FAQs about EAp2 :

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?

Do I need to justify the electrical and fuel rates I am using in my model?

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?

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?

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?

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Forum discussion

NC-2009 EAp2:Minimum Energy Performance

Process Energy - Difference between Proposed & Baseline

Dear all, Can someone please advise on what are the conditions to claim an exceptional calculation for process energy, for having the proposed process energy less than the baseline's? For example, we're working on one project whereby the design team is planning on installing highly efficient elevators. Is this something we can take advantage to? Thanks!

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Fri, 07/13/2012 - 15:49

Yes you can. You will need to provide a narrative and calculations. The narrative must justify the chosen baseline for your location (i.e. what is standard practice for elevators in similar buildings in your area?).

Tue, 09/04/2012 - 19:23

Thanks Marcus. In that narrative, do you need to actually reference an SBD/Case Report for that local standard or can you claim it based on first-cost models available? What is common and typical in claiming a "baseline"? I'm not an engineer so forgive my ignorance. We have a similar question for project regarding the high-speed roll-up doors and in-folding dock levelers we are using to minimize air infiltration heat loss in a cold storage facility. Our problem is we can't find a cold storage industry "baseline standard" for these features. But can we demonstrate the energy efficiency based on common, first-cost alternates and use straight-up calculation in the narrative to estimate the comparative savings?

Tue, 09/04/2012 - 20:27

Referencing a local standard can help. It is up to you to tell the reviewer what you believe is the local standard. The more data or information you can use to back it up the better. Basically what is standard industry practice in your area for the installation you are wanting to claim savings for against the baseline? For example, are strip curtains typical practice in your application instead of high speed doors? The lowest first cost alternative in this case could be nothing installed in the opening which may or may not be an appropriate baseline. You need to make the case for the baseline you use. If the lowest first cost alternative is standard practice then it can be the baseline.

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