0111i\u1ec7n tr\u1edf c\u00f3 h\u1ec7 s\u1ed1 nhi\u1ec7t \u0111\u1ed9 d\u01b0\u01a1ng.<\/p>\n

    <\/p>\n

  • \u01afu \u0111i\u1ec3m: \u0110\u1ed9 ch\u00ednh x\u00e1c cao, ph\u1ea3n \u1ee9ng nhanh v\u1edbi s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9.<\/li>\n
  • Nh\u01b0\u1ee3c \u0111i\u1ec3m: D\u1ec5 b\u1ecb h\u1ecfng \u1edf nhi\u1ec7t \u0111\u1ed9 cao, c\u00f3 th\u1ec3 \u0111\u1eaft \u0111\u1ecf h\u01a1n c\u00f4ng t\u1eafc nhi\u1ec7t c\u01a1 h\u1ecdc.<\/li>\n

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

    3. C\u1ea3m Bi\u1ebfn Nhi\u1ec7t \u0110i\u1ec7n (Thermocouple)<\/h2>\n

    C\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111i\u1ec7n l\u00e0 lo\u1ea1i c\u1ea3m bi\u1ebfn \u0111o s\u1ef1 kh\u00e1c nhau \u0111i\u1ec7n \u00e1p gi\u1eefa hai kim lo\u1ea1i kh\u00e1c nhau k\u1ebft n\u1ed1i t\u1ea1i hai \u0111i\u1ec3m, khi c\u00f3 s\u1ef1 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 gi\u1eefa \u0111i\u1ec3m k\u1ebft n\u1ed1i v\u00e0 \u0111i\u1ec3m \u0111o. C\u00f4ng th\u1ee9c \u0111i\u1ec7n \u00e1p nhi\u1ec7t \u0111i\u1ec7n l\u00e0:<\/p>\n

    V = \u03b1 * (T\\sub{1} – T\\sub{2})<\/p>\n

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

    <\/p>\n

  • V l\u00e0 \u0111i\u1ec7n \u00e1p t\u1ea1o th\u00e0nh.<\/li>\n
  • \u03b1 l\u00e0 h\u1ec7 s\u1ed1 Seebeck<\/li>\n
  • T\\sub{1} v\u00e0 T\\sub{2} l\u00e0 nhi\u1ec7t \u0111\u1ed9 c\u1ee7a hai \u0111i\u1ec3m.<\/li>\n

    <\/o1><\/p>\n

    <\/p>\n

  • \u01afu \u0111i\u1ec3m: Ho\u1ea1t \u0111\u1ed9ng \u1edf d\u1ea3i nhi\u1ec7t \u0111\u1ed9 r\u1ed9ng, \u0111\u1ed9 b\u1ec1n cao.<\/li>\n
  • Nh\u01b0\u1ee3c \u0111i\u1ec3m: \u0110\u1ed9 ch\u00ednh x\u00e1c v\u1eeba ph\u1ea3i, c\u1ea7n th\u00eam thi\u1ebft b\u1ecb \u0111\u1ec3 x\u1eed l\u00fd t\u00edn hi\u1ec7u.<\/li>\n

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

    Nh\u01b0 v\u1eady, m\u1ed7i lo\u1ea1i c\u00f4ng t\u1eafc nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec1u c\u00f3 \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m ri\u00eang, v\u00e0 l\u1ef1a ch\u1ecdn lo\u1ea1i n\u00e0o c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a t\u1eebng \u1ee9ng d\u1ee5ng. Hi\u1ec3u r\u00f5 v\u1ec1 t\u1eebng lo\u1ea1i c\u00f4ng t\u1eafc s\u1ebd gi\u00fap b\u1ea1n ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 v\u00e0 ch\u00ednh x\u00e1c h\u01a1n.<\/p>\n","protected":false},"excerpt":{"rendered":"

    B\u00e0i vi\u1ebft gi\u1edbi thi\u1ec7u 3 lo\u1ea1i c\u00f4ng t\u1eafc nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec3 ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9, c\u00e1ch ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang trong ng\u00e0nh c\u00f4ng nghi\u1ec7p.<\/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":"\n3 Lo\u1ea1i C\u00f4ng T\u1eafc Nhi\u1ec7t \u0110\u1ed9 \u0111\u1ec3 Ki\u1ec3m So\u00e1t Nhi\u1ec7t \u0110\u1ed9<\/title>\n<meta name=\"description\" content=\"B\u00e0i vi\u1ebft gi\u1edbi thi\u1ec7u 3 lo\u1ea1i c\u00f4ng t\u1eafc nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec3 ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9, c\u00e1ch ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang trong ng\u00e0nh c\u00f4ng nghi\u1ec7p.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.thermal-engineering.org\/vi\/3-loai-cong-tac-nhiet-do-de-kiem-soat-nhiet-do\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"3 Lo\u1ea1i C\u00f4ng T\u1eafc Nhi\u1ec7t \u0110\u1ed9 \u0111\u1ec3 Ki\u1ec3m So\u00e1t Nhi\u1ec7t \u0110\u1ed9\" \/>\n<meta property=\"og:description\" content=\"B\u00e0i vi\u1ebft gi\u1edbi thi\u1ec7u 3 lo\u1ea1i c\u00f4ng t\u1eafc nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec3 ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9, c\u00e1ch ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang trong ng\u00e0nh c\u00f4ng nghi\u1ec7p.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.thermal-engineering.org\/vi\/3-loai-cong-tac-nhiet-do-de-kiem-soat-nhiet-do\/\" \/>\n<meta property=\"og:site_name\" content=\"Thermal Engineering\" \/>\n<meta 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