制冷学报2011，Vol.32Issue(1)：46-50,5.DOI:10.3969/j.issn.0253-4339.2011.01.046
蒸气压缩式制冷系统压力试验的研究与应用
Research and Applications of Pressure Test for Vapor Compression Refrigeration System
刘成毅 1罗西牧 2胡笳 3李玲1
作者信息
- 1. 四川建筑职业技术学院 德阳618000
- 2. 四川化工建筑总公司 广汉618300
- 3. 成都工业设备安装公司 成都610071
- 折叠
摘要
Abstract
The observation of leak detection on site for vapor compression refrigeration system showed that foamy leaks might be found by foamy test, even when maintaining pressure test met the requirement of national standard GB50274-98 "code for construction and acceptance of refrigeration and air separation equipment installation engineering". To address this issue, different effects of foam and maintaining pressure test, as well as leakage rate criterion for maintaining pressure test in GB50274-98 were studied. It is shown that the relative leakage rate criterion in GB50274-98, I.e, pressure drop should not exceed 1% of tested pressure, was not rigorous enough for global leakage limitation and failed to have a valid control over the large leaks in the large tested systems. Further investigation pointed out that maintaining pressure test can directly evaluate global leakage rate and non-accident leakage of refrigerants. To obtain more accurate data in the test, accuracy of manometers used on site should be improved and maintaining pressure period should be extended. This study provides a useful strategy for improving quality of on-site leak detection and optimizing methods of evaluation for refrigeration system.关键词
热工学/制冷系统/压力试验/泄漏评价Key words
Pyrology/ Refrigeration system/ Pressure test/ Leakage evaluation分类
通用工业技术引用本文复制引用
刘成毅,罗西牧,胡笳,李玲..蒸气压缩式制冷系统压力试验的研究与应用[J].制冷学报,2011,32(1):46-50,5.
