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?

View answers »

Forum discussion

NC-2009 EAp2:Minimum Energy Performance

Framed assembly U-value calculated by WinISO 2D Software

Hi, As per reviewer comment the calculation for U-value of whole window assembly (including frame) used for the Proposed case windows can be demonstrated by different method such as NFRC rating, Window 5 software or simulation tool. The client sent me a complete assembly report developed in WinISO tool. The calculation has been done according to DIN EN ISO 10077-2. Question is: Is this methodology acceptable in LEED?

1

You rely on LEEDuser. Can we rely on you?

LEEDuser is supported by our premium members, not by advertisers.

Go premium for $15.95  »

Tue, 06/03/2014 - 14:05

I am not familiar with that standard but a quick online search indicates that it would be an appropriate tool/standard. While I can't say for certain I would think it would be acceptable.

Wed, 06/04/2014 - 08:13

Thank you Marcus for your view.

Wed, 06/04/2014 - 12:07

It seems as if the difference is minimal. I've posted a step by step to go from EU-rated values to American-rated values for fenestration here: http://www.designbuilder-big.com/index.php/2013-02-25-13-40-45/2013-02-25-13-45-50/2013-02-25-13-45-51 It's aimed at energyplus / designbuilder users, but will be helpful to all who want to test this. It's still in the review phase by the WINDOW developement team.

Mon, 11/30/2015 - 11:43

Hi all, Has anyone got an acceptance using the ISO 10077 standard for window assembly U-value calculation? Many thanks!

Mon, 11/30/2015 - 12:01

We were uploading U-value calculations according to ISO 10077 standard provided by the window producer and so far it was accepted for a few projects.

Add new comment

To post a comment, you need to register for a LEEDuser Basic membership (free) or login to your existing profile.