I am trying to model an airloop in OpenStudio 2.7 (energyplus 9.0) with a direct evaporative cooler on it.
The above airloop has a setpoint manager after the direct evap object. I have tried both a "setpoint manager single zone cooling" set for a range of 0 degrees F to 210 degrees F and a "setpoint manager schedule" set for a constant temperature of 70 degrees F. The setpoint manager on the supply air node is a "setpoint manager single zone reheat" set with a very wide range. The inputs for my direct evap object are below:
The model results in over 500 cooling hours in this zone. I have set an output variable to generate in a csv for the dry bulb temperature of the node before the direct evap cooler and after the direct evaporative cooler. Looking at the temperatures for each hour of the year it is clear that the direct evap cooler is not doing anything to change the dry bulb temperature of the air loop except when the outdoor air is above 90 degrees F (i.e. on the summer design day). I have looked up and down through the energyplus input output reference guide and through my .osm file and I cannot figure out what is preventing the direct evap cooler from working turning on below 90 degrees.
