ENTHALPY BASED CONTROL FOR A REFRIGERATION APPLIANCE

摘要

A control system for a refrigeration appliance is provided. The control system uses a linear model that is designed to minimize or remove excess enthalpy from one or more compartments and/or features of the appliance. At least one variable speed compressor is operated at a speed that will remove excess enthalpy within a desired time period while also operating at an optimized speed for energy efficiency.

主权项

1. A method of operating a refrigerator appliance having a variable speed compressor, the steps comprising:
receiving a set point temperature Ti-SP for a component of the appliance; measuring the temperature Ti of the component; calculating an excess enthalpy Hi of the component from the steps of receiving and measuring; determining an instantaneous cooling capacity required Cap to reduce the excess enthalpy Hi substantially to zero within a selected time period Ts; and calculating a compressor speed that delivers at least the instantaneous cooling capacity required Cap while minimizing power consumption of the compressor.