[Equest-users] Ceramic Insulating Paint Additives

[Sami, Vikram]

I'm pretty sure the ceramic additives do not really affect R-value. They affect the emittance of the paint surface (low-e paints use this). As far as I know you cannot account for surface emittance in eQUEST.

I'm not saying that it doesn't work or it doesn't have benefits - however you need to be careful when you mix thermal metaphors. It may be ok to assume an added R-value for this paint, but I doubt it. Its probablye more effective in hot climates than in cool climates - but additional R-value will have more effect in cold climates than in hotter ones. (this is a guess - I haven't done any simulations to support this).

Other simulation programs like E+ or IESVE might be able to simulate emittance better, but I can't speak to that.

Good luck.

-Vikram

________________________________________
From: equest-users-bounces at lists.onebuilding.org [equest-users-bounces at lists.onebuilding.org] On Behalf Of steinvor at msu.edu [steinvor at msu.edu]
Sent: Monday, August 08, 2011 7:58 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Ceramic Insulating Paint Additives

Hello:

Has anyone tried a simulation with insulating ceramic paint additive?
How does USGBC think about this for LEED? How is the R value defined?
I appreciate any comment or suggestion about this.

Thanks!

Federico

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