丙烷及其混合物作为空调制冷剂可行性研究  

The Theoretical and Experimental Research for Natural Refrigerant Propane(R290) and Its Mixtures as Substitute for R22

作　　者：张于峰[1] 马九贤[1] 孙延禄[1] 唐汝宁[2] 

机构地区：[1]天津大学 [2]内蒙古工业大学

出　　处：《制冷学报》1999年第2期18-24,共7页Journal of Refrigeration

摘　　要：本文以节能和保护臭氧层为目标，研究以自然工质丙烷（Ｒ２９０）替代Ｒ２２的理论与实际应用的问题。本文首先利用数值解法编程计算了以丙烷为工质的小型制冷系统毛细管的长度，为以丙烷为工质的小型制冷系统毛细管的选择建立一定的理论依据。再以丙烷和Ｒ２２的热物性和理论循环分析为基础，在相应的小型制冷系统上进行了一系列的实验，结果表明：丙烷是一种很好的替代工质。另外，本文还对丙烷的可燃性进行了研究探索，提出了在丙烷中加入少量非可燃物以降低其可燃性的设想，并进行了相应的可燃性实验，结果表明：在丙烷中加入少量非可燃物可部分抑制其可燃性。This paper,based on the saving energy and protecting ozonosphere,had studied the theoretical and practical problems using propane as substitute for R22.The first,the capillary tube length in propane refrigerating system was completed by the numerical method.The calculated results were correspondent with actual conditions.In order to evaluate the performance of propane as possible alternative to R22,then we analyzed thermodynamic performance and theoretical refrigerating cycle of propane and R22.On the basis of theoretical analysis,a set of testing equipment that was made of refrigerator devices has been applied to measure the performance of propane in the refrigerating system.The testing results show that the performance of propane have had more superiority than R22 even though its volumetric capacity and COP had just below a little than R22.And the compatibility of propane system is better with the old one .All of above had certified that propane is a good alternative for R22.Finally,the flammability and the COP had been got by a series of tests using R290/R22 mixtures under various composition conditions.The testing results show that:the flammability of propane may partly reduced by mixing with R22.

关 键 词：制冷剂替代 丙烷 毛细管 可燃性 可行性 

分 类 号：TB612[一般工业技术—制冷工程] TU831.6[建筑科学—供热、供燃气、通风及空调工程]