{"id":710104,"date":"2024-07-27T18:49:50","date_gmt":"2024-07-27T17:49:50","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=710104"},"modified":"2024-07-27T18:49:50","modified_gmt":"2024-07-27T17:49:50","slug":"cach-tan-nhiet-hoat-dong-nhu-the-nao","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/cach-tan-nhiet-hoat-dong-nhu-the-nao\/","title":{"rendered":"C\u00e1ch t\u1ea3n nhi\u1ec7t ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o"},"content":{"rendered":"

C\u00e1ch t\u1ea3n nhi\u1ec7t ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o: t\u00ecm hi\u1ec3u nguy\u00ean l\u00fd v\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u1ea3n nhi\u1ec7t trong k\u1ef9 thu\u1eadt nhi\u1ec7t, gi\u00fap duy tr\u00ec hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb hi\u1ec7u qu\u1ea3.<\/p>\n

\"C\u00e1ch<\/p>\n

C\u00e1ch t\u1ea3n nhi\u1ec7t ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o<\/h2>\n

T\u1ea3n nhi\u1ec7t l\u00e0 qu\u00e1 tr\u00ecnh c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng an to\u00e0n v\u00e0 \u1ed5n \u0111\u1ecbnh cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed v\u00e0 c\u01a1 kh\u00ed. Hi\u1ec3u c\u00e1ch t\u1ea3n nhi\u1ec7t ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng ch\u1ec9 gi\u00fap b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb, m\u00e0 c\u00f2n c\u00f3 th\u1ec3 t\u0103ng hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a ch\u00fang. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 c\u00e1c nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a c\u00e1ch t\u1ea3n nhi\u1ec7t ho\u1ea1t \u0111\u1ed9ng.<\/p>\n

C\u00e1c lo\u1ea1i t\u1ea3n nhi\u1ec7t<\/h2>\n

C\u00f3 ba ph\u01b0\u01a1ng ph\u00e1p t\u1ea3n nhi\u1ec7t ch\u00ednh: d\u1eabn nhi\u1ec7t, \u0111\u1ed1i l\u01b0u v\u00e0 b\u1ee9c x\u1ea1.<\/p>\n

<\/p>\n

  • D\u1eabn nhi\u1ec7t:<\/b> \u0110\u00e2y l\u00e0 qu\u00e1 tr\u00ecnh nhi\u1ec7t di chuy\u1ec3n qua v\u1eadt li\u1ec7u. Khi m\u1ed9t v\u1eadt ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec7t \u0111\u1ed9 cao, nhi\u1ec7t n\u0103ng s\u1ebd di chuy\u1ec3n t\u1eeb v\u00f9ng nhi\u1ec7t \u0111\u1ed9 cao sang v\u00f9ng nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n. V\u00ed d\u1ee5, trong m\u1ed9t t\u1ea3n nhi\u1ec7t b\u1eb1ng kim lo\u1ea1i, nhi\u1ec7t t\u1eeb ngu\u1ed3n nhi\u1ec7t s\u1ebd \u0111\u01b0\u1ee3c d\u1eabn qua v\u1eadt li\u1ec7u kim lo\u1ea1i, sau \u0111\u00f3 \u0111\u01b0\u1ee3c tho\u00e1t ra ngo\u00e0i m\u00f4i tr\u01b0\u1eddng xung quanh.<\/li>\n
  • \u0110\u1ed1i l\u01b0u:<\/b> \u0110\u1ed1i l\u01b0u y\u00eau c\u1ea7u m\u1ed9t ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed \u0111\u1ec3 truy\u1ec1n nhi\u1ec7t. Trong h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t b\u1eb1ng qu\u1ea1t ho\u1eb7c t\u1ea3n nhi\u1ec7t n\u01b0\u1edbc, ch\u1ea5t l\u1ecfng l\u00e0 kh\u00f4ng kh\u00ed ho\u1eb7c n\u01b0\u1edbc s\u1ebd h\u00fat nhi\u1ec7t t\u1eeb ngu\u1ed3n n\u00f3ng v\u00e0 sau \u0111\u00f3 tho\u00e1t ra ngo\u00e0i m\u00f4i tr\u01b0\u1eddng xung quanh, mang theo nhi\u1ec7t n\u0103ng.<\/li>\n
  • B\u1ee9c x\u1ea1:<\/b> \u0110\u00e2y l\u00e0 qu\u00e1 tr\u00ecnh nhi\u1ec7t \u0111\u01b0\u1ee3c truy\u1ec1n qua kh\u00f4ng gian b\u1eb1ng c\u00e1c s\u00f3ng \u0111i\u1ec7n t\u1eeb. M\u1ecdi v\u1eadt \u0111\u1ec1u ph\u00e1t ra b\u1ee9c x\u1ea1 nhi\u1ec7t, nh\u01b0ng qu\u00e1 tr\u00ecnh n\u00e0y th\u01b0\u1eddng kh\u00f4ng hi\u1ec7u qu\u1ea3 b\u1eb1ng d\u1eabn nhi\u1ec7t v\u00e0 \u0111\u1ed1i l\u01b0u trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p.<\/li>\n

