摘要
Two-stage vapor compression refrigeration cycle was accomplished with an intercooler.The state of the refrigerant vapor leaving the intercooler affects the system performance.The thermodynamic analysis of the trans-critical two-stage refrigeration cycle using CO2 as the refrigerant was made with a condensing temperature of 35℃.When the intercooler operated at about the geometric mean of the evaporating and condensing pressures,compared with the single stage cycle,the coefficient of performance(COP)of the two-stage cycle was improved.As the degree of superheating of the CO2 vapor leaving the intercooler increased,the COP of the two-stage system decreased.
Two-stage vapor compression refrigeration cycle was accomplished with an intercooler. The state of the refrigerant vapor leaving the intercooler affects the system performance. The thermodynamic analysis of the trans-critical two-stage refrigeration cycle using COz as the refrigerant was made with a condensing temperature of 35~C. When the intercooler operated at about the geometric mean of the evaporating and condensing pressures, compared with the single stage cycle, the coefficient of performance （COP） of the two-stage cycle was improved. As the degree of superheating of the CO2 vapor leaving the intercooler increased, the COP of the two-stage system decreased.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2008年第12期2985-2989,共5页
CIESC Journal
关键词
跨临界双级制冷循环
CO2
中间冷却
热力学分析
性能系数
trans-critical two-stage refrigeration cycle
CO2
intercooler
thermodynamic analysis coefficient of performance
