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Refrigerant charge adequacy gauge

  • US 20060137364A1
  • Filed: 12/27/2004
  • Published: 06/29/2006
  • Est. Priority Date: 12/27/2004
  • Status: Active Grant
First Claim
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1. A method of determining the sufficiency of refrigerant charge in an air conditioning system having a compressor, a condenser coil, an expansion device and an evaporator coil fluidly interconnected in serial refrigerant flow relationship, comprising the steps of:

  • measuring the temperature of the liquid refrigerant leaving the condenser coil;

    measuring the temperature of the condenser coil; and

    computing the CTD by subtracting the liquid refrigerant temperature from the condenser coil temperature.

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