{"id":700737,"date":"2024-10-06T12:32:40","date_gmt":"2024-10-06T11:32:40","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=700737"},"modified":"2024-10-06T12:32:40","modified_gmt":"2024-10-06T11:32:40","slug":"truyen-nhiet-trong-tuabin-khi","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/truyen-nhiet-trong-tuabin-khi\/","title":{"rendered":"Truy\u1ec1n nhi\u1ec7t trong tuabin kh\u00ed"},"content":{"rendered":"

Truy\u1ec1n nhi\u1ec7t trong tuabin kh\u00ed: Gi\u1ea3i th\u00edch c\u00e1ch nhi\u1ec7t truy\u1ec1n v\u00e0 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn hi\u1ec7u su\u1ea5t tuabin kh\u00ed, gi\u00fap t\u0103ng hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng v\u00e0 gi\u1ea3m thi\u1ec3u ti\u00eau th\u1ee5 nhi\u00ean li\u1ec7u.<\/p>\n

\"Truy\u1ec1n<\/p>\n

Truy\u1ec1n nhi\u1ec7t trong tuabin kh\u00ed<\/h2>\n

Tuabin kh\u00ed l\u00e0 m\u1ed9t ph\u1ea7n quan tr\u1ecdng c\u1ee7a nhi\u1ec1u h\u1ec7 th\u1ed1ng n\u0103ng l\u01b0\u1ee3ng v\u00e0 c\u00f4ng nghi\u1ec7p hi\u1ec7n \u0111\u1ea1i, v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a ch\u00fang ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u v\u1ec1 c\u00e1c nguy\u00ean l\u00fd c\u01a1 b\u1ea3n v\u00e0 c\u01a1 ch\u1ebf truy\u1ec1n nhi\u1ec7t trong tuabin kh\u00ed.<\/p>\n

C\u00e1c nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a truy\u1ec1n nhi\u1ec7t<\/h2>\n

Truy\u1ec1n nhi\u1ec7t l\u00e0 qu\u00e1 tr\u00ecnh n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t di chuy\u1ec3n t\u1eeb v\u00f9ng c\u00f3 nhi\u1ec7t \u0111\u1ed9 cao sang v\u00f9ng c\u00f3 nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n. C\u00f3 ba c\u01a1 ch\u1ebf ch\u00ednh c\u1ee7a truy\u1ec1n nhi\u1ec7t:<\/p>\n

<\/p>\n

  • Truy\u1ec1n nhi\u1ec7t d\u1eabn (Conduction)<\/li>\n
  • Truy\u1ec1n nhi\u1ec7t \u0111\u1ed1i l\u01b0u (Convection)<\/li>\n
  • Truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 (Radiation)<\/li>\n

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

    Trong tuabin kh\u00ed, c\u1ea3 ba c\u01a1 ch\u1ebf n\u00e0y \u0111\u1ec1u c\u00f3 th\u1ec3 x\u1ea3y ra, nh\u01b0ng truy\u1ec1n nhi\u1ec7t \u0111\u1ed1i l\u01b0u v\u00e0 b\u1ee9c x\u1ea1 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng nh\u1ea5t.<\/p>\n

    Truy\u1ec1n nhi\u1ec7t d\u1eabn<\/h2>\n

    Truy\u1ec1n nhi\u1ec7t d\u1eabn l\u00e0 qu\u00e1 tr\u00ecnh nhi\u1ec7t di chuy\u1ec3n qua m\u1ed9t v\u1eadt li\u1ec7u do s\u1ef1 kh\u00e1c bi\u1ec7t nhi\u1ec7t \u0111\u1ed9 gi\u1eefa c\u00e1c ph\u1ea7n c\u1ee7a v\u1eadt li\u1ec7u \u0111\u00f3. Trong tuabin kh\u00ed, truy\u1ec1n nhi\u1ec7t d\u1eabn ch\u1ee7 y\u1ebfu x\u1ea3y ra trong c\u00e1c b\u1ed9 ph\u1eadn c\u1ee9ng nh\u01b0 c\u00e1nh tuabin v\u00e0 v\u1ecf b\u1ea3o v\u1ec7. C\u00f4ng th\u1ee9c truy\u1ec1n nhi\u1ec7t d\u1eabn theo \u0111\u1ecbnh lu\u1eadt Fourier:<\/p>\n

    q = -k \\frac{\\partial T}{\\partial x}<\/p>\n

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

    <\/p>\n

  • q: D\u00f2ng nhi\u1ec7t<\/li>\n
  • k: H\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t<\/li>\n
  • \\(\\partial T \/ \\partial x\\): Gradient nhi\u1ec7t \u0111\u1ed9 theo h\u01b0\u1edbng x<\/li>\n

