{"id":741662,"date":"2024-11-16T10:24:46","date_gmt":"2024-11-16T09:24:46","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=741662"},"modified":"2024-11-16T10:24:46","modified_gmt":"2024-11-16T09:24:46","slug":"%e6%8d%a2%e7%83%ad%e5%99%a8%e7%9a%84%e7%83%ad%e5%8a%9b%e5%ad%a6%e6%80%a7%e8%83%bd%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/zh-hans\/%e6%8d%a2%e7%83%ad%e5%99%a8%e7%9a%84%e7%83%ad%e5%8a%9b%e5%ad%a6%e6%80%a7%e8%83%bd%e5%88%86%e6%9e%90\/","title":{"rendered":"\u6362\u70ed\u5668\u7684\u70ed\u529b\u5b66\u6027\u80fd\u5206\u6790"},"content":{"rendered":"<p class=\"sidekick\">\u6362\u70ed\u5668\u7684\u70ed\u529b\u5b66\u6027\u80fd\u5206\u6790\uff1a\u4e86\u89e3\u6362\u70ed\u5668\u662f\u5982\u4f55\u901a\u8fc7\u4f20\u70ed\u5b9e\u73b0\u80fd\u6e90\u9ad8\u6548\u5229\u7528\u7684\uff0c\u6df1\u5165\u63a2\u8ba8\u5176\u64cd\u4f5c\u539f\u7406\u4e0e\u6027\u80fd\u4f18\u5316\u65b9\u6cd5\u3002<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/\u6362\u70ed\u5668\u7684\u70ed\u529b\u5b66\u6027\u80fd\u5206\u6790.png\" alt=\"\u6362\u70ed\u5668\u7684\u70ed\u529b\u5b66\u6027\u80fd\u5206\u6790\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>\u6362\u70ed\u5668\u7684\u70ed\u529b\u5b66\u6027\u80fd\u5206\u6790<\/h2>\n<p>\u6362\u70ed\u5668\u662f\u70ed\u529b\u5de5\u7a0b\u4e2d\u5e7f\u6cdb\u5e94\u7528\u7684\u8bbe\u5907\uff0c\u5b83\u7684\u529f\u80fd\u662f\u5b9e\u73b0\u4e24\u79cd\u6216\u591a\u79cd\u6d41\u4f53\u4e4b\u95f4\u7684\u70ed\u91cf\u4ea4\u6362\u3002\u4e86\u89e3\u6362\u70ed\u5668\u7684\u70ed\u529b\u5b66\u6027\u80fd\u5bf9\u4e8e\u4f18\u5316\u5176\u8bbe\u8ba1\u548c\u63d0\u9ad8\u6548\u7387\u975e\u5e38\u91cd\u8981\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u6362\u70ed\u5668\u7684\u57fa\u672c\u7c7b\u578b\u3001\u5de5\u4f5c\u539f\u7406\u4ee5\u53ca\u5176\u70ed\u529b\u5b66\u6027\u80fd\u5206\u6790\u7684\u65b9\u6cd5\u3002<\/p>\n<h2>\u6362\u70ed\u5668\u7684\u57fa\u672c\u7c7b\u578b<\/h2>\n<p>\u6839\u636e\u4f20\u70ed\u65b9\u5f0f\u7684\u4e0d\u540c\uff0c\u6362\u70ed\u5668\u4e3b\u8981\u5206\u4e3a\u4e09\u79cd\u7c7b\u578b\uff1a<\/p>\n<ul>\n<li>\u7ba1\u58f3\u5f0f\u6362\u70ed\u5668<\/li>\n<li>\u677f\u5f0f\u6362\u70ed\u5668<\/li>\n<li>\u7a7a\u6c14\u51b7\u5374\u5668<\/li>\n<\/ul>\n<p>\u6bcf\u79cd\u7c7b\u578b\u7684\u6362\u70ed\u5668\u90fd\u6709\u5176\u7279\u5b9a\u7684\u5e94\u7528\u573a\u666f