Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Here are a few things that I found for a building with VAV system
1). the zonal input for heating capacity is for reheat coil under compliance calculation (energy+);
but the .doe file in the SBD calculation shows the capacity is read as "baseboard" capacity, which was the case for previous version Energypro.
After I delete all heating capacity at the zonal system in the Design Case, the TDV heating energy consumption is reduced by 70%.
2). VAV turndown ratio must be higher than the min ventilation requirement and the min exhaust under compliance calculation (energy+); but the .doe and .sim file show the VAV turndown ratio for all zones are 0.2. After I changed all VAV turndown ratio to 0.2 in the Design Case, the TDV fan energy is reduced by 35%.
That's what I observed from test runs.
