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Reflected Heat (and light) question - Page 2

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Posted by Nick Pine on September 24, 2003, 10:46 am

You might talk with the Atlas Energy Shield roofing people. As I recall,
one of their engineers told me their 1" polyiso board has no problems up
to 350 F, and only cosmetic problems (a little foil wrinkling?) up to 450.
When I asked about outgassing in a fire, he said it's no worse than wood.


Posted by rob on September 25, 2003, 7:46 pm
Hey David

THANK YOU....Our solar WATER heater destroyed the foam\foil stuff...we
were getting 175F air temps.... I was on a job site 6 or 8 weeks ago
and mention this to a HVAC guy and he reccommended fiber paneled foil
stuff for ducts...told him I would be looking for some next spring
when we planned to repair water heater...

Read your posting and got some from him today...he tells me it is good
for     360F and will not give of "resin" like fiberglass pink
stuff....we will seal well anyway.....Glazing is going to be installed
this weekend so I glad we caught this ;\

Thanks again...love this internet thing..hehehe


ddelaney@sympatico.ca (David Delaney) wrote in message

Posted by Bert Menkveld on September 18, 2003, 11:19 am
Of course, if you're standing near the reflector with direct sunlight
shining on you AND refelected light shining on you from the other side, you
will certainly feel a lot warmer than when you're just standing in the

Bert Menkveld

Posted by rob on September 18, 2003, 11:37 pm
Hey Bert

This is obvious....heat from reflected side was however more intense
and the illumination from reflected side was likwise much brighter...

with some disscussion with Duane (who by the way has an AWESOME web
site)I think we concluded that diffusion accounted for increaded
brightness and possibly the flat collecter has slight curve which will
concentrate heat...


Posted by Jack on September 18, 2003, 11:19 pm
 it may be the case, that you sense accumulated thermal energy +
reflected light/heat together
what is a temperature of your furnace filter material, aluminium
reflector ?

The same you sense inside of your car when sun shines - accumulated heat

rob wrote:

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