[Greenbuilding] [BULK] Re: Super Therm Paint

[Lawrence Lile]

Kieth, it might be interesting to talk them out of a pint of this stuff,
and set up an experiment.  It is possible that a buddy of mine still has
his old insulation test box, which is a big foam insulated box with
temperature sensors inside.  Hey, it's either us, or Mythbusters, right?

 
 
Lawrence Lile, P.E., LEED AP


-----Original Message-----
From: greenbuilding-bounces at listserv.repp.org
[mailto:greenbuilding-bounces at listserv.repp.org] On Behalf Of Keith
Winston
Sent: Wednesday, March 07, 2007 10:47 AM
To: Greenbuilder list
Subject: [BULK] Re: [Greenbuilding] Super Therm Paint
Importance: Low

Yes, if the foil is functioning as an air barrier, that can be enormous.

If the foil is functioning as a radiant barrier (with associated air 
space) that can be big. But these are not the claims that are often 
made. Here's a direct quote from Supertherm's site:

Recently VTEC labs issue an *RE-19.3* insulation factor per coat as the 
ASTM C236 test conducted demonstrated that *SUPERTHERM* blocked * 99.5%*

of the heat proving to be *240%* more efficient than fiberglass BATT 
insulation. *No other R-19 insulator can claim that!*. *No Fiberglass*, 
*No Foam*, *No Cellulose*, *No other single ceramic paint!*
But why stop there?
\
*SUPERTHERM* *Is The Only True RE 28.5 Insulation Paint in this Planet 
(1exterior coat plus one interior coat)
*
Well, that is going to make our building projects a LOT easier. And 
exactly when did this "RE" metric become standardized? Hmmm, maybe I'll 
do a little web search on R-equivalent.. Ah, here's something:

http://www.protek-usa.com/PDF_Files/R%20Value%20Equivalent.pdf

Let's see, protek -- gee, that's the manufacturer of ANOTHER CERAMIC 
PAINT! So it's gotta be true, else how could they be so consistent?

Still, like the conscientious little doobie that I am, I went back to 
their site, searching around for any real evidence that any reputable 
and verifiable testing had been done. None! Just their claims. And 
that's been the way it has been with every other ceramic paint I've 
tried looking into.

I think around the turn of the century (that is, the 19th century) 
congress passed a law forbidding people to petition congress for 
scientific grants (apparently that was done back then) for perpetual 
motion/energy machines. They'd had enough. I'm trying to catch up with 
their wisdom.

OOPS: a web search uncovers that actually they accepted a petition as 
late as 1917, finally dismissing it in 1918, then instituting the ban, 
and finally burning all the related materials to such claims in 1930.

http://www.americanheritage.com/articles/magazine/it/1986/1/1986_1_58.sh
tml

Burned everything! Do I see a conspiracy? Maybe there is such a thing 
after all!

Keith


Nick Pine wrote:
> Keith Winston <keith at earthsunenergy.com>
>
>   
>> ... The whole concept that you can have an R-10 in a paint-thickness
>> layer is ridiculous, IMO: that's better than a pure vacuum.
>>     
>
> A horizontal foil with a large air gap below can lessen downward
> heatflow, esp at low temps. The ASHRAE HOF lists US R8.17
> for an e = 0.05 foil with a 3.5" airspace and a 50 F mean temp and
> a 30 F temp diff and R10.32 at 0 F with a 10 F temp diff. Some
> ice rinks have low-e ceilings. Ceramic paint tests often seem to
> confuse insulation and sun reflection.
>
>   
>> Anything OTHER than anecdotal information would be very welcome.
>>     
>
> I'd like to find a ceiling paint with e < 0.1 that doesn't look like
foil,
> but the higher-e versions below look like scruffy foil...
>
>
http://www.rima.net/pdf_files/Evaluation%20of%20Coatings%20for%20Use%20a
s%20Interior%20Radiation%20Control%20Coatings.pdf
>
> The HOF lists R1.58 for upward heatflow and R1.89 for horizontal
> heatflow and R3.86 for downward heatflow at 50 F with e = 0.2.
>
> I'm
>
>
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>   

-- 
Keith Winston
Earth Sun Energy Systems
Hyattsville, MD 20781
301-980-6325
send me mail at 
keith at the company below
www.EarthSunEnergy.com


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