燃气轮机排气流量测试方法选择

Two testing methods for exhaust gas flow of gas turbines

介绍了ASME PTC4.4《燃气轮机联合循环机组余热锅炉性能试验规程》2008版中,燃机排气流量的燃气轮机(燃机)热平衡法和余热锅炉热平衡法2种测试方法,并以某F级燃机联合循环机组性能试验结果为例,对其在测量参数、仪表使用、计算结果及不确定度分析等方面进行了比较。结果表明,对于不同系统的联合循环机组,应根据其设计参数预先分析各测量参数的敏感性,并基于该分析结果选择适用于该机组的测试方法及相应精度的测量仪表,以降低试验成本。

Two gas turbine exhaust gas flow testing methods in ASME PTC 4.4 2008 version were de-scribed in this paper,namely the gas turbine heat balance method and heat recovery steam generator （HRSG）heat balance method.Taking the performance test results of an F class combined cycle unit as the example,the above two methods were compared,from the aspect of measuring parameters,instruments, testing results and uncertainty analysis.The results show that,to reduce the experimental costs,a pretest sensitivity analysis for each design parameter is recommended when choosing the testing method and in-struments with relevant precisions and quantities,for combined cycle unit with different systems.