Patent ID: 7757505
Filing Date: 2010-07-20
Classification: F25B

Abstract:
1. A method of controlling a commercial refrigeration system having at least one compressor, evaporator, and controller, the method comprising: calculating, by the controller, a control parameter necessary to correct a difference between a desired cooling capacity and a detected cooling capacity; predicting, by the controller, a first change in cooling capacity required by the commercial refrigeration system based on at least one anticipated system event and a first latency parameter, the first latency parameter substantially indicative of a first time period between a time at which a cooling capacity is changed at the compressor and a time at which an output of the at least one evaporator changes responsive to the change in cooling capacity at the compressor; predicting, by the controller, a second change in cooling capacity required by the commercial refrigeration system based on the at least one anticipated system event and system events anticipated to occur during a second time period substantially immediately following the at least one anticipated system event; comparing the first change in cooling capacity to the second change in cooling capacity; and implementing an actual change in cooling capacity based on a relationship between the first predicted change in cooling capacity and the second predicted change in cooling capacity.