空气制冷应用于空调系统的分析研究

随着CFCs 制冷工质替代技术的深入研究,由于空气作为制冷工质对环境的非污染的友好特性,所以以空气作为制冷工质的制冷系统的特性研究得到人们的青睐.从分析空气制冷循环的热力特性入手,对应用于空调系统的空气制冷循环进行了高压循环和真空循环性能理论计算与比较,讨论了开式循环和闭式循环的特点、空气制冷循环利用一次回风的特性以及在实际工程中的应用问题.

A study on performance of an air refrigerating cycle used for air-conditioning system

From the view of thermodynamic, the efficiency of an air refrigerating cycle that is working at atmosphere pressure state and vacuumed state respectively was analyzed. Furthermore, the performance of several styles of air-conditioning system with the air refrigerating cycle, such as the closed refrigerating cycle, the opened refrigerating cycle and the partial cooling air returning to room cycle were studied. The researching results show that the COP of the refrigerating system at atmosphere pressure state is more than that at vacuumed state, and the energy-saving could be obtained when the air-conditioning system with partial cooling air returning to room and the opened refrigerating cycle will run at vacuumed state. It is suggested that option of the opened refrigerating cycle or closed cycle should be carried out according to the requirements of an actual engineering project.