<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:\5B8B\4F53;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"\@\5B8B\4F53";
panose-1:2 1 6 0 3 1 1 1 1 1;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
text-align:justify;
text-justify:inter-ideograph;
font-size:10.5pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"\6279\6CE8\6846\6587\672C Char";
margin:0cm;
margin-bottom:.0001pt;
text-align:justify;
text-justify:inter-ideograph;
font-size:9.0pt;
font-family:"Calibri","sans-serif";}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.Char
{mso-style-name:"\6279\6CE8\6846\6587\672C Char";
mso-style-priority:99;
mso-style-link:\6279\6CE8\6846\6587\672C;}
.MsoChpDefault
{mso-style-type:export-only;}
/* Page Definitions */
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 90.0pt 72.0pt 90.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="2050" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link=blue vlink=purple style='text-justify-trim:punctuation'><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt'>Dear all<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt'> 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:21.0pt'><span lang=EN-US style='font-size:12.0pt'>So the question is: Does PTAC consumes less energy than FCU+DOAs?<o:p></o:p></span></p><p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US style='font-size:12.0pt'>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:21.0pt'><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:21.0pt'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US> Yours Zhiren Zhou<o:p></o:p></span></p><p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US><img width=859 height=618 id="图片_x0020_4" src="cid:image001.png@01CB9B10.1AECA710"></span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US><img width=726 height=532 id="图片_x0020_2" src="cid:image002.png@01CB9B10.1AECA710"></span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US><img width=726 height=535 id="图片_x0020_6" src="cid:image003.png@01CB9B10.1AECA710"></span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US><img width=732 height=532 id="图片_x0020_3" src="cid:image004.png@01CB9B10.1AECA710"></span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US><img width=720 height=535 id="图片_x0020_5" src="cid:image005.png@01CB9B10.1AECA710"></span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>