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

    T\u1ea3n nhi\u1ec7t trong c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed<\/h2>\n

    Trong c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, nh\u01b0 m\u00e1y t\u00ednh v\u00e0 \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng, vi\u1ec7c t\u1ea3n nhi\u1ec7t l\u00e0 c\u1ef1c k\u1ef3 quan tr\u1ecdng \u0111\u1ec3 duy tr\u00ec hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a linh ki\u1ec7n. C\u00e1c lo\u1ea1i t\u1ea3n nhi\u1ec7t \u0111i\u1ec3n h\u00ecnh bao g\u1ed3m:<\/p>\n

    <\/p>\n

  • Qu\u1ea1t t\u1ea3n nhi\u1ec7t:<\/b> \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t, qu\u1ea1t t\u1ea3n nhi\u1ec7t gi\u00fap t\u0103ng c\u01b0\u1eddng qu\u00e1 tr\u00ecnh \u0111\u1ed1i l\u01b0u b\u1eb1ng c\u00e1ch \u0111\u1ea9y kh\u00f4ng kh\u00ed qua b\u1ed9 ph\u1eadn nhi\u1ec7t, gi\u00fap nhi\u1ec7t \u0111\u01b0\u1ee3c di chuy\u1ec3n ra kh\u1ecfi linh ki\u1ec7n nhanh h\u01a1n.<\/li>\n
  • T\u1ea3n nhi\u1ec7t b\u1eb1ng dung d\u1ecbch:<\/b> M\u1ed9t h\u1ec7 th\u1ed1ng ch\u1ee9a ch\u1ea5t l\u1ecfng, th\u01b0\u1eddng l\u00e0 n\u01b0\u1edbc, di chuy\u1ec3n qua c\u00e1c \u1ed1ng d\u1eabn nhi\u1ec7t g\u1eafn li\u1ec1n v\u1edbi c\u00e1c b\u1ed9 ph\u1eadn nhi\u1ec7t. Nhi\u1ec7t \u0111\u01b0\u1ee3c h\u1ea5p th\u1ee5 b\u1edfi ch\u1ea5t l\u1ecfng v\u00e0 sau \u0111\u00f3 \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00f3ng ra ngo\u00e0i qua m\u1ed9t t\u1ea3n nhi\u1ec7t ho\u1eb7c b\u1ed9 l\u00e0m m\u00e1t.<\/li>\n
  • T\u1ea3n nhi\u1ec7t th\u1ee5 \u0111\u1ed9ng:<\/b> \u0110\u00e2y l\u00e0 nh\u1eefng thi\u1ebft k\u1ebf kh\u00f4ng y\u00eau c\u1ea7u ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng b\u1ed5 sung nh\u01b0 qu\u1ea1t ho\u1eb7c b\u01a1m n\u01b0\u1edbc. Thay v\u00e0o \u0111\u00f3, ch\u00fang s\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u c\u00f3 kh\u1ea3 n\u0103ng d\u1eabn nhi\u1ec7t t\u1ed1t v\u00e0 b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac l\u1edbn \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a qu\u00e1 tr\u00ecnh t\u1ea3n nhi\u1ec7t.<\/li>\n

