Patent ID: 6973793
Filing Date: 2005-12-13
Classification: F25B

Abstract:
1. In vapor compression equipment having a compressor, a condenser, an expansion device and an evaporator arranged in succession and connected via a conduit in a closed loop for circulating refrigerant through the closed loop, a process for determining the airflow rate through the evaporator, the process comprising the steps of: obtaining the suction dew point and discharge dew point temperatures from the suction line and liquid line pressures; obtaining the refrigerant mass flow rate that corresponds to the compressor in the vapor compression cycle for the dew point temperatures and suction line superheat; obtaining the enthalpies at the suction line and at the inlet of the evaporator; obtaining the enthalpies of the air entering and leaving the evaporator; and calculating the airflow mass flow rate across the evaporator.