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当今汽车空调中最广泛使用的制冷剂为R134a。随着环保形势的不断严峻,R134a即将面临被替代的命运。本文将对R134a的低GWP替代制冷剂R1234yf、AC5、AC6及R744的研究现状作出综述,介绍内容将包括低GWP制冷剂的主要性质、替代性能、材料兼容性及安全性等。在选择汽车空调中的新制冷剂时,需充分考虑环境及经济因素,以确定合适的制冷剂。
The most widely used refrigerant in automotive air conditioners today is R134a. As the environmental situation continues to be harsh, R134a is about to face the fate of being replaced. This article reviews the research status of R134a low-GWP alternative refrigerants R1234yf, AC5, AC6 and R744. The introduction will cover the main properties, alternative performance, material compatibility and safety of low-GWP refrigerants. When choosing a new refrigerant in a car air conditioner, environmental and economic considerations must be taken into account to determine the appropriate refrigerant.