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

    Ph\u01b0\u01a1ng tr\u00ecnh d\u1eabn nhi\u1ec7t<\/h2>\n

    Ph\u01b0\u01a1ng tr\u00ecnh c\u01a1 b\u1ea3n nh\u1ea5t m\u00f4 t\u1ea3 qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t qua d\u1eabn nhi\u1ec7t l\u00e0 ph\u01b0\u01a1ng tr\u00ecnh Fourier:<\/p>\n

    \\(q = -k \\cdot A \\cdot \\frac{dT}{dx}\\)<\/p>\n

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

    <\/p>\n

  • \\(q\\) l\u00e0 l\u01b0\u1ee3ng nhi\u1ec7t truy\u1ec1n (trong \u0111\u01a1n v\u1ecb th\u1eddi gian)<\/li>\n
  • \\(k\\) l\u00e0 h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u<\/li>\n
  • \\(A\\) l\u00e0 di\u1ec7n t\u00edch ti\u1ebfp x\u00fac<\/li>\n
  • \\(\\frac{dT}{dx}\\) l\u00e0 gradient nhi\u1ec7t \u0111\u1ed9<\/li>\n

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

    K\u1ebft lu\u1eadn<\/h2>\n

    T\u1ea3n nhi\u1ec7t l\u00e0 m\u1ed9t kh\u00eda c\u1ea1nh quan tr\u1ecdng trong thi\u1ebft k\u1ebf v\u00e0 v\u1eadn h\u00e0nh c\u1ee7a nhi\u1ec1u h\u1ec7 th\u1ed1ng c\u00f4ng ngh\u1ec7. Hi\u1ec3u c\u00e1ch t\u1ea3n nhi\u1ec7t ho\u1ea1t \u0111\u1ed9ng gi\u00fap b\u1ea1n t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb. H\u00e3y lu\u00f4n ch\u00fa \u00fd \u0111\u1ebfn vi\u1ec7c t\u1ea3n nhi\u1ec7t \u0111\u1ec3 duy tr\u00ec s\u1ef1 \u1ed5n \u0111\u1ecbnh v\u00e0 hi\u1ec7u qu\u1ea3 trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng ngh\u1ec7 c\u1ee7a b\u1ea1n.<\/p>\n","protected":false},"excerpt":{"rendered":"

