Forum discussion
NC-2009 EAp2: Minimum Energy Performance
We have a project that is planning to use energy recovery from a nearby data center. The rest of the heat and cooling are provided by a district plant. I wonder how would we treat the energy recovery from nearby site. Do we treat it as free energy since it is heat rejection from cooling equipment or still need to treat it as purchase energy.
Thanks!
LEEDuser is supported by our premium members, not by advertisers.
Go premium forTo post a comment, you need to register for a LEEDuser Basic membership (free) or login to your existing profile.
A portion of our building envelope is historic. Can we exclude it from our model?
For an existing building, do I need to rotate the model?
Our process load is higher than 25%. Do we have to justify that?
Our local code references ASHRAE 90.1-2010. Should I use that for my documentation, or 90.1-2007?
Can mezzanines open to floors below be excluded from the energy model?
How do I provide a zip code for an international location?
For a project outside the U.S., how do I determine the climate zone?
For a project outside the U.S., how do I determine the Target Finder score?
Do hotel rooms need automatic light shut-off control?
How commonly are the 90.1 mandatory compliance forms submitted as part of EAp2/EAc1?
The Section 9 space-by-space method does not include residential space types. What should I use?
Can the Passive House Planning Package (PHPP) be used to energy model for LEED?
Which baseline HVAC system do I use if my building has no heating or air conditioning?
Our project has a diesel backup generator. Should we include it in our energy model?
Can SHGC be higher in the proposed than in the baseline model?
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5909 thumbs up
July 6, 2015 - 11:56 am
Too many unknowns to answer.
Is this a campus scenario? Is the data center, central plant and your project owned by the same owner?
Does the same central plant also serve the data center?
How is the data center heat rejection being reclaimed?
Haojie Wang
Energy ModelerKJWW Engineering
4 thumbs up
July 6, 2015 - 12:05 pm
Sorry. Let me add more info. This is similar like a campus but its lab type with multiple buildings on site. The place where we are recovering heat is from a data center on site. The same central plant serve all the buildings on site and it is owned by the same owner. The data center needs cooling all year long so it still uses cooling plant to reject heat when other buildings need heating. The heat is recovered by a heat recovery chiller in the central plant. Thanks for looking into this Marcus
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5909 thumbs up
July 6, 2015 - 12:13 pm
Looks like you could claim this efficiency gain under DESv2 Option 2 but not under DESv2 Option 1. This energy recovery would be a factor in the overall central plant efficiency under Option 2.
Haojie Wang
Energy ModelerKJWW Engineering
4 thumbs up
July 6, 2015 - 12:30 pm
Thanks. I will look into that in more depth