摘要
作为一种自然工质,R290单位容积制冷量大,价格低廉,臭氧消耗潜值为0,全球变暖潜值很小,并且其热力性能与常规制冷剂相比有明显优势。文章结合热力学第一和第二定律,对以R290为制冷剂的喷射/压缩制冷系统的能量转换过程进行分析,考察了典型空调工况下系统的不可逆损失分布,以及运行参数对系统的不可逆损失以及第二定律效率的影响。
As a natural refrigerant,R290 had advantages of large volume cooling capacity,low price,zero ODP,small GWP and a better thermal performance compared with conventional refrigerants. Based on the first and second laws of thermodynamics,the energy conversion process of an ejector- expansion refrigeration system was analyzed with R290 as working fluid. The irreversible loss distribution of the system was identified under typical air- conditioning conditions.Also,the effects of operation parameters on the total irreversible loss and second law efficiency of the system were investigated.
出处
《广州化工》
CAS
2015年第1期140-142,共3页
GuangZhou Chemical Industry
