MODE SWITCH TYPE REFRIGERATION SYSTEM CONTROL DEVICE USING THERMAL LOAD INFORMATION, AND CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To provide a mode switch type refrigeration system control device using a thermal load information and a control method capable of reducing an energy consumption and enhancing a stability and an immediate responsive property of temperature control. SOLUTION: A thermal load function operator 61 operates a thermal load function value from an air temperature Tev at an inlet of evaporator 51 and an air flow rate value or a FAN set value Fn corresponding to the air flow rate value. A plurality of controllers 65 are arranged and a temperature of the respective controllers 65 can be adjusted such that a car room temperature Tin becomes a target temperature Tr. These respective controllers 65 are previously designed corresponding to the thermal load function value. The mode switch device 63 selects a controller 6 based on the thermal load function value operated by a thermal load function operator 61.