Control of multiple zone refrigerant vapor compression systems

摘要

A refrigerant vapor compression system and a method of controlling the system are adapted for controlling the distribution of cooling capacity between two or more temperature controlled zones.

主权项

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.