{"id":727962,"date":"2024-10-22T09:32:21","date_gmt":"2024-10-22T08:32:21","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=727962"},"modified":"2024-10-22T09:32:21","modified_gmt":"2024-10-22T08:32:21","slug":"8%e7%a7%8d%e4%bc%a0%e7%83%ad%e7%b3%bb%e6%95%b0%e5%8f%8a%e5%85%b6%e8%ae%a1%e7%ae%97%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/zh-hans\/8%e7%a7%8d%e4%bc%a0%e7%83%ad%e7%b3%bb%e6%95%b0%e5%8f%8a%e5%85%b6%e8%ae%a1%e7%ae%97%e6%96%b9%e6%b3%95\/","title":{"rendered":"8\u79cd\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5"},"content":{"rendered":"<p class=\"sidekick\">8\u79cd\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5&#8221;\u4ecb\u7ecd\u4e86\u516b\u79cd\u5e38\u89c1\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5\uff0c\u6df1\u5165\u89e3\u6790\u5404\u7c7b\u4f20\u70ed\u73b0\u8c61\uff0c\u5e2e\u52a9\u8bfb\u8005\u638c\u63e1\u70ed\u80fd\u4f20\u9012\u7684\u57fa\u672c\u539f\u7406\u548c\u516c\u5f0f\u3002<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/8\u79cd\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5.png\" alt=\"8\u79cd\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>8\u79cd\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5<\/h2>\n<p>\u5728\u70ed\u5de5\u5b66\u4e2d\uff0c\u4f20\u70ed\u7cfb\u6570\u662f\u8861\u91cf\u70ed\u91cf\u4ece\u4e00\u4e2a\u7269\u4f53\u4f20\u9012\u5230\u53e6\u4e00\u4e2a\u7269\u4f53\u7684\u6548\u7387\u7684\u91cd\u8981\u6307\u6807\u3002\u4e86\u89e3\u4e0d\u540c\u7c7b\u578b\u7684\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5\u5bf9\u5de5\u7a0b\u5e94\u7528\u81f3\u5173\u91cd\u8981\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u516b\u79cd\u5e38\u89c1\u7684\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5\u3002<\/p>\n<h2>1. \u5bfc\u70ed\u7cfb\u6570 (Thermal Conductivity)<\/h2>\n<p>\u5bfc\u70ed\u7cfb\u6570\u8868\u793a\u6750\u6599\u4f20\u5bfc\u70ed\u91cf\u7684\u80fd\u529b\uff0c\u901a\u5e38\u7528\u7b26\u53f7 k \u8868\u793a\uff0c\u5355\u4f4d\u4e3a W\/(m\u00b7K)\u3002\u5bfc\u70ed\u7cfb\u6570\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<\/p>\n<p><code>q = -k * \\frac{\\Delta T}{\\Delta x}<\/code><\/p>\n<p>\u5176\u4e2d\uff0cq \u662f\u4f20\u9012\u7684\u70ed\u6d41\u5bc6\u5ea6\uff0c\u0394T \u662f\u6e29\u5ea6\u5dee\uff0c\u0394x \u662f\u8ddd\u79bb\u3002<\/p>\n<h2>2. \u5bf9\u6d41\u4f20\u70ed\u7cfb\u6570 (Convective Heat Transfer Coefficient)<\/h2>\n<p>\u5bf9\u6d41\u4f20\u70ed\u7cfb\u6570\u7528\u7b26\u53f7 h \u8868\u793a\uff0c\u5355\u4f4d\u4e3a W\/(m<sup>2<\/sup>\u00b7K)\u3002\u5176\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<\/p>\n<p><code>q = h * A * \\Delta T<\/code><\/p>\n<p>\u5176\u4e2d\uff0cq \u662f\u4f20\u9012\u7684\u70ed\u91cf\uff0cA \u662f\u4f20\u70ed\u9762\u79ef\uff0c\u0394T \u662f\u6e29\u5ea6\u5dee\u3002<\/p>\n<h2>3. \u8f90\u5c04\u4f20\u70ed\u7cfb\u6570 (Radiative Heat Transfer