<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">The OBC has a nice list of HDD. Oh, and Rob was quoting HDD in Fahrenheit not Celsius. I think Ottawa is 5000 HDD.<div><br><div><div>On 2011-03-01, at 9:22 AM, John O'Brien wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">Rob,<div><br></div><div>Mind if I ask where you get your HDD stats? <a href="http://ottawa.weatherstats.ca/charts/hdd-1year.html">http://ottawa.weatherstats.ca/charts/hdd-1year.html</a> shows the last year as having approx 3600 HDD. </div>
<div><br></div><div>I've been trying to find a solid number for the area as we plan on building over in Chelsea at the foot of the Gatineau hills soon.</div><div><br></div><div>J<br><br><div class="gmail_quote">On Tue, Mar 1, 2011 at 1:32 AM, RT <span dir="ltr"><<a href="mailto:ArchiLogic@yahoo.ca">ArchiLogic@yahoo.ca</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="im">On Mon, 28 Feb 2011 21:33:29 -0500, kenn brown <<a href="mailto:kenn2536@centurylink.net" target="_blank">kenn2536@centurylink.net</a>> wrote:<br>
<br>
<br>
</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">
In the winter our floor is cold, south glass wall in three rooms. Summer<br></div>
warm or hot. Climate Austin TX which is tropical to some of you.<br>
</blockquote>
<br>
<br>
<br>
In winter, our insulated floor slab (and living space) is warm. In summer it's cool.<br>
<br>
No auxiliary heating in winter until late at night, if at all. No mechanical cooling in summer except for maybe 3 or 4 evenings during the Dog Days of summer.<br>
<br>
Slab is exposed to direct gain in winter via equator-facing glass (no more than ~15% of floor area) and completely shaded from summer sun by appropriately-scaled overhangs. Super-insulated/air-tight construction.<br>
<br>
Climate: ~8750 HDD/yr, which is frigid to some of you (but balmy to guys like Gordon in Edmonton Alberta)<br>
<br>
Moral of the story ? God and the Devil are in the details.<br><font color="#888888">
<br>
-- <br>
=== * ===<br>
Rob Tom<br>
Kanata, Ontario, Canada<br>
< A r c h i L o g i c at Y a h o o dot c a ><br>
manually winnow the chaff from my edress if you hit "reply"<br></font><div class="hm">
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