FAQs about EAp2 :

Can the Passive House Planning Package (PHPP) be used to energy model for LEED?

Is it acceptable to model a split-type AC with inverter technology compressor as a heat pump, like modeling VRF?

Can the Trace 700 'LEED Energy Performance Summary Report' by uploaded to LEED Online in lieu of the Section 1.4 tables spreadsheet?

A portion of our building envelope is historic. Can we exclude it from our model?

Which baseline HVAC system do I use if my building has no heating or air conditioning?

For an existing building, do I need to rotate the model?

Our project has a diesel backup generator. Should we include it in our energy model?

Our project has a large process load—75%. Despite our efforts to make an efficient HVAC design, the cost savings are minimal. What can we do to earn this prerequisite and be eligible for LEED certification? Is there any flexibility in how we model the p

Can SHGC be higher in the proposed than in the baseline model?

Our process load is higher than 25%. Do we have to justify that?

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Our local code references ASHRAE 90.1-2010. Should I use that for my documentation, or 90.1-2007?

Can I claim exterior lighting savings for canopy lighting even though a baseline model cannot include shading elements?

The project is built on a site with existing exterior lighting installed. How should this be accounted for?

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How commonly are the 90.1 mandatory compliance forms submitted as part of EAp2/EAc1?

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Forum discussion

NC-2009 EAp2:Minimum Energy Performance

Energy recovery from a nearby data center?

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!

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Mon, 07/06/2015 - 15:56

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?

Mon, 07/06/2015 - 16:05

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

Mon, 07/06/2015 - 16:13

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.

Mon, 07/06/2015 - 16:30

Thanks. I will look into that in more depth

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