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<font face="Helvetica, Arial, sans-serif">People who have studied
this </font><font face="Helvetica, Arial, sans-serif">(not that
you seem to care about people who study such things) </font><font
face="Helvetica, Arial, sans-serif">are not yet 100% sure of why,
but as I said earlier, the high tempera</font>tures generated at
the heating source kill bacteria in a second of contact time, and
the strong convection loops that form mix the water up and pass it
over the heating source.<br>
<br>
They heat hotwater electrically the same way in Quebec as everywhere
else, using the same products as north America at least. That hydro
Quebec link was just trying to get people to do it differently.<br>
<pre class="moz-signature" cols="0">Dr John Straube, P.Eng.
<a class="moz-txt-link-abbreviated" href="http://www.BuildingScience.com">www.BuildingScience.com</a></pre>
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On 11-12-30 10:54 PM, Nick Pyner wrote:
<blockquote
cite="mid:FHEBJOMKELIMNOKHLJJKOEPHCJAA.npyner@tig.com.au"
type="cite">
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<div><span class="562484303-31122011"><font face="Arial"><font
color="#0000ff"><font size="2"><span
class="406324703-31122011">Sure b</span>eats me. Did
they explain why?</font></font></font></span></div>
<div><font color="#0000ff" face="Arial" size="2"><span
class="562484303-31122011"></span></font> </div>
<div><font color="#0000ff" face="Arial" size="2"><span
class="562484303-31122011">I guess, if they don't <span
class="406324703-31122011">heat stored water from the</span> bottom
of their electric heaters in Quebec, that explains quite a
lot </span></font></div>
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<div> </div>
<br>
<p><font size="2">Nick Pyner<br>
<br>
Dee Why NSW </font></p>
<blockquote dir="ltr" style="MARGIN-RIGHT: 0px">
<div class="OutlookMessageHeader" dir="ltr" align="left"><font
face="Tahoma" size="2">]<b>On Behalf Of </b>Michael O'Brien<br>
<br>
</font></div>
Hi, all--
<div><br>
</div>
<div>Nick, please note that in the Quebec City study, none of
the gas water heaters had Legionella while 33% of the electric
heaters did.</div>
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<div>On Dec 30, 2011, at 6:31 PM, Nick Pyner wrote:</div>
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<div><font size="2"><span class="687152101-31122011"><font
face="Arial"><font color="#0000ff">. That on gas
heaters being kosher at 49C because they heat
the water from the bottom just seems absurd.<span
class="406324703-31122011"> </span></font></font></span></font></div>
<div><font size="2"><span class="687152101-31122011"><font
face="Arial"><font color="#0000ff"><span
class="406324703-31122011"></span></font></font></span></font> </div>
<div><font size="2"><span class="687152101-31122011"><font
face="Arial"><font color="#0000ff"><span
class="406324703-31122011"> </span></font></font></span>Nick
Pyner<br>
<br>
Dee Why NSW </font></div>
<blockquote>
<div class="OutlookMessageHeader" dir="ltr"
align="left"><font face="Tahoma"><font size="2">-----Original
Message-----</font><span lang="EN"><font
size="2">Behalf Of<span
class="406324703-31122011"><font
color="#0000ff" face="Arial"> </font></span>Michael
O'Brien</font></span><br>
<span class="406324703-31122011"><font
color="#0000ff" face="Arial"><font size="2"> ></font><span
lang="EN">
<p><font size="2">--Gas water heaters and
boilers don't harbor Legionella at 120
F/49 C, because of the way they heat
stored water from the bottom.</font></p>
</span><font size="2"> </font></font></span></font></div>
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