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Sealingwax
Joined: 13 Dec 2004
Posts: 21
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 Posted: Mon Dec 13, 2004 7:16 pm Post subject: Windows: Sunlight vs. Insulation |
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How will windows that face to the south of a house affect warmth in the winter? Assuming that the sun is shining brightly, will the added heat generated by the sunlight during the day outweigh the heat loss at night caused by the absence of insulation?
Thanks. |
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RWL
Joined: 10 May 2004
Posts: 399
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| Posted: Tue Dec 14, 2004 6:03 am Post subject: |
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| NO, unless you provide some way of "storing" the daytime heat. This was done when solar heating systems were the fad. |
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Kevin
Site Admin
Joined: 13 Apr 2004
Posts: 1075
Location: Eugene, Oregon
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| Posted: Thu Dec 16, 2004 6:12 pm Post subject: |
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Might depend on the window's own insulating value, location, local climate, inside and outside temperatures, flooring and other materials in path of sun (which may or may not provide storage).
And depending on which room, thermal input during the day could be more valuable than losses at night, when the room might be unoccupied.
So I'd say YES, if you can assemble the right set of surrounding conditions.
(Oh, and by the way, I wouldn't say solar heating is a fad. It's a trend. A slow trend, arguably, non-linear, but getting more important all the time.) |
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svenglezz-ASMEIL
Joined: 18 Nov 2004
Posts: 32
Location: Toronto
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| Posted: Tue Dec 21, 2004 7:42 pm Post subject: Window's....walls....etc... |
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Hello,
Just spend the money and get "trible" glazzzzzzing that's the best thing t'a do...work's great....if not mistaken it's a Standard in some Europe countries? Not sure...would luv t'a know if it is (just makes so much sence).
Considering we in NorthAmerica follow the ASHREA 90.1 standard...and use th'r DOS software for the calc's., triple glass "rules" in the calculations and passing a building....but know one uses it  , guess it's pricy ?
Not to mention adding a "tint" to the glass. and a big factor is what is applied "blinds, drapes etc. etc." this is something that is not "usually" calculated in heat/cool calcs. ( I've always wondered why they don't consentrate more on that, like "thermal-blinds")....esp. during night time when "generaly" not occupied, plus you get the free "air-gap" between the window and the "blind/curtain". Of course you would need t'a put some T-stats and/or light sencors to open/close em' (otherwise moister could build up).
Anywho guess that's enough of my 2 cents'
All the best,
Sven
email: svenglezz @ yahoo.com
web: http://www.intagliocomposites.com/
_________________
ASMEIL Drawings and M&E Designs |
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rabadger
Joined: 22 Feb 2005
Posts: 24
Location: Valparaiso, IN
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| Posted: Tue Feb 22, 2005 5:09 pm Post subject: |
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| No. You get solar gain from the sun but it is like a light switch. Turn your furnace off for 12 hours and see what happens. If you really want to do it right you use zoning dampers in the ducts and more than one thermostat. The thermostat that is in that zone will also keep you covered in the summer when you need cooling because of the solar gain. |
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