<div dir="ltr">Thanks, Stephen.<br> <br>Very interested in the physics of buoyancy driven flows. <br>The chimney effect of the house in our climate kicks in at night, as soon as it gets cooler outside than inside. Mazria's solar book from the 70's states that you can use about 4" thickness of masonry to participate in a 24 hr solar heating cycle - so that would probably be at the upper limit for a night-time cooling cycle. We manage pretty well without a/c and during heat waves will boost the night time cooling with an exhaust fan.<br><br>Currently have a client in Utah desert with summer temps of 105F and winter 10F. He is blasting his house out of a cave, with a year-round ground temperature of 65F ...............Norbert<br><div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jul 14, 2017 at 4:47 PM, Stephen Collette <span dir="ltr"><<a href="mailto:stephen@yourhealthyhouse.ca" target="_blank">stephen@yourhealthyhouse.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">Norbert and all,<div><br></div><div>I think Norbert that there were also wind catchers on the ground to increase pressure and one on the roof that pushed air down a chimney into the basement to create the pressure to move the cool air up the building and out the top. If I can find some time, I’ll dig it out and share it somehow with everyone.</div><div><br></div><div>Stephen</div><div><br><div>
<div style="color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word"><div><div>Stephen Collette </div><div>BBEC, BBNC, LEED AP, CAHP, BSSO</div><div><b><i>Your Healthy House</i></b> - <font class="m_-5709958580396670933Apple-style-span" size="2"><span class="m_-5709958580396670933Apple-style-span" style="font-size:10px">Indoor Environmental Testing & Building Consulting</span></font></div><div><a href="http://www.yourhealthyhouse.ca" target="_blank">http://www.yourhealthyhouse.ca</a></div><div><a href="mailto:stephen@yourhealthyhouse.ca" target="_blank">stephen@yourhealthyhouse.ca</a></div><div><a href="tel:(705)%20652-5159" value="+17056525159" target="_blank">705.652.5159</a></div></div><div><br></div></div><br class="m_-5709958580396670933Apple-interchange-newline"><br class="m_-5709958580396670933Apple-interchange-newline">
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<br><div><blockquote type="cite"><div>On Jul 14, 2017, at 2:00 PM, <a href="mailto:greenbuilding-request@lists.bioenergylists.org" target="_blank">greenbuilding-request@lists.<wbr>bioenergylists.org</a> wrote:</div><br class="m_-5709958580396670933Apple-interchange-newline"><div><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important">Not familiar with the particular details of that system. However, if there</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important">was a chimney or a tall house was used like a chimney for exhaust, it would</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important">have to be warmer inside the house than outside, in order for the house air</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;float:none;display:inline!important">to have any buoyancy.</span></div></blockquote></div><br></div></div><br>______________________________<wbr>_________________<br>
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