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R515A制冷剂用于水冷式冷水机组的理论与试验研究

Jia Lei,Cheng Liquan,Cai Songsu, Zhao Panpan, Jia Jia, Cheng Yongqiang

Refrigeration and Air-conditioning（2023）

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Abstract
R515A是水冷式冷水机组领域 R134a 的低 GWP 替代品之一,本文在分析 R515A 冷水机组理论循环特性的基础上,研发使用 R515A 制冷剂的水冷式冷水机组.在名义工况下开展 R515A 机组与R1234ze(E)机组、R134a机组的性能对比,并测试变工况下 R515A 机组的运行特性.结果表明:相同工况条件下,R515A机组的COP与R134a基本相当,制冷量和功率均降低 22%～30%;R515A机组在全部测试工况下的排气温度为 45～60℃.综合考虑制冷剂充注量、政策影响、减排效果及机组替代成本等因素,R515A在水冷式冷水机组领域的推广前景良好.
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Key words
water-cooled water chiller,COP,refrigerant,R515A,R1234ze(E),R134a
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