摘要
低温绝热管道漏热量测量的热流计法就是采用热流计直接测试低温绝热管道表面的热流进而计算出管道漏热量的测量方法。采用热流计法可以实现管道漏热量的免工质更换、免拆装的在线测试,同时测试精度也可保证。另外,还建立了低温绝热管道在线漏热量测试结果的合于使用评价方法,其中对评价中的重要参数—管道夹层当量热导率进行了详细分析。
The heat flow meter method is used to measure the heat leakage of the cryogenic heat-insulation pipeline by directly measuring the heat flow on the surface of pipeline and then calculating the heat leakage with the testing heat flow. The heat flow meter method can realize the on-line testing of heat leakage without replacement of working fluid and disassembly of pipe from the pipeline, moreover, the accuracy of this method can be guaranteed. In addition, the fitness-for-service evaluation method to the on-line testing result of heat leakage of the cryogenic heat-insulation pipeline is built, in which the important parameter ---equivalent thermal conductivity is researched in detail.
出处
《制冷与空调（四川）》
2017年第4期351-354,共4页
Refrigeration and Air Conditioning
基金
国家质检总局科技计划项目(2015QK164)
关键词
低温绝热管道
漏热量
热流计测量法
在线测量
当量热导率
cryogenic heat-insulation pipeline
heat leakage
heat flow meter method
on-line testing
equivalent thermal conductivity