    C\u00e1ch t\u1ea3n nhi\u1ec7t ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o: t\u00ecm hi\u1ec3u nguy\u00ean l\u00fd v\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u1ea3n nhi\u1ec7t trong k\u1ef9 thu\u1eadt nhi\u1ec7t, gi\u00fap duy tr\u00ec hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb hi\u1ec7u qu\u1ea3.<\/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":"\nC\u00e1ch t\u1ea3n nhi\u1ec7t ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o<\/title>\n<meta name=\"description\" content=\"C\u00e1ch t\u1ea3n nhi\u1ec7t ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o: t\u00ecm hi\u1ec3u nguy\u00ean l\u00fd v\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u1ea3n nhi\u1ec7t trong k\u1ef9 thu\u1eadt nhi\u1ec7t, gi\u00fap duy tr\u00ec hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb hi\u1ec7u qu\u1ea3.\" \/>\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\/cach-tan-nhiet-hoat-dong-nhu-the-nao\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u00e1ch t\u1ea3n nhi\u1ec7t ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o\" \/>\n<meta property=\"og:description\" content=\"C\u00e1ch t\u1ea3n nhi\u1ec7t ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o: t\u00ecm hi\u1ec3u nguy\u00ean l\u00fd v\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u1ea3n nhi\u1ec7t trong k\u1ef9 thu\u1eadt nhi\u1ec7t, gi\u00fap duy tr\u00ec hi\u1ec7u su\u1ea5t v\u00e0 b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb hi\u1ec7u qu\u1ea3.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.thermal-engineering.org\/vi\/cach-tan-nhiet-hoat-dong-nhu-the-nao\/\" \/>\n<meta property=\"og:site_name\" content=\"Thermal Engineering\" \/>\n<meta property=\"article:published_time\" content=\"2024-07-27T17:49:50+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/cach_tan_nhiet_hoat_dong_nhu_the_nao.png\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\">\n\t<meta name=\"twitter:data1\" content=\"Nick Connor\">\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\">\n\t<meta name=\"twitter:data2\" content=\"4 minutes\">\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\",\"url\":\"https:\/\/www.thermal-engineering.org\/fr\/\",\"name\":\"Thermal Engineering\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":\"https:\/\/www.thermal-engineering.org\/fr\/?s={search_term_string}\",\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"vi-VN\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/cach-tan-nhiet-hoat-dong-nhu-the-nao\/#primaryimage\",\"inLanguage\":\"vi-VN\",\"url\":\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/cach_tan_nhiet_hoat_dong_nhu_the_nao.png\",\"width\":1000,\"height\":1000,\"caption\":\"C\\u00e1ch t\\u1ea3n nhi\\u1ec7t ho\\u1ea1t \\u0111\\u1ed9ng nh\\u01b0 th\\u1ebf n\\u00e0o\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/cach-tan-nhiet-hoat-dong-nhu-the-nao\/#webpage\",\"url\":\"https:\/\/www.thermal-engineering.org\/vi\/cach-tan-nhiet-hoat-dong-nhu-the-nao\/\",\"name\":\"C\\u00e1ch t\\u1ea3n nhi\\u1ec7t ho\\u1ea1t \\u0111\\u1ed9ng nh\\u01b0 th\\u1ebf n\\u00e0o\",\"isPartOf\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/cach-tan-nhiet-hoat-dong-nhu-the-nao\/#primaryimage\"},\"datePublished\":\"2024-07-27T17:49:50+00:00\",\"dateModified\":\"2024-07-27T17:49:50+00:00\",\"author\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\"},\"description\":\"C\\u00e1ch t\\u1ea3n nhi\\u1ec7t ho\\u1ea1t \\u0111\\u1ed9ng nh\\u01b0 th\\u1ebf n\\u00e0o: t\\u00ecm hi\\u1ec3u nguy\\u00ean l\\u00fd v\\u00e0 ph\\u01b0\\u01a1ng ph\\u00e1p t\\u1ea3n nhi\\u1ec7t trong k\\u1ef9 thu\\u1eadt nhi\\u1ec7t, gi\\u00fap duy tr\\u00ec hi\\u1ec7u su\\u1ea5t v\\u00e0 b\\u1ea3o v\\u1ec7 thi\\u1ebft b\\u1ecb hi\\u1ec7u qu\\u1ea3.\",\"inLanguage\":\"vi-VN\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.thermal-engineering.org\/vi\/cach-tan-nhiet-hoat-dong-nhu-the-nao\/\"]}]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\",\"name\":\"Nick Connor\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#personlogo\",\"inLanguage\":\"vi-VN\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/84c0dec310b44b65da29dc9df6925239?s=96&d=mm&r=g\",\"caption\":\"Nick Connor\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","_links":{"self":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/posts\/710104"}],"collection":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/comments?post=710104"}],"version-history":[{"count":0,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/posts\/710104\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/media?parent=710104"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/categories?post=710104"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/tags?post=710104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}