标准ASME PTC 4.3—1968和ASME PTC4.3—2017关于空气预热器性能计算区别  

Difference in air heaters performance calculation between ASME PTC 4.3—1968 and ASME PTC 4.3—2017

作　　者：王祝成[1] 梁昊 徐凯[1] 韩国庆[1] 陈宝康[1] 施延洲[1] WANG Zhucheng;LIANG Hao;XU Kai;HAN Guoqing;CHEN Baokang;SHI Yanzhou(Xi’an Thermal Power Research Institute Co.,Ltd.,Suzhou Branch,Suzhou 215153,China)

机构地区：[1]西安热工研究院有限公司苏州分公司,江苏苏州215153

出　　处：《热力发电》2019年第5期25-30,共6页Thermal Power Generation

摘　　要：本文针对实际工程常用的美国标准ASME PTC 4.3—1968和ASME PTC 4.3—2017中关于空气预热器性能计算方法的区别进行了分析,详细比较了空气预热器漏风率计算及修正、烟气阻力修正的差异。试验案例计算结果表明:2个标准计算的空气预热器漏风率结果相对偏差值为2.06%,得空气预热器漏风率修正值的相对值偏差为12.73%,烟气阻力修正值的相对值偏差为22.91%;如果将ASME PTC 4.3—1968标准修正公式中烟气量改成基于每小时计量,则2个标准计算的漏风率修正值的相对值偏差为2.62%,烟气阻力修正值的相对值偏差为1.28%。The differences of air heaters performance calculation method between ASME PTC 4.3 1968 and ASME PTC 4.3 2017 are discussed, and the difference in calculation and correction of percent air heater leakage, as well as correction of flue gas resistance, are compared in detail. The calculation results of the performance test case show that, the relative deviation of the percent air heater leakage calculated by the two standards is 2.06%, and the relative deviation of the percent air heater leakage corrected by the two standards is 12.73%, and the relative deviation of flue gas resistance corrected by the two standards is 22.91%. If the amount of flue gas in the correction formula is changed to be based on hourly in ASME PTC 4.3 1968, the relative deviation of the percent air heater leakage corrected by the two standards is 2.62%, and the relative deviation of flue gas resistance corrected by the two standards is 1.28%.

关 键 词：ASMEPTC4.3-1968 ASMEPTC4.3-2017 空气预热器 漏风率 烟气阻力 计算方法 修正 性能试验 

分 类 号：TK223.3[动力工程及工程热物理—动力机械及工程]