Hi,
I am modeling a hybrid DX-Evaporative Cooler system with the location set to Phoenix Arizona. However, my evaporator turns off during the peak summer months of July and August, when the outdoor Dry-bulb is 42 deg. C and the wetbulb is around 22 C.
I have no limits on the operation of the evaporative cooler; however, the outdoor air controller is set to have a maximum of 27 C for the economizer mode and the OA mixing box inlet node is set to have a setpoint that varies between 15 and 35 deg C. Can anyone offer a possible explanation and a fix. I'd greatly appreciate the help.
