汽车空调中低GWP替代制冷剂的研究现状

摘要

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。%R134a is the most widely used refrigerant in mobile air conditioning (AC) system, but it’s now being replaced. The research progress of the low GWP alternatives to R134a in mobile AC system, such as 1234yf, AC5, AC6 and R744, are introduced. The physical properties, system performances, material compatibility and safety performance of novel low GWP refrigerants will be introduced. In the progress of choosing the right refrigerant, environmental as well as economic effects should be taken into consideration to find the appropriate ones.