LEED Simulations

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If attempting to show percent improvement for LEED credit per ASHRAE
90.1-2007 Appendix G, who is the "rating authority" in section G1.4? USGBC?
There will be similar documentation submitted to USGBC I know, but is there
some piece of information I am missing? Does ASHRAE "rate" building
performance based on eQuest results?

Also, second question, is percent improvement based on energy usage, or cost
of energy usage with regards to LEED?

Thanks!

Tim

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tim
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I'm interested in people's opinions on how to
best model windows having ceramic frit.

Thanks in advance.

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Have you tried LBNL window v6? They have a fritted glass parameter. I haven't tried it yet personally, but it looks pretty good. You can build your own custom frit or shade layer in the window assembly.

Vikram Sami, LEED AP

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You can model frit with LBNL Window V6. However, the frit is limited to white unless you have optical data. You can then import a custom frit into Window6 using the optical data.

Yalin Uluaydin

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The rating authority for a LEED project is, essentially, USGBC - but
USGBC has more or less defined (if loosely) what is required for
documentation through the LEED EAc1 template/Handbook. You might do
better to keep section G1.4 in the back of your mind and instead refer
primarily to the current EAc1 template and associated Handbook chapter.

LEED EAc1 credits, using the first compliance (energy simulation)
method, are based on annual costs - not consumptions. I think that
syncs with 90.1's current glossary terms for performance...

NICK CATON, E.I.T.

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Just to add to what Nick said - the rating authority s now the GBCI (green building certification institute). The percentage is based on energy cost and not energy usage - so you might benefit from peak shavings in a TOU rate.

Vikram Sami, LEED AP

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My 2 Cents,

I just filled this part out on LEED online. You have to fill out your energy
information on EAp2 the prerequisite. That's where all the information is.
It gives you a good guide on what to do. That's also where you upload your
energy model information.

Thanks,

PETER HILLERMANN

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