I want to model a Direct Evaporative Cooler for a multi-zone residential building. I have found the example "1ZoneEvapCooler" which uses an "AirLoopHVAC" object. My question is what is the difference between the AirLoopHVAC and the "ZoneHVAC:EvaporativeCoolerUnit" object when simulation an evaporative cooling system.
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