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

    Truy\u1ec1n nhi\u1ec7t \u0111\u1ed1i l\u01b0u<\/h2>\n

    Truy\u1ec1n nhi\u1ec7t \u0111\u1ed1i l\u01b0u x\u1ea3y ra khi nhi\u1ec7t di chuy\u1ec3n t\u1eeb b\u1ec1 m\u1eb7t r\u1eafn sang ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed. Trong tuabin kh\u00ed, truy\u1ec1n nhi\u1ec7t \u0111\u1ed1i l\u01b0u ch\u1ee7 y\u1ebfu x\u1ea3y ra gi\u1eefa kh\u00ed n\u00f3ng ch\u1ea3y qua c\u00e1c c\u00e1nh tuabin v\u00e0 b\u1ec1 m\u1eb7t c\u1ee7a ch\u00fang. C\u00f4ng th\u1ee9c truy\u1ec1n nhi\u1ec7t \u0111\u1ed1i l\u01b0u \u0111\u01b0\u1ee3c di\u1ec5n \u0111\u1ea1t qua \u0111\u1ecbnh lu\u1eadt Newton v\u1ec1 l\u00e0m m\u00e1t:<\/p>\n

    Q = h A \\Delta T<\/p>\n

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

    <\/p>\n

  • Q: D\u00f2ng nhi\u1ec7t<\/li>\n
  • h: H\u1ec7 s\u1ed1 truy\u1ec1n nhi\u1ec7t \u0111\u1ed1i l\u01b0u<\/li>\n
  • A: Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t trao \u0111\u1ed5i nhi\u1ec7t<\/li>\n
  • \\(\\Delta T\\): Ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 gi\u1eefa b\u1ec1 m\u1eb7t v\u00e0 m\u00f4i ch\u1ea5t<\/li>\n

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

    Truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1<\/h2>\n

    Truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 l\u00e0 qu\u00e1 tr\u00ecnh nhi\u1ec7t di chuy\u1ec3n qua s\u00f3ng \u0111i\u1ec7n t\u1eeb. Trong tuabin kh\u00ed, truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 x\u1ea3y ra gi\u1eefa c\u00e1c b\u1ec1 m\u1eb7t n\u00f3ng b\u00ean trong tuabin v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn kh\u00e1c. C\u00f4ng th\u1ee9c truy\u1ec1n nhi\u1ec7t b\u1ee9c x\u1ea1 theo \u0111\u1ecbnh lu\u1eadt Stefan-Boltzmann:<\/p>\n

    Q = \\varepsilon \\sigma A (T\\_1^4 – T\\_2^4)<\/p>\n

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

    <\/p>\n

  • Q: D\u00f2ng nhi\u1ec7t<\/li>\n
  • \\(\\varepsilon\\): H\u1ec7 s\u1ed1 ph\u00e1t x\u1ea1<\/li>\n
  • \\(\\sigma\\): H\u1eb1ng s\u1ed1 Stefan-Boltzmann<\/li>\n
  • A: Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t b\u1ee9c x\u1ea1<\/li>\n
  • \\(T\\_{1}\\), \\(T\\_{2}\\): Nhi\u1ec7t \u0111\u1ed9 c\u1ee7a c\u00e1c b\u1ec1 m\u1eb7t<\/li>\n

