How to model the VAV system correctly?

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Hi sir,

I don't know why my model hourly result shows that the supply fan flow did not change much as the internal cooling load change.

The building is has very large internal heat gain (1000W/ft^2) from the computer equipment

Somehow the fan flow rate at 50% load is same at 100% load, the only change is return to cooling coil temperature. The supply temperature is about 68F

How can i set the return temperature to be constant and let the flow rate to change to match the internal load?


shawn_situ's picture
Joined: 2015-03-30
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