[Equest-users] U-values in Detailed Mode

[Nick Caton]

As a heads up, your question posed will only draw opinions as "what's
required" in this regard is not crystal-clear.  

 

That said, I would direct you to read the eQuest/DOE2 help entries for
constructions to understand and consider the difference between
"weightless" U-value only definitions and "weighted" layered
constructions.  Read up in the mailing list archives for further
discussion/explanations.

 

Until you feel comfortable understanding what "weightless" constructions
entail, and where that will and won't cause a problem in the modeled
behavior, I would advise sticking with layered constructions and
defining material masses alongside their thermal transfer properties.  

 

I personally work from envelope details for exterior constructions to
build from scratch, which the architect should have readily available.
You're right to feel concerned about "shortcuts"... Energy modelers who
rely entirely on others' calculations without performing their own
checks along the way can be sailing dangerous waters. 

 

~Nick

 

 

 

NICK CATON, P.E.

SENIOR ENGINEER

 

Smith & Boucher Engineers

25501 west valley parkway, suite 200

olathe, ks 66061

direct 913.344.0036

fax 913.345.0617

www.smithboucher.com 

 

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of DongEun
Kim
Sent: Tuesday, June 28, 2011 8:04 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] U-values in Detailed Mode

 

Hi all,

 

My architect has given me only the U-values for the walls, not R-values
or anything.

 

Can I just directly put the U-values in the detailed mode? It is simple
but seem too much of a short cut.

 

Any advice on this? 

 

Thank you in advance.

 

DE

 

 

	Kim, DongEun(DE) | Research Engineer, LEED AP
	Annex R&D Institute, HIMEC(Hanil Mech. & Elec. Consultants)

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