{"id":744098,"date":"2024-08-22T07:46:17","date_gmt":"2024-08-22T06:46:17","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=744098"},"modified":"2024-08-22T07:46:17","modified_gmt":"2024-08-22T06:46:17","slug":"%e9%ab%98%e6%b8%a9%e5%8f%8d%e5%ba%94%e5%a0%86%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\/%e9%ab%98%e6%b8%a9%e5%8f%8d%e5%ba%94%e5%a0%86%e4%b8%ad%e7%9a%84%e7%83%ad%e4%bc%a0%e9%80%92\/","title":{"rendered":"\u9ad8\u6e29\u53cd\u5e94\u5806\u4e2d\u7684\u70ed\u4f20\u9012"},"content":{"rendered":"

\u9ad8\u6e29\u53cd\u5e94\u5806\u4e2d\u7684\u70ed\u4f20\u9012\uff1a\u6df1\u5165\u6d45\u51fa\u5730\u89e3\u91ca\u70ed\u4f20\u9012\u7684\u57fa\u672c\u539f\u7406\u53ca\u5176\u5728\u9ad8\u6e29\u53cd\u5e94\u5806\u4e2d\u7684\u5e94\u7528\uff0c\u9002\u5408\u521d\u5b66\u8005\u7406\u89e3\u7684\u91cd\u8981\u6982\u5ff5\u3002<\/p>\n

\"\u9ad8\u6e29\u53cd\u5e94\u5806\u4e2d\u7684\u70ed\u4f20\u9012\"<\/p>\n

\u9ad8\u6e29\u53cd\u5e94\u5806\u4e2d\u7684\u70ed\u4f20\u9012<\/h2>\n

\u9ad8\u6e29\u53cd\u5e94\u5806\uff08High-Temperature Reactor, HTR\uff09\u662f\u5229\u7528\u9ad8\u6e29\u6c14\u4f53\u4f5c\u4e3a\u51b7\u5374\u5242\u7684\u4e00\u79cd\u6838\u53cd\u5e94\u5806\uff0c\u5176\u4e3b\u8981\u7528\u4e8e\u63d0\u9ad8\u7535\u80fd\u751f\u4ea7\u6548\u7387\u548c\u5176\u4ed6\u5de5\u4e1a\u5e94\u7528\u3002\u9ad8\u6e29\u53cd\u5e94\u5806\u7684\u8bbe\u8ba1\u9700\u8981\u9ad8\u5ea6\u5173\u6ce8\u70ed\u4f20\u9012\u8fc7\u7a0b\uff0c\u4ee5\u786e\u4fdd\u53cd\u5e94\u5806\u7684\u5b89\u5168\u548c\u9ad8\u6548\u8fd0\u884c\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u9ad8\u6e29\u53cd\u5e94\u5806\u4e2d\u7684\u51e0\u79cd\u4e3b\u8981\u70ed\u4f20\u9012\u673a\u5236\u3002<\/p>\n

\u70ed\u4f20\u5bfc<\/h2>\n

\u70ed\u4f20\u5bfc\u662f\u6307\u70ed\u91cf\u5728\u56fa\u4f53\u6750\u6599\u4e2d\u901a\u8fc7\u5206\u5b50\u6216\u539f\u5b50\u95f4\u7684\u4e92\u52a8\u4ece\u9ad8\u6e29\u533a\u4f20\u9012\u5230\u4f4e\u6e29\u533a\u7684\u8fc7\u7a0b\u3002\u9ad8\u6e29\u53cd\u5e94\u5806\u4e2d\u7684\u71c3\u6599\u68d2\u3001\u53cd\u5e94\u5806\u5806\u82af\u548c\u7ed3\u6784\u6750\u6599\u90fd\u662f\u70ed\u4f20\u5bfc\u7684\u4e3b\u8981\u9014\u5f84\u3002\u5085\u91cc\u53f6\u5b9a\u5f8b\uff08Fourier’s Law\uff09\u63cf\u8ff0\u4e86\u70ed\u4f20\u5bfc\u7684\u57fa\u672c\u89c4\u5f8b\uff1a<\/p>\n