Coefficient)<\/h2>\n<p>\u8f90\u5c04\u4f20\u70ed\u7cfb\u6570\u7528\u7b26\u53f7 \u025b \u8868\u793a\uff0c\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<\/p>\n<p><code>q = \\epsilon * \\sigma * A * (T_1^4 - T_2^4)<\/code><\/p>\n<p>\u5176\u4e2d\uff0c\u025b \u662f\u53d1\u5c04\u7387\uff0c\u03c3 \u662f\u65af\u7279\u85e9-\u73bb\u5c14\u5179\u66fc\u5e38\u6570 (5.67 x 10<sup>-8<\/sup> W\/(m<sup>2<\/sup>\u00b7K<sup>4<\/sup>))\uff0cA \u662f\u9762\u79ef\uff0cT<sub>1<\/sub> \u548c T<sub>2<\/sub> \u5206\u522b\u662f\u4e24\u4e2a\u7269\u4f53\u7684\u6e29\u5ea6\u3002<\/p>\n<h2>4. \u603b\u4f20\u70ed\u7cfb\u6570 (Overall Heat Transfer Coefficient)<\/h2>\n<p>\u603b\u4f20\u70ed\u7cfb\u6570\uff0c\u5e38\u7528 U \u8868\u793a\uff0c\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<\/p>\n<p><code>\\frac{1}{U} = \\frac{1}{h_1} + \\frac{d}{k} + \\frac{1}{h_2}<\/code><\/p>\n<p>\u5176\u4e2d\uff0ch<sub>1<\/sub> \u548c h<sub>2<\/sub> \u662f\u4e24\u4e2a\u6d41\u4f53\u7684\u5bf9\u6d41\u4f20\u70ed\u7cfb\u6570\uff0cd \u662f\u58c1\u539a\uff0ck \u662f\u58c1\u6750\u7684\u5bfc\u70ed\u7cfb\u6570\u3002<\/p>\n<h2>5. \u63a5\u89e6\u4f20\u70ed\u7cfb\u6570 (Thermal Contact Conductance)<\/h2>\n<p>\u63a5\u89e6\u4f20\u70ed\u7cfb\u6570 h<sub>c<\/sub> \u7528\u4e8e\u63cf\u8ff0\u4e24\u63a5\u89e6\u8868\u9762\u4e4b\u95f4\u7684\u4f20\u70ed\uff0c\u8ba1\u7b97\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<p><code>h_c = \\frac{q}{A * \\Delta T}<\/code><\/p>\n<p>\u5176\u4e2d\uff0cq \u662f\u4f20\u9012\u7684\u70ed\u91cf\uff0cA \u662f\u63a5\u89e6\u9762\u79ef\uff0c\u0394T \u662f\u6e29\u5ea6\u5dee\u3002<\/p>\n<h2>6. \u5e73\u677f\u4f20\u70ed\u7cfb\u6570 (Heat Transfer Coefficient for Flat Plate)<\/h2>\n<p>\u5bf9\u4e8e\u6d41\u4f53\u6d41\u8fc7\u5e73\u677f\u65f6\u7684\u4f20\u70ed\u7cfb\u6570\uff0c\u5176\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<\/p>\n<p><code>Nu = \\frac{hL}{k}<\/code><\/p>\n<p>\u5176\u4e2d\uff0cNu \u662f\u52aa\u585e\u5c14\u6570\uff0ch \u662f\u5bf9\u6d41\u4f20\u70ed\u7cfb\u6570\uff0cL \u662f\u7279\u5f81\u957f\u5ea6\uff0ck \u662f\u6d41\u4f53\u5bfc\u70ed\u7cfb\u6570\u3002<\/p>\n<h2>7. \u5706\u7ba1\u4f20\u70ed\u7cfb\u6570 (Heat Transfer Coefficient for Circular Tube)<\/h2>\n<p>\u5bf9\u4e8e\u5185\u90e8\u6d41\u4f53\u6d41\u8fc7\u5706\u7ba1\u65f6\u7684\u4f20\u70ed\u7cfb\u6570\uff0c\u5176\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<\/p>\n<p><code>Nu = 0.023 * Re^{0.8} * Pr^{0.3}<\/code><\/p>\n<p>\u5176\u4e2d\uff0cNu \u662f\u52aa\u585e\u5c14\u6570\uff0cRe \u662f\u96f7\u8bfa\u6570\uff0cPr \u662f\u666e\u6717\u7279\u6570\u3002<\/p>\n<h2>8. \u87ba\u65cb\u7ba1\u4f20\u70ed\u7cfb\u6570 (Heat Transfer Coefficient for Helical Coil)<\/h2>\n<p>\u87ba\u65cb\u7ba1\u5185\u7684\u4f20\u70ed\u7cfb\u6570\u8ba1\u7b97\u7565\u6709\u4e0d\u540c\uff0c\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<\/p>\n<p><code>Nu = 0.021 * Re^{0.7} * Pr^{0.36} * ( \\frac{D_H}{d} )^{0.1}<\/code><\/p>\n<p>\u5176\u4e2d\uff0cD<sub>H<\/sub> \u662f\u87ba\u65cb\u7ba1\u7684\u6c34\u529b\u76f4\u5f84\uff0cd \u662f\u87ba\u65cb\u7ba1\u7684\u76f4\u5f84\u3002<\/p>\n<p>\u4e86\u89e3\u548c\u8ba1\u7b97\u8fd9\u4e9b\u4f20\u70ed\u7cfb\u6570\u662f\u70ed\u5de5\u5b66\u91cd\u8981\u7684\u4e00\u90e8\u5206\uff0c\u5bf9\u4e8e\u8bbe\u8ba1\u548c\u4f18\u5316\u5404\u79cd\u70ed\u4ea4\u6362\u8bbe\u5907\u5177\u6709\u91cd\u8981\u610f\u4e49\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>8\u79cd\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5&#8221;\u4ecb\u7ecd\u4e86\u516b\u79cd\u5e38\u89c1\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5\uff0c\u6df1\u5165\u89e3\u6790\u5404\u7c7b\u4f20\u70ed\u73b0\u8c61\uff0c\u5e2e\u52a9\u8bfb\u8005\u638c\u63e1\u70ed\u80fd\u4f20\u9012\u7684\u57fa\u672c\u539f\u7406\u548c\u516c\u5f0f\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[134],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>8\u79cd\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5<\/title>\n<meta name=\"description\" content=\"8\u79cd\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5&quot;\u4ecb\u7ecd\u4e86\u516b\u79cd\u5e38\u89c1\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5\uff0c\u6df1\u5165\u89e3\u6790\u5404\u7c7b\u4f20\u70ed\u73b0\u8c61\uff0c\u5e2e\u52a9\u8bfb\u8005\u638c\u63e1\u70ed\u80fd\u4f20\u9012\u7684\u57fa\u672c\u539f\u7406\u548c\u516c\u5f0f\u3002\" \/>\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\/zh-hans\/8\u79cd\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"8\u79cd\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5\" \/>\n<meta property=\"og:description\" content=\"8\u79cd\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5&quot;\u4ecb\u7ecd\u4e86\u516b\u79cd\u5e38\u89c1\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5\uff0c\u6df1\u5165\u89e3\u6790\u5404\u7c7b\u4f20\u70ed\u73b0\u8c61\uff0c\u5e2e\u52a9\u8bfb\u8005\u638c\u63e1\u70ed\u80fd\u4f20\u9012\u7684\u57fa\u672c\u539f\u7406\u548c\u516c\u5f0f\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.thermal-engineering.org\/zh-hans\/8\u79cd\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5\/\" \/>\n<meta property=\"og:site_name\" content=\"Thermal Engineering\" \/>\n<meta property=\"article:published_time\" content=\"2024-10-22T08:32:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/8\u79cd\u4f20\u70ed\u7cfb\u6570\u53ca\u5176\u8ba1\u7b97\u65b9\u6cd5.png\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\">\n\t<meta name=\"twitter:data1\" content=\"Nick Connor\">\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\">\n\t<meta