大制冷量螺杆式压缩机性能测试方法分析

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英文篇名：Analysis on performance testing method for screw compressor with large cooling capacity 作者：朱峰 ; 柳建华 ; 刘效德 ; 路阳 ; 张维加 英文作者：Zhu Feng;Liu Jianhua;Liu Xiaode;Lu Yang;Zhang Weijia;University of Shanghai for Science and Technology;Ingersoll Rand Engineering & Technology Center-Asia Pacific; 关键词：螺杆式压缩机 ; 完全冷凝法 ; 倒三角法 ; 制冷量 ; 压降 英文关键词：screw compressor;;complete condensation method;;inverted triangulation method;;cooling capacity;;pressure drop 中文刊名：ZLDT 英文刊名：Refrigeration and Air-Conditioning 机构：上海理工大学;英格索兰亚太工程技术中心; 出版日期：2019-02-28 出版单位：制冷与空调 年：2019 期：v.19 语种：中文; 页：ZLDT201902009 页数：4 CN：02 ISSN：11-4519/TB 分类号：45-48

摘要

目前用于测试大制冷量螺杆式压缩机的测试装置压降均较大,很难实现吸排气小压差工况的性能测试,且测试台位建造成本较高。本文提出倒三角法以满足吸排气小压差工况的性能测试,并进行测试方法对比试验。结果表明,相比于完全冷凝法,倒三角法在循环回路上的流动压降减小约150 kPa,能够满足吸排气小压差测试要求;对于额定制冷工况的测试,2种方法的测试结果基本吻合,制冷量偏差在0.03%左右。
        At present,the pressure drops of test device used for screw compressor with large cooling capacity are all relatively large,which makes it difficult to conduct the performance test under the low differential pressure of suction and exhaust,and the construction cost of test bench is relatively high.The inverted triangulation method is proposed for the performance test under the low differential pressure of suction and exhaust,and the comparative tests for these test methods are conducted.The results show that the flow pressure drop of cycle circuit using the inverted triangulation method is decreased by 150 kPa compared with that of complete condensation method,which satisfies the test requirements of the low differential pressure of suction and exhaust.Under the rated refrigeration condition,the test results of these two methods are basically consistent with each other,and the deviation of cooling capacity is about 0.03%.

引文

[1]张宝怀,王晓,腾琴,等,大功率制冷压缩机性能测试新装置[J].流体机械,2003,31(增刊):232-234.
    [2]容积式制冷剂压缩机性能试验方法:GB/T5773-2016[S].
    [3]Methods of testing for rating positive displacement refrigerant compressors and condensing units:ANSI/ASHRAE Standard 23-2005[S].
    [4]螺杆式制冷压缩机:GB/T19410-2008[S].