Dear Equesters,
Am working on a warehouse project under the LEED NC. ??About 90% of the
spaces will be served by unit ventilators (no heating and cooling).
In this case the ?baseline system should be the same(UV) .
But what about the fans BHP? Should I use the same actual value for the
baseline or its should as per the equation in appendix G?
In the case study shown in the ?user manual, they used the same fan power
for the unit ventilators (but the example is for a ?parking garage) . but
that not make a sense in the warehouse case. if I used the same KW/CFM in
both model the energy saving will reduced from 30% to 7% only .
Any advice or sources could help in that?
Best regards,
Mohammad Al-Masri
CAPM,LEED AP BD+C
Mohammad,
The example case from the user's manual would be considered "process energy" which is why they used the same in both cases. For your case, because these are systems for an occupied space, I would typically model the baseline UV system with fan power according to G3.1.2.9. I'd be curious if anyone else uses a different approach, since this usually results in a very high energy savings percentage which might seem counter-intuitive. If you did have heating the approach would change dramatically.
JEREMY R. POLING, PE, LEED AP