Numerical Study on Performance of Freezing/Refrigeration Showcase Using CO2
The performance characteristics of a Freezing/Refrigeration showcase have been analyzed according to outdoor temperature, outdoor air velocity, and 1st- and 2nd-stage EEV opening in order to increase the better understanding of the thermodynamic characteristics of the CO2 cycle. As a result, total cooling capacity was reduced by 10.9％ and total compressor work was increased by 19.5％, resulting in the 25.5％ drop cooling COP when outdoor temperature increased. Unlike low-pressure side, high-pressure side was found to be very sensitive to operating conditions. In addition, the cooling COP has maximum value when 1st- and 2nd-stage EEV opening is 15％ and 46％, respectively.
Showcase CO2 COP Electric expansion valve
Eunsung Shin Taggyun Ryu Yunchan Sin Honghyun Cho
Graduate School of Mechanical Engineering, Chosun Univ., Gwangju, Korea School of Mechanical Engineering, Chosun Univ., Gwangju, Korea Department of Mechanical Engineering, Chosun Univ., Gwangju, Korea
国际会议
The 7th International Conference on Fluid and Thermal Energy Conversion(第七届流动技术与热能转化国际会议 FTEC 2011)
郑州
英文
520-527
2011-09-24（万方平台首次上网日期，不代表论文的发表时间）