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<font size="+1">On your bottom screen adjust the throttling range,
try 2 and 4. .3 is too tight, the system will fight itself.<br>
Bruce Easterbrook<br>
Abode Engineering<br>
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On 13/12/2010 08:52 AM, zhiren zhou wrote:
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<p class="MsoNormal"><span style="font-size: 12pt;" lang="EN-US">Dear
all<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 12pt;" lang="EN-US">
Now I’m doing a LEED-CS energy simulation, part of the
project is residential type and I use system 1(PTAC), and
the proposed is FCU+DOAs. The results shows that the
baseline is consume less energy. <o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent: 21pt;"><span
style="font-size: 12pt;" lang="EN-US">So the question is:
Does PTAC consumes less energy than FCU+DOAs?<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent: 21pt;"><span
style="font-size: 12pt;" lang="EN-US">Of course I’m not sure
whether I has modeled the PTAC correctly. So I put some
important images below. The cooling source is DX and the
heat source is hot water loop. The supply fan is
0.0003Kw/CFM, and I keep the EIR default of 0.438 which is a
low efficiency.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent: 21pt;"><span
lang="EN-US">Could anyone tell me the cause or the mistake
I’ve made? Thanks a lot!<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent: 21pt;"><span
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-indent: 21pt;"><span
lang="EN-US"> Yours Zhiren Zhou<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent: 21pt;"><span
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-indent: 21pt;"><span
lang="EN-US"><img id="图片_x0020_4"
src="cid:part1.02090303.01040505@bellnet.ca" height="618"
width="859"></span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent: 21pt;"><span
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-indent: 21pt;"><span
lang="EN-US"><img id="图片_x0020_2"
src="cid:part2.03070701.08000604@bellnet.ca" height="532"
width="726"></span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent: 21pt;"><span
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-indent: 21pt;"><span
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-indent: 21pt;"><span
lang="EN-US"><img id="图片_x0020_6"
src="cid:part3.00090705.01000105@bellnet.ca" height="535"
width="726"></span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent: 21pt;"><span
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-indent: 21pt;"><span
lang="EN-US"><img id="图片_x0020_3"
src="cid:part4.04010407.03090600@bellnet.ca" height="532"
width="732"></span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent: 21pt;"><span
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-indent: 21pt;"><span
lang="EN-US"><img id="图片_x0020_5"
src="cid:part5.00050309.00090604@bellnet.ca" height="535"
width="720"></span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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