COOLING MEDIUM HEATING APPARATUS AND HEATING CAPACITY CONTROL METHOD

摘要

A cooling medium heating apparatus by which controllability can be improved and power consumption can be reduced, and a heating capacity control method for such apparatus are provided. A cooling medium heating apparatus (4) is provided with a heater (12) and a control section (17). The heater (12) heats a cooling medium. The cooling medium flows inside of a cooling medium circuit (10). The control section (17) controls operation of the heater (12). The control section (17) controls the heater (12) to start heating of the heater (12) when the operation frequency of a compressor (22) is at a maximum operation frequency. The maximum operation frequency is the maximum value of the operation frequency of the compressor (22).