Forum discussion
NC-2009 EAp2: Minimum Energy Performance
Hi, I have a District energy system (chillers, boilers, cooling towers, pumps) serves 3 buildings but only 1 pursues LEED, so my project doesn't use total capacities of those equipments. My concern is for proposed case, do i have to calculate by hand the equipment capacities for my building based on equipment schedule. It could be tough and not precise to do. Or I let software autosize capacities for the proposed case and I used this as the input
Many thanks to your advice
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Haojie Wang
Energy ModelerKJWW Engineering
4 thumbs up
April 24, 2015 - 11:48 am
I also have a similar situation. But my question is should we treat this as district energy or should we only calculate a capacity for this building and treat like a regular system
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5909 thumbs up
April 24, 2015 - 1:12 pm
Sounds like a district system to me.
You have options use the DESv2 - http://www.usgbc.org/Docs/Archive/General/Docs7671.pdf - or apply ASHRAE 90.1-2007 Addendum ai.
Indochine Engineering VN
Environmental Engineer, LEED AP BD+C10 thumbs up
May 4, 2015 - 12:50 am
Hi, thank you very much for your advice.
I would like to ask if I submit energy model in design stage, and then get feedback from GBCI, can I rerun energy model and resubmit energy model in Construction stage rather in the second round of design stage?
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5909 thumbs up
May 4, 2015 - 9:21 am
Not sure why you would want to do so?
Lawrence Lile
Chief EngineerLile Engineering, LLC
76 thumbs up
May 7, 2015 - 12:15 pm
Hieu, I always recommend teams submit the energy model in design phase. Teams almost always get review comments which are then addressed. Once the review comments are satisfactorily addressed, and the credit is marked "anticipated", there is no need to re-submit it during the construction phase. Perhaps that answers your question?