[Bldg-sim] DOE2 Glass Library

[D. Charlie Curcija]

Tvis and VT are the same thing, just different nomenclature.  WINDOW program
gives VT=Tvis=0.723 for this configuration, so it must be a typo.

 

D. Charlie Curcija 
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From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Nick Caton
Sent: Thursday, April 01, 2010 10:15 AM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] DOE2 Glass Library

 

Just picked up on something concerning me.

 

Entry #6584 for "Solarban 60 Clr/Arg/Clr 3" lists a Visible Transmittance
(TVIS) of 0.45.  When I select this entry within eQuest, eQuest tells me it
has VT = 0.72 (which notably matches the Solarban literature).

 

This is throwing me off a bit. I thought VT and TVIS are the same thing.  If
not, what is the difference and which should we be using to determine the
percentage of light within the visible spectrum that transmits through
glass?

 

Is this possibly just a typo in the DOE2 Glass library (as accessed through
eQuest)?

 

cid:489575314 at 22072009-0ABB

 

NICK CATON, E.I.T.

PROJECT ENGINEER

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