<span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><The 'time to heat' a high mass house can be an order of magnitude longer than a light house, and its return to ambient is similarly long.></span><div>
<span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><br></span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">to what extent is that a factor, assuming more or less continuous occupancy and forced air heating? if it were a troublesome issue, it would be a disincentive for moody climates.</span></div>
<div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><br></span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">but the subtext of all this is whether an AAC wall is sufficient on its own, as its proponent put forth. my position was simply that in a 4000-5000 HDD climate, with long periods of low temps and no sunshine, additional exterior insulation is advised. </span></div>
<div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><br></span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">nder such extreme circumstances, peak load would still be a function of "steady state" R-values, even though it might take hours or even a day to reach that point. the lag provided by the thermal mass might reduce annual demand; then again, this "time to heat" might actually increase annual demand.</span></div>
<div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><br></span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">-aa </span><br clear="all">
<div><font><font><span style="color:rgb(102,0,0)"><br></span></font></font></div><div><font><font><span style="color:rgb(102,0,0)"><br></span></font></font></div><div><font><font><span style="color:rgb(102,0,0)">Alan Abrams</span></font><b style="color:rgb(102,0,0)"><br>
</b><i><span style="color:rgb(102,102,102)">certified professional building designer, AIBD<br>certified passive house consultant, PHIUS</span></i></font><div><i><span style="color:rgb(102,102,102)">certified passive house builder, PHIUS</span></i><font><span style="color:rgb(102,0,0)"><font color="#666666"><i><br>
</i></font></span><font><span style="color:rgb(102,0,0)">Abrams Design Build LLC</span></font><font size="4"><br style="color:rgb(102,0,0)"><font><i style="color:rgb(102,0,0)">sustainable design for <font>intentional</font> living</i></font></font></font><br style="color:rgb(102,0,0)">
<font style="color:rgb(102,0,0)" size="1"><font><span style="color:rgb(102,102,102)">6411 Orchard Avenue Suite 102</span><br style="color:rgb(102,102,102)"><span style="color:rgb(102,102,102)">Takoma Park, MD 20912</span><br style="color:rgb(102,102,102)">
<span style="color:rgb(102,102,102)">office </span></font></font><font style="color:rgb(102,102,102)" size="1"><font>301-270-NET- ZERO (301-270-6380) <br></font></font><font style="color:rgb(102,102,102)" size="1"><font>fax </font></font><font style="color:rgb(102,102,102)" size="1"><font>301-270-1466 <br>
</font></font><font style="color:rgb(102,102,102)" size="1"><font>cell </font></font><font style="color:rgb(102,102,102)" size="1"><font>202-437-8583</font></font><font style="color:rgb(102,102,102)" size="1"><font><br>
<a style="color:rgb(102,102,102)" href="mailto:alan@abramsdesignbuild.com" target="_blank">alan@abramsdesignbuild.com</a><br style="color:rgb(102,102,102)">
<a style="color:rgb(102,102,102)" href="http://www.abramsdesignbuild.com/" target="_blank">www.abramsdesignbuild.com</a></font></font><br></div></div>
<br></div>