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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Steven,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> Thanks
for the suggestion. We are indeed looking at heat recovery. I should have
stated in the original post that this is in relation to the base case scenario<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Garamond","serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Garamond","serif";
color:#1F497D'>Eric Allen Youngson<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Garamond","serif";
color:gray'>303.245.8586</span><span style='font-size:9.0pt;font-family:"Garamond","serif";
color:gray'><br>
</span><span style='font-size:11.0pt;font-family:"Garamond","serif";color:#1F497D'><br>
</span><span style='font-size:14.0pt;font-family:"Garamond","serif";color:#1F497D'>Rocky
Mountain Institute </span><span style='font-size:11.0pt;font-family:"Garamond","serif";
color:gray'><br>
</span><span style='font-size:10.0pt;font-family:"Garamond","serif";color:#1F497D'>1820
Folsom Street Boulder, CO 50302</span><span style='font-size:11.0pt;font-family:
"Garamond","serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Garamond","serif";
color:#1F497D'><br>
</span><span style='font-size:10.0pt;font-family:"Garamond","serif";color:#1F497D'>Rocky
Mountain Institute fosters the efficient and restorative use of<br>
resources to make the world secure, just, prosperous, and life-sustaining.</span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Hult, Steven
[mailto:schult@hedev.com] <br>
<b>Sent:</b> Wednesday, December 03, 2008 4:07 PM<br>
<b>To:</b> Eric Youngson<br>
<b>Subject:</b> Heat rejection question from bldg-sim list<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Eric,</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Have
you considered using the waste heat from the coolers to heat water for other
uses?</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>In
any case this company makes several interesting products that use waste heat
from A/C or refrigeration systems to provide free domestic hot water.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>The
Enviro-Pak is for residential or small commercial use. The Enviro-temp is
for larger scale applications.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><a
href="http://www.turbotecproducts.com/news.html">http://www.turbotecproducts.com/news.html</a></span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>(I
wasn’t sure how to respond directly to the list serv…)</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Bldg-Sim,</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>
I am modeling a laboratory with several large walk-in coolers and freezers. I
am interested to hear anyone’s opinion on this modeling strategy as I
have found very little guidance in the literature.</span><o:p></o:p></p>
<p class=MsoNormal style='text-indent:.5in'><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif"'>I am not using the refrigeration version of
eQUEST. I am using the built-in refrigeration tab. I understand, from the help
file, that this model assumes a refrigerated case rather than a walk-in. A
schedule was assigned for the cover with a value of 0 for all hours to
represent a closed case. A dummy value is entered in the Zone load to enable
refrigeration (I believe that this value is negated by the cover) and the case
temperature is specified.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>
I then made sure that all the walls in each of the refrigerated zones is
adiabatic including the external walls (effectively by creating a construction
with a zero U-val). I am now specifying the actual heat rejection of the
equipment (from the designer) in the plenum (where it is actually being
rejected). The heat will be divided between each plenum space weighted by area
to simulate an open return plenum.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Any
advice or comments are greatly appreciated!</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Thx</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Garamond","serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Garamond","serif"'>Eric
Allen Youngson</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Garamond","serif";
color:gray'>303.245.8586</span><span style='font-size:9.0pt;font-family:"Garamond","serif";
color:gray'><br>
</span><span style='font-size:11.0pt;font-family:"Garamond","serif"'><br>
</span><span style='font-size:14.0pt;font-family:"Garamond","serif"'>Rocky
Mountain Institute </span><span style='font-size:11.0pt;font-family:"Garamond","serif";
color:gray'><br>
</span><span style='font-size:10.0pt;font-family:"Garamond","serif"'>1820
Folsom Street Boulder, CO 50302</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Garamond","serif"'><br>
</span><span style='font-size:10.0pt;font-family:"Garamond","serif"'>Rocky
Mountain Institute fosters the efficient and restorative use of<br>
resources to make the world secure, just, prosperous, and life-sustaining.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
</div>
<p><br>
<b><span style='font-size:8.0pt;font-family:"Arial","sans-serif"'>Steven C.
Hult, AIA, LEED® AP</span></b><span style='font-size:8.0pt;font-family:
"Arial","sans-serif"'> | Architecture | Direct:
312.324.7402</span><br>
<span style='font-size:7.5pt;font-family:"Arial","sans-serif";color:gray'>schult@hedev.com</span><o:p></o:p></p>
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