\u5085\u91cc\u53f6\u5b9a\u5f8b\uff1a<\/u><\/p>\n

q = -k \\frac{dT}{dx}<\/p>\n

\u5176\u4e2d\uff0cq<\/u> \u662f\u70ed\u6d41\u5bc6\u5ea6\uff08W\/m2<\/sup>\uff09\uff0ck<\/u> \u662f\u5bfc\u70ed\u7cfb\u6570\uff08W\/m\u00b7K\uff09\uff0cdT\/dx<\/u> \u662f\u6e29\u5ea6\u68af\u5ea6\uff08K\/m\uff09\u3002<\/p>\n

\u5bf9\u6d41\u4f20\u70ed<\/h2>\n

\u5bf9\u6d41\u662f\u7531\u4e8e\u6d41\u4f53\uff08\u5982\u6c14\u4f53\u6216\u6db2\u4f53\uff09\u7684\u79fb\u52a8\u800c\u5f15\u8d77\u7684\u70ed\u4f20\u9012\u3002\u9ad8\u6e29\u53cd\u5e94\u5806\u901a\u5e38\u4f7f\u7528\u9ad8\u6e29\u6c14\u4f53\uff08\u5982\u6c26\u6c14\uff09\u4f5c\u4e3a\u51b7\u5374\u5242\uff0c\u901a\u8fc7\u6d41\u52a8\u7684\u6c14\u4f53\u5c06\u70ed\u91cf\u4ece\u5806\u82af\u4f20\u5bfc\u81f3\u70ed\u4ea4\u6362\u5668\u3002\u5bf9\u6d41\u4f20\u70ed\u53ef\u4ee5\u5206\u4e3a\u81ea\u7136\u5bf9\u6d41\u548c\u5f3a\u5236\u5bf9\u6d41\u4e24\u79cd\u3002\u52aa\u8c22\u5c14\u7279\u6570\uff08Nusselt number\uff09\u5e38\u7528\u4e8e\u63cf\u8ff0\u5bf9\u6d41\u4f20\u70ed\u7684\u6548\u7387\uff1a<\/p>\n

\u52aa\u8c22\u5c14\u7279\u6570\uff1a<\/u><\/p>\n

Nu = \\frac{hL}{k}<\/p>\n

\u5176\u4e2d\uff0cNu<\/u> \u662f\u52aa\u8c22\u5c14\u7279\u6570\uff0ch<\/u> \u662f\u5bf9\u6d41\u4f20\u70ed\u7cfb\u6570\uff08W\/m2<\/sup>\u00b7K\uff09\uff0cL<\/u> \u662f\u7279\u5f81\u957f\u5ea6\uff08m\uff09\uff0ck<\/u> \u662f\u6d41\u4f53\u7684\u5bfc\u70ed\u7cfb\u6570\uff08W\/m\u00b7K\uff09\u3002<\/p>\n

\u70ed\u8f90\u5c04<\/h2>\n

\u70ed\u8f90\u5c04\u662f\u901a\u8fc7\u7535\u78c1\u6ce2\u4f20\u9012\u70ed\u91cf\u7684\u8fc7\u7a0b\uff0c\u4e0d\u9700\u8981\u7269\u8d28\u4ecb\u8d28\u3002\u9ad8\u6e29\u53cd\u5e94\u5806\u4e2d\uff0c\u70ed\u8f90\u5c04\u4e3b\u8981\u5728\u9ad8\u6e29\u5806\u82af\u548c\u5176\u5468\u56f4\u7684\u7ed3\u6784\u6750\u6599\u4e4b\u95f4\u8fdb\u884c\u3002\u65af\u8482\u82ac-\u73bb\u5c14\u5179\u66fc\u5b9a\u5f8b\uff08Stefan-Boltzmann Law\uff09\u63cf\u8ff0\u4e86\u7269\u4f53\u8f90\u5c04\u70ed\u91cf\u7684\u57fa\u672c\u539f\u5219\uff1a<\/p>\n

