Mark Allen Kirkwold,Cole K. Farley,James M. Lundgreen
申请号：
US14598880
公开号：
US09675719B2
申请日:
2015.01.16
申请国别(地区):
US
年份:
2017
代理人:
摘要：
A staging control process for an evaporative media cooling system having a plurality of media stages is disclosed. In one step, a leaving air dry bulb temperature setpoint for air exiting the evaporative media cooling system is received or defined. In one aspect, an expected media exit dry bulb temperature is calculated for each media stage based on a dry bulb temperature and a wet bulb temperature of air entering the media cooling system and based on a measured or assigned condition of the media. In another aspect, an estimated combined leaving dry bulb temperature is calculated for different combinations of activated and deactivated media stages. Once the estimated leaving temperature is known, the method can then activate the media stage(s) associated with the combination that has an estimated combined leaving dry bulb temperature that is nearest to but less than the leaving air dry bulb temperature setpoint.
