Patent ID: 6637729
Filing Date: 2003-10-28
Classification: A01K,F24F,Y02A,Y02B,Y02P,Y10S

Abstract:
Evaporative cooling apparatus including(a) at least one nozzle for emitting water droplets above the ground; (b) fan means to produce air flow to direct said water droplets in a selected direction; (c) pressure means for directing water through said nozzle; (d) control means for generating an activation signal to activate said fan means when the ambient air temperature reaches or exceeds a selected control temperature, said control means including (i) sensor means for sensing the ambient air temperature at selected time intervals, (ii) memory means for recording said ambient air temperatures sensed at said selected time intervals by said sensor means, (iii) means for periodically repeatedly calculating at selected times of day using said recorded ambient air temperatures light temperature averages during first time period having a selected length, heavy temperature averages during a second time period having a selected length greater than said first time period, generating said activation signal when an uptrend occurs and one of said light temperature average and said heavy temperature average at least equals said selected control temperature.