用于蓄冷空调的替代型制冷剂水合物研究进展

Alternative Refrigerant Hydrate for Cold Storage Air Conditioners

蓄冷空调技术可以应用于移峰填谷,对实现电力资源的高效利用有着巨大的帮助。水合物作为新型的蓄冷工质具有蓄冷密度大、比体积小等优点。传统的水合物工质如CFC、HCFC制冷剂虽然蓄冷性能优良但对环境造成了负面影响,基于环保与节能问题的考虑,HFC、HFO、CO2和烷烃类制冷剂中几种替代型制冷剂有望成为未来水合物工质研究的重点,具体包括制冷剂R134a、R1234yf、CO2、R290、环戊烷、R600a及其混合制冷剂。为促进替代型制冷剂水合物更快投入蓄冷空调的应用,目前主要改善相应替代型制冷剂水合物生成的技术方法有机械搅拌、添加剂等。

The technology of cool storage air conditioners is of great help to achieve peak load shifting and alleviate the depletion of power resource.Hydrate has some unique advantages as a new type of cold storage working fluid such as large cold storage density and small specific volume.Based on the considerations of environmental protection and energy conservation,several alternative refrigerants of HFC,HFO,CO2 and alkane refrigerant can become hydrate working fluid,specifically R134 a,R1234 yf,CO2,cyclopentane,R600 a and their mixture refrigerant.To promote the application of alternative refrigerant hydrate into cold storage air conditioners,some technical methods to improve the refrigerant hydration have been proposed such as stirring and additives.