{"id":744136,"date":"2024-10-28T09:26:05","date_gmt":"2024-10-28T08:26:05","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=744136"},"modified":"2024-10-28T09:26:05","modified_gmt":"2024-10-28T08:26:05","slug":"%e5%a4%9a%e5%ad%94%e7%94%b5%e6%9e%81%e4%b8%ad%e7%9a%84%e7%83%ad%e4%bc%a0%e9%80%92","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/zh-hans\/%e5%a4%9a%e5%ad%94%e7%94%b5%e6%9e%81%e4%b8%ad%e7%9a%84%e7%83%ad%e4%bc%a0%e9%80%92\/","title":{"rendered":"\u591a\u5b54\u7535\u6781\u4e2d\u7684\u70ed\u4f20\u9012"},"content":{"rendered":"<p class=\"sidekick\">\u591a\u5b54\u7535\u6781\u4e2d\u7684\u70ed\u4f20\u9012\uff1a\u89e3\u91ca\u70ed\u4f20\u9012\u5728\u591a\u5b54\u7535\u6781\u4e2d\u7684\u57fa\u672c\u539f\u7406\uff0c\u5206\u6790\u5176\u5728\u7535\u6c60\u548c\u80fd\u6e90\u8bbe\u5907\u4e2d\u7684\u5e94\u7528\u53ca\u4f18\u52bf\uff0c\u5b9e\u73b0\u9ad8\u6548\u80fd\u91cf\u7ba1\u7406\u3002<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/\u591a\u5b54\u7535\u6781\u4e2d\u7684\u70ed\u4f20\u9012.png\" alt=\"\u591a\u5b54\u7535\u6781\u4e2d\u7684\u70ed\u4f20\u9012\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>\u591a\u5b54\u7535\u6781\u4e2d\u7684\u70ed\u4f20\u9012<\/h2>\n<p>\u5728\u73b0\u4ee3\u7535\u5316\u5b66\u8bbe\u5907\u4e2d\uff0c\u5982\u71c3\u6599\u7535\u6c60\u3001\u9502\u79bb\u5b50\u7535\u6c60\u548c\u8d85\u7ea7\u7535\u5bb9\u5668\uff0c\u591a\u5b54\u7535\u6781\u56e0\u5176\u9ad8\u6bd4\u8868\u9762\u79ef\u548c\u4f18\u5f02\u7684\u4f20\u8d28\u7279\u6027\u800c\u53d7\u5230\u5e7f\u6cdb\u5173\u6ce8\u3002\u672c\u7bc7\u6587\u7ae0\u5c06\u63a2\u8ba8\u591a\u5b54\u7535\u6781\u4e2d\u7684\u70ed\u4f20\u9012\u673a\u5236\uff0c\u4ee5\u53ca\u5f71\u54cd\u8fd9\u4e00\u8fc7\u7a0b\u7684\u5173\u952e\u56e0\u7d20\u3002<\/p>\n<h2>\u70ed\u4f20\u9012\u673a\u5236<\/h2>\n<p>\u591a\u5b54\u7535\u6781\u4e2d\u7684\u70ed\u4f20\u9012\u4e3b\u8981\u901a\u8fc7\u4ee5\u4e0b\u4e09\u79cd\u673a\u5236\u8fdb\u884c\uff1a<\/p>\n<p><u1><\/p>\n<li>\u5bfc\u70ed<\/li>\n<li>\u5bf9\u6d41<\/li>\n<li>\u70ed\u8f90\u5c04<\/li>\n<p><\/u1><\/p>\n<h3>1. \u5bfc\u70ed<\/h3>\n<p>\u5bfc\u70ed\u662f\u591a\u5b54\u7535\u6781\u4e2d\u6700\u4e3b\u8981\u7684\u70ed\u4f20\u9012\u65b9\u5f0f\u3002\u5bfc\u70ed\u53ef\u4ee5\u7528\u5085\u91cc\u53f6\u5b9a\u5f8b(Fourier&#8217;s Law)\u8fdb\u884c\u63cf\u8ff0\uff1a<\/p>\n<p><i>q<sub>cond<\/sub> = -k * \\frac{dT}{dx}<\/i><\/p>\n<p>\u5176\u4e2d\uff1a<\/p>\n<p><u1><\/p>\n<li><i>q<sub>cond<\/sub><\/i> \u4e3a\u5bfc\u70ed\u901a\u91cf<\/li>\n<li><i>k<\/i> \u4e3a\u70ed\u5bfc\u7387<\/li>\n<li><i>\\frac{dT}{dx}<\/i> \u4e3a\u6e29\u5ea6\u68af\u5ea6<\/li>\n<p><\/u1><\/p>\n<p>\u591a\u5b54\u7535\u6781\u7684\u5bfc\u70ed\u7387\u53d6\u51b3\u4e8e\u7535\u6781\u6750\u6599\u53ca\u5176\u5b54\u9699\u7387\u3002\u56e0\u4e3a\u591a\u5b54\u7535\u6781\u542b\u6709\u5927\u91cf\u6c14\u4f53\u6216\u6db2\u4f53\u586b\u5145\u7684\u5b54\u9699\uff0c\u6574\u4f53\u5bfc\u70ed\u7387\u901a\u5e38\u4f4e\u4e8e\u81f4\u5bc6\u6750\u6599\u3002<\/p>\n<h3>2. \u5bf9\u6d41<\/h3>\n<p>\u5728\u591a\u5b54\u7535\u6781\u4e2d\uff0c\u7279\u522b\u662f\u5728\u5145\u6ee1\u6d41\u52a8\u7535\u89e3\u6db2\u7684\u7535\u6781\u7ed3\u6784\u4e2d\uff0c\u5bf9\u6d41\u4e5f\u662f\u4e00\u4e2a\u91cd\u8981\u7684\u70ed\u4f20\u9012\u673a\u5236\u3002\u5bf9\u6d41\u4f20\u70ed\u53ef\u7528\u4ee5\u4e0b\u516c\u5f0f\u63cf\u8ff0\uff1a<\/p>\n<p><i>q<sub>conv<\/sub> = h * A * (T_s &#8211; T_f)<\/i><\/p>\n<p>\u5176\u4e2d\uff1a<\/p>\n<p><u1><\/p>\n<li><i>q<sub>conv<\/sub><\/i> \u4e3a\u5bf9\u6d41\u4f20\u70ed\u901a\u91cf<\/li>\n<li><i>h<\/i> \u4e3a\u5bf9\u6d41\u6362\u70ed\u7cfb\u6570<\/li>\n<li><i>A<\/i> \u4e3a\u4f20\u70ed\u9762\u79ef<\/li>\n<li><i>T_s<\/i> \u4e3a\u8868\u9762\u6e29\u5ea6<\/li>\n<li><i>T_f<\/i> \u4e3a\u6d41\u4f53\u6e29\u5ea6<\/li>\n<p><\/u1><\/p>\n<p>\u7531\u4e8e\u7535\u89e3\u6db2\u5728\u591a\u5b54\u7535\u6781\u4e2d\u7684\u5faa\u73af\u8fd0\u52a8\uff0c\u5bf9\u6d41\u80fd\u6709\u6548\u5730\u5e26\u8d70\u90e8\u5206\u70ed\u91cf\uff0c\u51cf\u8f7b\u5c40\u90e8\u8fc7\u70ed\u73b0\u8c61\u3002<\/p>\n<h3>3. \u70ed\u8f90\u5c04<\/h3>\n<p>\u70ed\u8f90\u5c04\u5728\u591a\u5b54\u7535\u6781\u4e2d\u7684\u4f5c\u7528\u901a\u5e38\u8f83\u5c0f\uff0c\u4f46\u5728\u7279\u5b9a\u6761\u4ef6\u4e0b\uff0c\u5982\u9ad8\u6e29\u73af\u5883\u4e2d\uff0c\u70ed\u8f90\u5c04\u7684\u8d21\u732e\u4e0d\u5bb9\u5ffd\u89c6\u3002\u70ed\u8f90\u5c04\u4f20\u70ed\u53ef\u7528\u65af\u7279\u85e9-\u73bb\u5c14\u5179\u66fc\u5b9a\u5f8b(Stefan-Boltzmann Law)\u63cf\u8ff0\uff1a<\/p>\n<p><i>q<sub>rad<\/sub> = \\sigma * \\epsilon * A * (T^4)<\/i><\/p>\n<p>\u5176\u4e2d\uff1a<\/p>\n<p><u1><\/p>\n<li><i>q<sub>rad<\/sub><\/i> \u4e3a\u8f90\u5c04\u70ed\u901a\u91cf<\/li>\n<li><i>\\sigma<\/i> \u4e3a\u65af\u7279\u85e9-\u73bb\u5c14\u5179\u66fc\u5e38\u6570<\/li>\n<li><i>\\epsilon<\/i> \u4e3a\u6750\u6599\u7684\u53d1\u5c04\u7387<\/li>\n<li><i>A<\/i> \u4e3a\u8f90\u5c04\u9762\u79ef<\/li>\n<li><i>T<\/i> \u4e3a\u7edd\u5bf9\u6e29\u5ea6<\/li>\n<p><\/u1><\/p>\n<h2>\u5f71\u54cd\u56e0\u7d20<\/h2>\n<p>\u5f71\u54cd\u591a\u5b54\u7535\u6781\u4e2d\u70ed\u4f20\u9012\u7684\u5173\u952e\u56e0\u7d20\u5305\u62ec\u6750\u6599\u7684\u70ed\u5bfc\u7387\u3001\u5b54\u9699\u7387\u3001\u5b54\u5f84\u5206\u5e03\u3001\u6d41\u4f53\u6027\u8d28\u548c\u6d41\u901f\u7b49\u3002\u5408\u7406\u9009\u62e9\u548c\u4f18\u5316\u8fd9\u4e9b\u53c2\u6570\uff0c\u53ef\u4ee5\u663e\u8457\u63d0\u5347\u591a\u5b54\u7535\u6781\u7684\u70ed\u7ba1\u7406\u6027\u80fd\u3002<\/p>\n<h2>\u5e94\u7528\u5b9e\u4f8b<\/h2>\n<p>\u5728\u71c3\u6599\u7535\u6c60\u4e2d\uff0c\u591a\u5b54\u7535\u6781\u6750\u6599\u5982\u78b3\u7eb8\u6216\u91d1\u5c5e\u6ce1\u6cab\u88ab\u5e7f\u6cdb\u5e94\u7528\u3002\u5b83\u4eec\u63d0\u4f9b\u4e86\u826f\u597d\u7684\u6c14\u4f53\u6269\u6563\u8def\u5f84\u548c\u4f20\u70ed\u901a\u9053\uff0c\u6709\u52a9\u4e8e\u63d0\u9ad8\u7535\u6c60\u7684\u6574\u4f53\u6027\u80fd\u548c\u8010\u4e45\u6027\u3002<\/p>\n<p>\u5728\u9502\u79bb\u5b50\u7535\u6c60\u4e2d\uff0c\u9ad8\u5bfc\u70ed\u6027\u7684\u591a\u5b54\u9694\u819c\u6709\u52a9\u4e8e\u5747\u8861\u7535\u6c60\u5185\u90e8\u6e29\u5ea6\u573a\uff0c\u907f\u514d\u5c40\u90e8\u8fc7\u70ed\u73b0\u8c61\uff0c\u5ef6\u957f\u7535\u6c60\u5bff\u547d\u3002<\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u591a\u5b54\u7535\u6781\u4e2d\u7684\u70ed\u4f20\u9012\u8fc7\u7a0b\u590d\u6742\u4e14\u591a\u6837\uff0c\u5f71\u54cd\u56e0\u7d20\u4f17\u591a\uff0c\u4f46\u901a\u8fc7\u5408\u7406\u7684\u8bbe\u8ba1\u4e0e\u4f18\u5316\uff0c\u53ef\u4ee5\u6709\u6548\u63d0\u5347\u5176\u6027\u80fd\u3002\u4e86\u89e3\u5e76\u638c\u63e1\u8fd9\u4e9b\u70ed\u4f20\u9012\u673a\u5236\uff0c\u5bf9\u4e8e\u63a8\u52a8\u76f8\u5173\u6280\u672f\u7684\u53d1\u5c55\u5177\u6709\u91cd\u8981\u610f\u4e49\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u591a\u5b54\u7535\u6781\u4e2d\u7684\u70ed\u4f20\u9012\uff1a\u89e3\u91ca\u70ed\u4f20\u9012\u5728\u591a\u5b54\u7535\u6781\u4e2d\u7684\u57fa\u672c\u539f\u7406\uff0c\u5206\u6790\u5176\u5728\u7535\u6c60\u548c\u80fd\u6e90\u8bbe\u5907\u4e2d\u7684\u5e94\u7528\u53ca\u4f18\u52bf\uff0c\u5b9e\u73b0\u9ad8\u6548\u80fd\u91cf\u7ba1\u7406\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":"<!-- 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