Patent ID: 9696067
Date: 2017-07-04
CPC Classifications: F24D,F25B,Y02B

Claim:
1. A method for heating an airflow, the method comprising: sensing a temperature of a first heat exchanger; identifying a speed of a compressor, the compressor adapted to compress a refrigerant; determining a heating capacity of a second heat exchanger; determining a target leaving temperature from the second heat exchanger; measuring an inlet temperature of air entering the second heat exchanger; determining a volumetric air flow based on the determined heating capacity, the target leaving temperature and the inlet temperature; determining a blower speed for an air blower using the temperature of the first heat exchanger, the speed of the compressor and the volumetric air flow; and operating the air blower at the determined blower speed to direct a flow of air across the second heat exchanger to heat the airflow to a leaving air temperature.