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VAV system not meeting setpoints

Hi all

I am new to EnergyPlus, I have a VAV system with reheat to perimeter and a couple of internal zones. After running the model we have found there is currently no heating being done by the reheat coils for any of the VAVs connected to the AHUs. This is causing a unmet hours for some zones with AHUs that service perimeter and internal zones. The AHU’s overheat the space and only keep 1 zone at the heating setpoint.

We are able to reduce the unmet hours by effectively turning off the heating ciol at the AHU and letting the reheat coils heat the zones however this is not desirable. We think it might be an issue with the cooling coil setpoint reset type which is currently set to warmest.

VAV system not meeting setpoints

Hi all

I am new to EnergyPlus, I have a VAV system with reheat to perimeter and a couple of internal zones. After running the model we have found there is currently no heating being done by the reheat coils for any of the VAVs connected to the AHUs. This is causing a unmet hours for some zones with AHUs that service perimeter and internal zones. The AHU’s overheat the space and only keep 1 zone at the heating setpoint.

We are able to reduce the unmet hours by effectively turning off the heating ciol at the AHU and letting the reheat coils heat the zones however this is not desirable. We think it might be an issue with the cooling coil setpoint reset type which is currently set to warmest.

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