制冷2016，Vol.37Issue(3)：28-34,7.DOI:10.3696/J.ISSN.1005-9180.2016.03.005
高压气体涡流膨胀的CO2低温制冷循环分析
Analysis on CO2 Refrigeration Cycle with High Pressure Gas Vortex Expansion for Low Temperature
赵家华 1宁静红2
作者信息
- 1. 天津职业大学 电子信息工程学院，天津300402
- 2. 天津商业大学 天津市制冷技术重点实验室，天津300134
- 折叠
摘要
Abstract
The CO2 refrigeration cycle with high pressure gas vortex expansion for low temperature is designed. The thermal performances of this CO2 refrigeration cycle with high pressure gas vortex expansion for low temperature are analyzed and compared with that of the CO2 low temperature refrigeration cycle of two-stage throttle and complete cooling in middle. The following conclusions are obtained. The CO2 refrigeration cycle with high pressure gas vortex expansion for low temperature has the maximum coefficient of performance ( COP) at the optimal high pressure. The coefficient of performances of the CO2 refrigeration cycle with high pressure gas vortex expansion for low temperature can be improved by increasing the evaporation temperature, the middle pressure and the mass ratio of cold gas, by reducing the mass ratio of cold gas into evaporator, as well as by decreasing the temperature of gas-cooler out-let. At the mass ratio of cold gas is 0. 6 and the mass ratio of cold gas into evaporator is 0. 2, the maximum coeffi-cient of performance of the CO2 refrigeration cycle with high pressure gas vortex expansion for low temperature com-pared with the CO2 low temperature refrigeration cycle of two-stage throttle and complete cooling in middle increa-ses of 36. 2%. With the increasing of the temperature of gas-cooler outlet, the reducing of the COP of the CO2 re-frigeration cycle with high pressure gas vortex expansion for low temperature is less than that of the CO2 low tempera-ture refrigeration cycle of two-stage throttle and complete cooling in middle.关键词
高压气体/涡流膨胀/CO2/低温制冷循环Key words
High pressure gas/Vortex expansion/CO2/Low temperature refrigeration cycle分类
化学化工引用本文复制引用
赵家华,宁静红..高压气体涡流膨胀的CO2低温制冷循环分析[J].制冷,2016,37(3):28-34,7.
