×

Estimating evaporator airflow in vapor compression cycle cooling equipment

  • US 6,973,793 B2
  • Filed: 07/07/2003
  • Issued: 12/13/2005
  • Est. Priority Date: 07/08/2002
  • Status: Active Grant
First Claim
Patent Images

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.

View all claims
  • 7 Assignments
Timeline View
Assignment View
    ×
    ×