流体机械2023，Vol.51Issue(12)：16-22,35,8.DOI:10.3969/j.issn.1005-0329.2023.12.003
人工冰场用跨临界CO2并联压缩制冷试验研究
Experimental research on performance of transcritical CO2 parallel compression refrigeration system applied to artificial ice rink
摘要
Abstract
In order to explore the performance of transcritical CO2 parallel compression refrigeration applied to artificial ice rink,a transcritical CO2 parallel compression refrigeration system was established.Effects of evaporation temperature and compressor frequency on COP,cooling capacity,compressor power consumption,refrigerant flow rate and compression ratio were analyzed when single compressor runs independently and two compressors runs in parallel.The results indicate that COP,cooling capacity,compressor power consumption and refrigerant flow increase with the increase of evaporation temperature,and the compression ratio decreases.When the evaporation temperature is-9.4℃,COP reaches the maximum value of 2.00 for this test.In the range of 40～60 Hz test condition,with the increase of compressor frequency,the cooling capacity,compressor power consumption,refrigerant flow rate and compression ratio all increase.When a single compressor runs independently or the parallel compressors run at the same time,the COP reaches the maximum value at 50 Hz.At the same time,COP decreases with the increase of compressor operating frequency difference,and the COP difference can reach max.26.67%.A prediction model for the system was established to predict COP by evaporation temperature and discharge pressure.The predicted results were compared with the test results of the parallel compressors.The average error between the results predicted by the built model and the COP measured in the parallel compressor system test at the same frequency is 3.7%.The research results provide reference and guidance for the design of parallel compression refrigeration system.关键词
并联压缩/CO2/人工冰场/预测模型Key words
parallel compression/CO2/artificial ice rink/prediction model分类
机械制造引用本文复制引用
吴小华,魏闻天,宋衍昌,李晓琼,张振涛,郑康辉,杨俊玲..人工冰场用跨临界CO2并联压缩制冷试验研究[J].流体机械,2023,51(12):16-22,35,8.基金项目
国家自然科学基金项目(52206032) （52206032）
中央引导地方科技发展专项资金项目(ZYYD2022B11,2022ZY0048) （ZYYD2022B11,2022ZY0048）
中国科学院稳定支持基础研究领域青年团队计划项目(YSBR-043) （YSBR-043）
