Patent ID: 9297548
Filing Date: 2016-03-29
CPC Classification: B60H,F24F,F25B,F25D

Claim Text:
1. A method for controlling the operation of a refrigerant vapor compression system for cooling a temperature-controlled space having a plurality of temperature controlled zones, the refrigerant vapor compression system including a refrigerant circuit through which a refrigerant mass flow is circulated by a compression device, said method comprising: controlling the refrigerant mass flow to provide a cooling capacity of the refrigerant vapor compression system in response to a collective cooling demand for said plurality of temperature controlled zones; each of the plurality of temperature controlled zones including an evaporator; and selectively dividing the refrigerant mass flow amongst the plurality of temperature controlled zones; wherein controlling the refrigerant mass flow comprises providing a variable speed compression device; and selectively varying an operating speed of the variable speed compression device in response to a sum of respective tuned temperature differentials between a sensed temperature and a related set point temperature associated with each respective zone of the plurality of temperature controlled zones, wherein each tuned temperature differential corresponds to a temperature differential between the sensed temperature and the related set point temperature associated with each respective zone of the plurality of temperature controlled zones multiplied by a respective tuning constant.