Patent ID: 6442953
Filing Date: 2002-09-03
Classification: B60H,F24F

Abstract:
A method for diagnosing performance of an air-conditioning system, comprising the steps of:a) identifying whether the air-conditioning system comprises a fixed orifice type configuration or a thermostatic expansion valve type configuration; b) determining a temperature differential between inlet and outlet temperatures of a condenser in the air-conditioning system; c) determining a temperature differential between inlet and outlet temperatures of an evaporator in the air-conditioning system; d) determining a temperature differential between ambient and vent temperatures in the air-conditioning system; e) analyzing the differentials of the condenser, evaporator and ambient and vent temperatures for the fixed orifice type configuration and analyzing the differentials of the condenser and ambient and vent temperatures for the thermostatic expansion valve type configuration; f) determining whether the air-conditioning system is properly functioning; and g) diagnosing performance of the air-conditioning system.