METHODS FOR CONTROLLING DOUBLE-SUCTION LINE COMPRESSORS FOR REFRIGERATION SYSTEMS

摘要

The present invention relates to methods for controlling double-suction line compressors for use in refrigeration systems, capable of meeting different requirements with regard to cost, efficiency and temperature control by means of techniques of various complexity levels and different configurations of the elements of the control network (temperature sensors, actuators, controllers, etc). Among the proposed solutions, a method is described for controlling and adjusting the refrigeration capacity of a refrigeration system equipped with a double-suction line compressor, the refrigeration system comprising compartments to be refrigerated and at least two evaporators (20) arranged in the compartments (60, 70) to be refrigerated, while the double-suction line compressor (10) can be controlled so as to vary its compression capacity. The method comprises the following steps: (i) continuously measuring at least one temperature by means of a temperature sensor (SET.SCT) associated with at least one of the evaporators (20); and (ii) on the basis of the measurement obtained in step (i), acting upon the compression capacity of the compressor (10).