Operating optimization for plural parallel connected chillers

Details Operating optimization for plural parallel connected chillers Operating optimization for plural parallel connected chillers

F - Mech Eng,Light,Heat,Weapons

24

F

45/15

F24F 1/00 (2006.01) F24F 11/06 (2006.01) G05D 23/20 (2006.01)

Patent

CA 1093304

ABSTRACT An optimization system for switching between plural parallel connected chillers in a refrigeration system is dis- closed which system establishes optimized changeover criteria based upon the design refrigerant head for the chillers, the minimum refrigerant head for the chillers, the capacity of the chillers at design head and the capacity of the chillers at minimum head, and which system, using these criteria, calculates optimized switchover capacity as a function of the present actual refrigerant head. The system then compares the optimized switchover capacity to the present building load and, if the capacity insufficient to meek the building load, an additional chiller is switched in and, if the optimized switchover capacity is greater than the building load and more than one chiller is operating, one of the chillers is disconnected.

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