We are using packaged VAV with reheat system 5 for the Baseline System. In sizing the baseline heating coils and fans within this system should the air flow rates and and on coil / off coil temperatures match the proposed building system.?
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Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5868 thumbs up
April 25, 2016 - 10:39 am
The airflow rates are auto-sized along with the heating capacity. See G3.1.2.2 for equipment capacities, G3.1.2.8 for airflow rate/temperatures, and G3.1.2.9 for fans. The room temperature settings should be identical to the proposed.
Ciaran McCabe
DirectorPassive Dynamics Sustainability Consultants
12 thumbs up
May 8, 2016 - 4:31 pm
Thanks Marcus. Just wondering should the Outside Air supply rate be the same for the proposed and baseline rooms modeled ?
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5868 thumbs up
May 9, 2016 - 9:25 am
Unless the proposed has demand controlled ventilation the total outside air should be in the same in both models. Since you do not necessarily create a model on a room-by-room basis I am not sure it translates down to the room level. A system #5 according to G3.1.1 must be modeled as a system per floor. So the OA for that system on that floor should correspond to the total outside air of the proposed systems serving that floor.