Dear all,
I have a case where I need to know if I should model separate Pantry zone in Both Basecase and Proposed Case, or in Basecase only?
I have an office building with one System 8 per floor in Basecase. and one AHU with multiple VAVs in proposed case. Each floor has one FCU for its pantry zone in the proposed case.
I need to know if I have to model this pantry separately in the proposed case only, in both proposed case and basecase (with a system 4 in Basecase), or I can neglect this zone and assume it follows the rest of the floor as it is only?
Another question is: on the basement floor I have 4 zones (entrance lobby, driver room, UPS room, and Prayer room) each is served by one FCU in the proposed case. Can I gather these four spaces as one (System 4) in Basecase, and one FCU in the proposed case? or they should be separated into 4 zones (thermal blocks)?
Thanks
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5916 thumbs up
December 3, 2014 - 11:26 am
The proposed is modeled as designed.
The baseline per Appendix G. You should only model a separate zone for the pantry if one of the exceptions to G3.1.1 applies.
The rules for creating thermal blocks are spelled out in Table G3.1-7. Based on your descriptions it does not sound like you can consolidate those zones. If your building is a system 8 then the basement floor should also be a system 8 unless one of the exceptions to G3.1.1 applies.