\u65af\u8482\u82ac-\u73bb\u5c14\u5179\u66fc\u5b9a\u5f8b\uff1a<\/u><\/p>\n

P = \u03b5\u03c3A(T4<\/sup> – T0<\/sub>4<\/sup>)<\/p>\n

\u5176\u4e2d\uff0cP<\/u> \u662f\u8f90\u5c04\u529f\u7387\uff08W\uff09\uff0c\u03b5<\/u> \u662f\u7269\u4f53\u7684\u53d1\u5c04\u7387\uff0c\u03c3<\/u> \u662f\u65af\u8482\u82ac-\u73bb\u5c14\u5179\u66fc\u5e38\u6570\uff085.67\u00d710-8<\/sup> W\/m2<\/sup>\u00b7K4<\/sup>\uff09\uff0cA<\/u> \u662f\u8f90\u5c04\u8868\u9762\u79ef\uff08m2<\/sup>\uff09\uff0cT<\/u> \u548c T0<\/sub><\/u> \u5206\u522b\u662f\u7269\u4f53\u8868\u9762\u548c\u73af\u5883\u7684\u7edd\u5bf9\u6e29\u5ea6\uff08K\uff09\u3002<\/p>\n

\u7ed3\u8bba<\/h2>\n

\u9ad8\u6e29\u53cd\u5e94\u5806\u4e2d\u7684\u70ed\u4f20\u9012\u6d89\u53ca\u5230\u70ed\u4f20\u5bfc\u3001\u5bf9\u6d41\u548c\u70ed\u8f90\u5c04\u4e09\u79cd\u4e3b\u8981\u673a\u5236\u3002\u8fd9\u4e9b\u70ed\u4f20\u9012\u65b9\u5f0f\u7684\u7efc\u5408\u4f5c\u7528\u786e\u4fdd\u4e86\u53cd\u5e94\u5806\u7684\u70ed\u7ba1\u7406\u548c\u5b89\u5168\u8fd0\u884c\u3002\u7406\u89e3\u548c\u4f18\u5316\u8fd9\u4e9b\u4f20\u70ed\u8fc7\u7a0b\uff0c\u5bf9\u4e8e\u53cd\u5e94\u5806\u7684\u8bbe\u8ba1\u548c\u8fd0\u884c\u5177\u6709\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u9ad8\u6e29\u53cd\u5e94\u5806\u4e2d\u7684\u70ed\u4f20\u9012\uff1a\u6df1\u5165\u6d45\u51fa\u5730\u89e3\u91ca\u70ed\u4f20\u9012\u7684\u57fa\u672c\u539f\u7406\u53ca\u5176\u5728\u9ad8\u6e29\u53cd\u5e94\u5806\u4e2d\u7684\u5e94\u7528\uff0c\u9002\u5408\u521d\u5b66\u8005\u7406\u89e3\u7684\u91cd\u8981\u6982\u5ff5\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":"\n\u9ad8\u6e29\u53cd\u5e94\u5806\u4e2d\u7684\u70ed\u4f20\u9012<\/title>\n<meta name=\"description\" content=\"\u9ad8\u6e29\u53cd\u5e94\u5806\u4e2d\u7684\u70ed\u4f20\u9012\uff1a\u6df1\u5165\u6d45\u51fa\u5730\u89e3\u91ca\u70ed\u4f20\u9012\u7684\u57fa\u672c\u539f\u7406\u53ca\u5176\u5728\u9ad8\u6e29\u53cd\u5e94\u5806\u4e2d\u7684\u5e94\u7528\uff0c\u9002\u5408\u521d\u5b66\u8005\u7406\u89e3\u7684\u91cd\u8981\u6982\u5ff5\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, 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