Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
I have modeled indirect evaporative cooling in the VE before. My system had two stages of evaporative cooling on the exhaust side that then runs through a heat exchanger. I ended up having to model the evaporative cooling with cooling coils rather than the spray chamber component. The possible controlled variables for the spray chamber were too limited. I controlled the cooling coils via heat transfer using the value from the manufacturers materials for each stage. I used an 80% sensible effectiveness for the heat exchanger. The cooling coil controls staged on and off based on the supply side leaving DBT off the heat exchanger. I hope this helps even though it's a bit late.
