Experimental Analysis of the Performances of Unit Refrigeration Systems Based on Parallel Compressors with Consideration of the Volumetric and Isentropic Efficiency

Daoming Shen; Chao Gui; Jinhong Xia; Songtao Xue

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Experimental Analysis of the Performances of Unit Refrigeration Systems Based on Parallel Compressors with Consideration of the Volumetric and Isentropic Efficiency

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The performances of a refrigeration unit relying on compressors working in parallel have been investigated considering the influence of the compressor volumetric efficiency and isentropic efficiency on the compression ratio.Moreover,the following influential factors have been taken into account:evaporation temperature,condensation temperature and compressor suction-exhaust pressure ratio for different opening conditions of the compressor.The following quantities have been selected as the unit performance measurement indicators:refrigeration capacity,energy efficiency ratio(COP),compressor power consumption,and refrigerant flow rate.The experimental results indicate that the system refrigeration capacity and COP decrease with a decrease in evaporation temperature,increase of condensation temperature,and increase in pressure ratio.The refrigerant flow rate increases with the increase in evaporation temperature,decrease in condensing temperature and increase in pressure ratio.The compressor power consumption increases with the increase in condensing temperature and increase in pressure ratio,but is not significantly affected by the evaporation temperature.

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《流体力学与材料加工（英文）》 |2020年第3期|489-500|共12页
作者
Daoming Shen; Chao Gui; Jinhong Xia; Songtao Xue;
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作者单位

College of Civil Engineering and Architecture;

Xinxiang University;

Xinxiang;

453000;

China;

Research Institute of Structural Engineering and Disaster Reduction;

Tongji University;

Shanghai;

20092;

China;

Department of Architecture;

Tohoku Institute of Technology;

Sendai;

982-8577;

Japan;

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原文格式 PDF
正文语种 chi
中图分类中等教育;
关键词
Parallel compressor unit; evaporation temperature; condensation temperature; pressure ratio; refrigeration capacity; energy efficiency ratio(COP);

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Experimental Analysis of the Performances of Unit Refrigeration Systems Based on Parallel Compressors with Consideration of the Volumetric and Isentropic Efficiency

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