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agreeing with Alan Abrams except no laws are broken, just
transparency or probably the understanding of the proponent. It
just transfers where the heat loss comes from, which energy (or
heating) source, and assumes the window can achieve a temperature
higher than "room temperature", i.e. has enough capacity to meet
that demand. It's incorrect to say the R-value changes, at least an
R to recognized Standards, rather than some notional R that benefits
from an energy input hidden inside the equation so to speak. <br>
<br>
<div class="moz-cite-prefix">On 2014-10-22 06:25 AM, Alan Abrams
wrote:<br>
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cite="mid:CADj3_s6T0hx3eN7EEw5d2y1ADzOtJDDHZACyyd1gUQMyd2Jyog@mail.gmail.com"
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<pre wrap="">seems like the same argument for insulation under a radiant slab would
apply: you would be providing a source of heat adjacent to a heat sink with
an infinite capacity. But I would defer to any physicist who could explain
the mechanics better--that is, how much heat energy is radiated and
conducted back into the room, vs how much is radiated and conducted to the
exterior. I am particularly troubled by the assertions that:
- When the temperature of the glass exceeds the inside air temp by 3-5
dF, the windows become opaque to heat loss
- The R-values of the windows increase and then exceed the R-value of
the walls
On the face of it, it sounds like ArcClad has discovered a way to suspend
some important Laws.
-AA
Alan Abrams
*certified professional building designer, AIBDcertified passive house
consultant, PHIUS*
*certified passive house builder, PHIUS*
cell 202-437-8583
<a class="moz-txt-link-abbreviated" href="mailto:alan@abramsdesignbuild.com">alan@abramsdesignbuild.com</a>
HELICON WORKS *Achitecture and Education*
<a class="moz-txt-link-rfc2396E" href="http://www.heliconworks.com/index2.html"><http://www.heliconworks.com/index2.html></a>
On Tue, Oct 21, 2014 at 3:56 PM, Vadurro, Rob, EMNRD <
<a class="moz-txt-link-abbreviated" href="mailto:rob.vadurro@state.nm.us">rob.vadurro@state.nm.us</a>> wrote:
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<pre wrap=""> Anybody have any experience with electric radiant windows?:
<a class="moz-txt-link-freetext" href="http://radiantwindowtech.blogspot.com/">http://radiantwindowtech.blogspot.com/</a>
Sounds like an energy hog, but maybe not?
Rob Vadurro, AIA
Park Architect
New Mexico State Parks
1220 South Saint Francis Drive
Santa Fe, NM 87505
505-476-3383
505-476-3361 fax
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