Can anyone advise how I should go about running the energy model for a building whose supply air & outside air quantities are being driven not by actual load, but by Unified facilities Criteria (UFC)?
Should my proposed building airflow & subsequent energy use be reflective of the minimum REQUIRED airflows per ASHRAE and our proposed building envelope... or by the minimum ACH rates dictated by UFC?
How do I compare "apples to apples" with the baseline rotations that are governed by ASHRAE?
Thank you for any help that can be given... there is a DRASTIC difference in energy usage with these two methods.
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5868 thumbs up
April 25, 2011 - 9:09 pm
I am not very familiar with UFC. For LEED the supply air is dictated by your design and the baseline CFM by Appendix G. The OA quantities and infiltration rates need to be identical in both models.
Sara Zoumbaris
Sustainable Design Consulting30 thumbs up
March 4, 2015 - 1:41 pm
We are currently facing this issue for a federal building requiring UFC, any new updates or advancement of in-house knowledge? It seems to me this must happen often with any federal or government buildings...