专利名称：System and method for control of a
transcritical refrigeration system
发明人：John Wallace,Franklin Beltran,Samuele Da
Ros
申请号：US14162792申请日：20140124公开号：US09625183B2公开日：20170418
专利附图：
摘要：A system and method for a COrefrigeration system includes a compressor, aheat exchanger, a liquid receiver, a first valve, and a valve controller. The heat exchanger
operates as a gas cooler when the COrefrigeration system is in a transcritical mode andas a condenser when the COrefrigeration system is in the subcritical mode. The first valvecontrols a flow of refrigerant from the heat exchanger to the liquid receiver. The valvecontroller monitors an outdoor ambient temperature and a pressure of refrigerantexiting the heat exchanger, determines whether the COrefrigeration system is in thesubcritical mode or in the transcritical mode, determines a pressure setpoint based onthe monitored outdoor ambient temperature, and controls the first valve based on acomparison of the determined pressure setpoint and the monitored pressure when theCOrefrigeration system is in the transcritical mode.
申请人：Emerson Climate Technologies Retail Solutions, Inc.
地址：Kennesaw GA US
国籍：US
代理机构：Harness, Dickey & Pierce, P.L.C.
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