\u548c\u4f18\u7f3a\u70b9\u3002\u7ba1\u58f3\u5f0f\u6362\u70ed\u5668\u9002\u7528\u4e8e\u9ad8\u6e29\u9ad8\u538b\u6761\u4ef6\u4e0b\u7684\u5e94\u7528\uff0c\u800c\u677f\u5f0f\u6362\u70ed\u5668\u5219\u56e0\u5176\u9ad8\u6548\u6362\u70ed\u80fd\u529b\u5e7f\u6cdb\u5e94\u7528\u4e8e\u4f4e\u6e29\u548c\u4e2d\u6e29\u6761\u4ef6\u4e0b\u3002<\/p>\n<h2>\u6362\u70ed\u5668\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>\u6362\u70ed\u5668\u7684\u57fa\u672c\u5de5\u4f5c\u539f\u7406\u662f\u901a\u8fc7\u4f20\u5bfc\u548c\u5bf9\u6d41\u4e24\u79cd\u4f20\u70ed\u673a\u5236\u5b9e\u73b0\u70ed\u91cf\u4ece\u4e00\u4e2a\u6d41\u4f53\u4f20\u9012\u5230\u53e6\u4e00\u4e2a\u6d41\u4f53\u3002\u5176\u4e2d\uff0c\u4f20\u5bfc\u662f\u901a\u8fc7\u56fa\u4f53\u6750\u6599\uff08\u5982\u6362\u70ed\u5668\u58c1\uff09\u8fdb\u884c\u7684\uff0c\u800c\u5bf9\u6d41\u5219\u662f\u5728\u6d41\u4f53\u5185\u90e8\u548c\u6d41\u4f53\u4e0e\u56fa\u4f53\u8868\u9762\u4e4b\u95f4\u8fdb\u884c\u7684\u3002<\/p>\n<h2>\u70ed\u529b\u5b66\u6027\u80fd\u5206\u6790<\/h2>\n<h3>\u4f20\u70ed\u6548\u7387<\/h3>\n<p>\u4f20\u70ed\u6548\u7387\u662f\u8861\u91cf\u6362\u70ed\u5668\u6027\u80fd\u7684\u4e00\u4e2a\u91cd\u8981\u6307\u6807\uff0c\u4e3b\u8981\u7531\u5bf9\u6570\u5e73\u5747\u6e29\u5dee\uff08LMTD\uff09\u548c\u70ed\u4f20\u5bfc\u7cfb\u6570\uff08U\uff09\u51b3\u5b9a\u3002LMTD\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u516c\u5f0f\u8ba1\u7b97\uff1a<\/p>\n<p>LMTD = <\/p>\n<div class=\"formula\">\\frac{\\Delta T_1 &#8211; \\Delta T_2}{\\ln(\\frac{\\Delta T_1}{\\Delta T_2})}<\/div>\n<\/p>\n<p>\u5176\u4e2d\uff0c<span>&Delta;T<sub>1<\/sub><\/span>\u548c<span>&Delta;T<sub>2<\/sub><\/span>\u5206\u522b\u662f\u6362\u70ed\u5668\u8fdb\u51fa\u53e3\u7aef\u7684\u6e29\u5ea6\u5dee\u3002<\/p>\n<h3>NTU\u65b9\u6cd5<\/h3>\n<p>NTU\uff08Number of Transfer Units\uff09\u65b9\u6cd5\u662f\u53e6\u4e00\u79cd\u5e38\u7528\u7684\u6362\u70ed\u5668\u5206\u6790\u65b9\u6cd5\u3002\u5b83\u4e0d\u9700\u8981\u51c6\u786e\u7684\u6e29\u5ea6\u5dee\uff0c\u53ea\u9700\u77e5\u9053\u6362\u70ed\u5668\u7684\u51e0\u4f55\u5c3a\u5bf8\u548c\u4f20\u70ed\u7cfb\u6570\u5373\u53ef\u3002NTU\u65b9\u6cd5\u7684\u57fa\u672c\u516c\u5f0f\u4e3a\uff1a<\/p>\n<p>Q = C_min * (T_h,in &#8211; T_c,in) * (1 &#8211; e<sup>-NTU(1 &#8211; C<sub>r<\/sub>)<\/sup><\/p>\n<p>\u5176\u4e2d\uff0cQ\u4e3a\u4f20\u70ed\u91cf\uff0cC<sub>min<\/sub>\u4e3a\u6700\u4f4e\u70ed\u5bb9\u7387\uff0cT<sub>h,in<\/sub>\u548cT<sub>c,in<\/sub>\u5206\u522b\u4e3a\u70ed\u6d41\u4f53\u548c\u51b7\u6d41\u4f53\u7684\u5165\u53e3\u6e29\u5ea6\uff0cNTU\u4e3a\u4f20\u70ed\u5355\u5143\u6570\uff0cC<sub>r<\/sub>\u4e3a\u70ed\u5bb9\u7387\u6bd4\u3002<\/p>\n<h3>\u538b\u529b\u635f\u5931<\/h3>\n<p>\u5728\u5206\u6790\u6362\u70ed\u5668\u7684\u70ed\u529b\u5b66\u6027\u80fd\u65f6\uff0c\u8fd8\u9700\u8003\u8651\u538b\u529b\u635f\u5931\u3002\u538b\u529b\u635f\u5931\u4e3b\u8981\u53d1\u751f\u5728\u6d41\u4f53\u6d41\u7ecf\u6362\u70ed\u5668\u5185\u90e8\u7684\u8fc7\u7a0b\uff0c\u5bfc\u81f4\u6362\u70ed\u6548\u7387\u4e0b\u964d\u3002\u538b\u529b\u635f\u5931\u53ef\u901a\u8fc7\u4ee5\u4e0b\u516c\u5f0f\u8ba1\u7b97\uff1a<\/p>\n<p>\\(\\Delta P = f * (L \/ D_h) * (\\rho * u^2 \/ 2)\\)<\/p>\n<p>\u5176\u4e2d\uff0c<span>&Delta;P<\/span>\u4e3a\u538b\u529b\u635f\u5931\uff0c<span>f<\/span>\u4e3a\u6469\u64e6\u56e0\u5b50\uff0c<span>L<\/span>\u4e3a\u6d41\u4f53\u6d41\u52a8\u8ddd\u79bb\uff0c<span>D<sub>h<\/sub><\/span>\u4e3a\u6db2\u538b\u76f4\u5f84\uff0c<span>&rho;<\/span>\u4e3a\u6d41\u4f53\u5bc6\u5ea6\uff0c<span>u<\/span>\u4e3a\u6d41\u901f\u3002<\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u6362\u70ed\u5668\u7684\u70ed\u529b\u5b66\u6027\u80fd\u5206\u6790\u5bf9\u4e8e\u63d0\u9ad8\u5176\u5de5\u4f5c\u6548\u7387\u548c\u4f18\u5316\u8bbe\u8ba1\u975e\u5e38\u5173\u952e\u3002\u901a\u8fc7\u5bf9\u4f20\u70ed\u6548\u7387\u3001NTU\u65b9\u6cd5\u548c\u538b\u529b\u635f\u5931\u7684\u8be6\u7ec6\u5206\u6790\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u7406\u89e3\u548c\u6539\u8fdb\u6362\u70ed\u5668\u7684\u5de5\u4f5c\u6027\u80fd\u3002\u5e0c\u671b\u672c\u6587\u80fd\u4e3a\u5bf9\u6362\u70ed\u5668\u611f\u5174\u8da3\u7684\u8bfb\u8005\u63d0\u4f9b\u4e00\u4e9b\u57fa\u7840\u77e5\u8bc6\uff0c\u5f15\u53d1\u66f4\u6df1\u5165\u7684\u63a2\u7d22\u548c\u7814\u7a76\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6362\u70ed\u5668\u7684\u70ed\u529b\u5b66\u6027\u80fd\u5206\u6790\uff1a\u4e86\u89e3\u6362\u70ed\u5668\u662f\u5982\u4f55\u901a\u8fc7\u4f20\u70ed\u5b9e\u73b0\u80fd\u6e90\u9ad8\u6548\u5229\u7528\u7684\uff0c\u6df1\u5165\u63a2\u8ba8\u5176\u64cd\u4f5c\u539f\u7406\u4e0e\u6027\u80fd\u4f18\u5316\u65b9\u6cd5\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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