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

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

    Hi\u1ec3u r\u00f5 v\u1ec1 c\u00e1c c\u01a1 ch\u1ebf truy\u1ec1n nhi\u1ec7t trong tuabin kh\u00ed l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a h\u1ec7 th\u1ed1ng. B\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng c\u00e1c nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a truy\u1ec1n nhi\u1ec7t d\u1eabn, \u0111\u1ed1i l\u01b0u v\u00e0 b\u1ee9c x\u1ea1, c\u00e1c k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 thi\u1ebft k\u1ebf v\u00e0 v\u1eadn h\u00e0nh tuabin kh\u00ed m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Truy\u1ec1n nhi\u1ec7t trong tuabin kh\u00ed: Gi\u1ea3i th\u00edch c\u00e1ch nhi\u1ec7t truy\u1ec1n v\u00e0 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn hi\u1ec7u su\u1ea5t tuabin kh\u00ed, gi\u00fap t\u0103ng hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng v\u00e0 gi\u1ea3m thi\u1ec3u ti\u00eau th\u1ee5 nhi\u00ean li\u1ec7u.<\/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":"\nTruy\u1ec1n nhi\u1ec7t trong tuabin kh\u00ed<\/title>\n<meta name=\"description\" content=\"Truy\u1ec1n nhi\u1ec7t trong tuabin kh\u00ed: Gi\u1ea3i th\u00edch c\u00e1ch nhi\u1ec7t truy\u1ec1n v\u00e0 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn hi\u1ec7u su\u1ea5t tuabin kh\u00ed, gi\u00fap t\u0103ng hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng v\u00e0 gi\u1ea3m thi\u1ec3u ti\u00eau th\u1ee5 nhi\u00ean li\u1ec7u.\" \/>\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\/truyen-nhiet-trong-tuabin-khi\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Truy\u1ec1n nhi\u1ec7t trong tuabin kh\u00ed\" \/>\n<meta property=\"og:description\" content=\"Truy\u1ec1n nhi\u1ec7t trong tuabin kh\u00ed: Gi\u1ea3i th\u00edch c\u00e1ch nhi\u1ec7t truy\u1ec1n v\u00e0 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn hi\u1ec7u su\u1ea5t tuabin kh\u00ed, gi\u00fap t\u0103ng hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng v\u00e0 gi\u1ea3m thi\u1ec3u ti\u00eau th\u1ee5 nhi\u00ean li\u1ec7u.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.thermal-engineering.org\/vi\/truyen-nhiet-trong-tuabin-khi\/\" \/>\n<meta property=\"og:site_name\" content=\"Thermal Engineering\" \/>\n<meta property=\"article:published_time\" content=\"2024-10-06T11:32:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/truyen_nhiet_trong_tuabin_khi.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=\"3 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\/truyen-nhiet-trong-tuabin-khi\/#primaryimage\",\"inLanguage\":\"vi-VN\",\"url\":\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/truyen_nhiet_trong_tuabin_khi.png\",\"width\":1000,\"height\":1000,\"caption\":\"Truy\\u1ec1n nhi\\u1ec7t trong tuabin kh\\u00ed\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/truyen-nhiet-trong-tuabin-khi\/#webpage\",\"url\":\"https:\/\/www.thermal-engineering.org\/vi\/truyen-nhiet-trong-tuabin-khi\/\",\"name\":\"Truy\\u1ec1n nhi\\u1ec7t trong tuabin kh\\u00ed\",\"isPartOf\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/vi\/truyen-nhiet-trong-tuabin-khi\/#primaryimage\"},\"datePublished\":\"2024-10-06T11:32:40+00:00\",\"dateModified\":\"2024-10-06T11:32:40+00:00\",\"author\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\"},\"description\":\"Truy\\u1ec1n nhi\\u1ec7t trong tuabin kh\\u00ed: Gi\\u1ea3i th\\u00edch c\\u00e1ch nhi\\u1ec7t truy\\u1ec1n v\\u00e0 t\\u00e1c \\u0111\\u1ed9ng \\u0111\\u1ebfn hi\\u1ec7u su\\u1ea5t tuabin kh\\u00ed, gi\\u00fap t\\u0103ng hi\\u1ec7u qu\\u1ea3 n\\u0103ng l\\u01b0\\u1ee3ng v\\u00e0 gi\\u1ea3m thi\\u1ec3u ti\\u00eau th\\u1ee5 nhi\\u00ean li\\u1ec7u.\",\"inLanguage\":\"vi-VN\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.thermal-engineering.org\/vi\/truyen-nhiet-trong-tuabin-khi\/\"]}]},{\"@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\/700737"}],"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=700737"}],"version-history":[{"count":0,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/posts\/700737\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/media?parent=700737"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/categories?post=700737"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/vi\/wp-json\/wp\/v2\/tags?post=700737"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}