FAQs about EAp2 :

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?

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?

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?

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Forum discussion

NC-2009 EAp2:Minimum Energy Performance

ASHRAE 90.1 2004 TABLE 6.8.1D

Hi, Our problem is with PTHP (cooling mode) new construction. The footnote 'c' is bit confusing. According to the footnote, the capacity should be in KW and some publish documents say it should in Btu/hr. Can anyone help us to resolve this issue. Regards, KC

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Fri, 11/08/2013 - 15:13

Are you using the SI or IP version? My IP version says BTU/h.

Sun, 11/10/2013 - 05:40

Hi Marcus, This is SI edition. The equation is 3.60-(0.213*Cap/1000). If the input is in kW, we believe, deviding the Cap by 1000 is not required. Any idea? Regards, KC

Tue, 11/12/2013 - 14:39

I just saw you were asking about 90.1-2004? This version of the standard does not apply to LEED 2009 projects. So you might want to check the 2007 version of the standard and any addenda which may apply. If this is an error I am sure it was caught by now. The results of the calculation should be pretty obvious as the COP should be a single digit number. You could check it against the IP version formula - 12.5-(0.213*cap/1000) EER. COP = EER/3.412

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