Patent ID: 6223545
Filing Date: 2001-05-01
Classification: F24F,Y02B

Abstract:
A method for operating a combined refrigeration system and evaporative cooling system that maintains a structurally enclosed space proximate a desired comfort level, said refrigeration system and evaporative cooling system having a first configuration that exploits an evaporative cooling apparatus and a second configuration that exploits a refrigeration apparatus, said method comprising the steps of:obtaining sensor signals from a temperature sensor and a relative humidity sensor of said system, said temperature and relative humidity sensors sensing environmental conditions external to said system;converting said sensor signals into external ambient dry bulb temperature and external ambient dew point;determining said desired comfort level;selecting one of said first configuration and said second configuration to be an initially selected configuration in response to said converting step and said determining step, said selecting step being performed by a controller; andactuating a damper by said controller in response to said selecting step to configure said system to operate in said selected configuration.