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描述冷水机组特别是大型机组最常用的替代制冷剂。总结了蒙特利尔议定书所制定的制冷剂淘汰时间表。对冷水机组(压缩式与吸收式)目前所使用的制冷剂进行探讨,包括大气寿命、ODP与GWP。概述了离心式冷水机组的最低能效标准。对主要的制冷剂进行科学评估。介绍了除R-123以外的其他替代制冷剂。研究表明,R-123作为目前离心式冷水机组应用最广泛的制冷剂,其ODP与GWP较低,且大气寿命短,放射率低,效率高。对中国而言R-123至少在未来的几十年内仍具有非常显著的环境和经济优势。
Describe the most commonly used alternative refrigerants for chillers, especially for large units. Summarized the Montreal Protocol to develop a refrigerant out of schedule. Refrigerants currently used in chillers (compression and absorption) are discussed, including atmospheric life, ODP and GWP. Outlines the minimum energy efficiency standards for centrifugal chillers. Conduct a scientific assessment of the major refrigerants. Alternative refrigerants other than R-123 are introduced. The research shows that R-123, as the most widely used refrigerant in centrifugal chillers, has low ODP and GWP, short atmospheric life, low emissivity and high efficiency. For China, R-123 still has a very significant environmental and economic advantage for at least the next few decades.