name=\"twitter:data2\" content=\"1\u5206\">\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\":\"zh-CN\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.thermal-engineering.org\/zh-hans\/8%e7%a7%8d%e4%bc%a0%e7%83%ad%e7%b3%bb%e6%95%b0%e5%8f%8a%e5%85%b6%e8%ae%a1%e7%ae%97%e6%96%b9%e6%b3%95\/#primaryimage\",\"inLanguage\":\"zh-CN\",\"url\":\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/8\\u79cd\\u4f20\\u70ed\\u7cfb\\u6570\\u53ca\\u5176\\u8ba1\\u7b97\\u65b9\\u6cd5.png\",\"width\":1000,\"height\":1000,\"caption\":\"8\\u79cd\\u4f20\\u70ed\\u7cfb\\u6570\\u53ca\\u5176\\u8ba1\\u7b97\\u65b9\\u6cd5\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.thermal-engineering.org\/zh-hans\/8%e7%a7%8d%e4%bc%a0%e7%83%ad%e7%b3%bb%e6%95%b0%e5%8f%8a%e5%85%b6%e8%ae%a1%e7%ae%97%e6%96%b9%e6%b3%95\/#webpage\",\"url\":\"https:\/\/www.thermal-engineering.org\/zh-hans\/8%e7%a7%8d%e4%bc%a0%e7%83%ad%e7%b3%bb%e6%95%b0%e5%8f%8a%e5%85%b6%e8%ae%a1%e7%ae%97%e6%96%b9%e6%b3%95\/\",\"name\":\"8\\u79cd\\u4f20\\u70ed\\u7cfb\\u6570\\u53ca\\u5176\\u8ba1\\u7b97\\u65b9\\u6cd5\",\"isPartOf\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/zh-hans\/8%e7%a7%8d%e4%bc%a0%e7%83%ad%e7%b3%bb%e6%95%b0%e5%8f%8a%e5%85%b6%e8%ae%a1%e7%ae%97%e6%96%b9%e6%b3%95\/#primaryimage\"},\"datePublished\":\"2024-10-22T08:32:21+00:00\",\"dateModified\":\"2024-10-22T08:32:21+00:00\",\"author\":{\"@id\":\"https:\/\/www.thermal-engineering.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\"},\"description\":\"8\\u79cd\\u4f20\\u70ed\\u7cfb\\u6570\\u53ca\\u5176\\u8ba1\\u7b97\\u65b9\\u6cd5\\\"\\u4ecb\\u7ecd\\u4e86\\u516b\\u79cd\\u5e38\\u89c1\\u4f20\\u70ed\\u7cfb\\u6570\\u53ca\\u5176\\u8ba1\\u7b97\\u65b9\\u6cd5\\uff0c\\u6df1\\u5165\\u89e3\\u6790\\u5404\\u7c7b\\u4f20\\u70ed\\u73b0\\u8c61\\uff0c\\u5e2e\\u52a9\\u8bfb\\u8005\\u638c\\u63e1\\u70ed\\u80fd\\u4f20\\u9012\\u7684\\u57fa\\u672c\\u539f\\u7406\\u548c\\u516c\\u5f0f\\u3002\",\"inLanguage\":\"zh-CN\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.thermal-engineering.org\/zh-hans\/8%e7%a7%8d%e4%bc%a0%e7%83%ad%e7%b3%bb%e6%95%b0%e5%8f%8a%e5%85%b6%e8%ae%a1%e7%ae%97%e6%96%b9%e6%b3%95\/\"]}]},{\"@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\":\"zh-CN\",\"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\/zh-hans\/wp-json\/wp\/v2\/posts\/727962"}],"collection":[{"href":"https:\/\/www.thermal-engineering.org\/zh-hans\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.thermal-engineering.org\/zh-hans\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/zh-hans\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/zh-hans\/wp-json\/wp\/v2\/comments?post=727962"}],"version-history":[{"count":0,"href":"https:\/\/www.thermal-engineering.org\/zh-hans\/wp-json\/wp\/v2\/posts\/727962\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.thermal-engineering.org\/zh-hans\/wp-json\/wp\/v2\/media?parent=727962"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/zh-hans\/wp-json\/wp\/v2\/categories?post=727962"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thermal-engineering.org\/zh-hans\/wp-json\/wp\/v2\/tags?post=727962"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}