摘要:介绍了CO2作为制冷工质的特点及CO2载冷剂系统的形式,讨论了CO2载冷剂系统替代传统载冷剂系统和直接制冷系统的可能性。进行了R507A/CO2载冷剂模块机组的开发测试,结果表明:R507A/CO2载冷剂系统所需制冷剂充注量可减少60%,载冷剂回气管管径有效减小;CO2的制冷效果好,可缩短机组的日运行时间。
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