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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi Aaron,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>you could refer to G3.1.1 Exceptions a “ use additional system
types for non-predominant conditions, if those conditions apply to more than
1900 sqm of conditioned floor area. It is not conflict. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>For you case, could the hospital floors can be considered
as residential area? you should check it.<o:p></o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<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"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Aaron<br>
<b>Sent:</b> 2012</span><span lang=ZH-CN style='font-size:10.0pt'>年</span><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>4</span><span
lang=ZH-CN style='font-size:10.0pt'>月</span><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'>17</span><span lang=ZH-CN style='font-size:
10.0pt'>日</span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
11:35<br>
<b>To:</b> equest-users<br>
<b>Subject:</b> [Equest-users] How to decied HVAC system type(with picture)<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Dear all<o:p></o:p></p>
<div>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:black'> I find contradiction between ASHRAE90.1-2007
Standard and ASHRAE 90.1-2007 User's Manual when deciding the baseline's HVAC
system. Table G3.1.1A in Appendix G is used to decide the baseline HVAC as
shown below<br>
<img width=32 height=32 id="_x0000_i1025"
src="cid:image001.png@01CD1CAE.51567440"><img width=793 height=312
id="图片_x0020_5" src="cid:image002.jpg@01CD1CAE.51567440"><br>
The note under the table which i have underline say
"Where attributes make a building eligible for more than one baseline
system type, use the predominant condition to determine the system type for the
entire building." It seems that only one HVAC system will be used in
baseline.<br>
However, in ASHRAE 90.1-2007 User's Manual , there is no
explaination about the note. While the Case Study in Page G-37 of User's Manual
tell us that two different types of HVAC system should be usedrespectively<span
class=def> for</span>the Residential part and office part as shown below.<b>So
I think this conflict with the ASHRAE90.1-2007 StandardTable G3.1.1A</b>.<br>
</span><b><span style='font-size:15.0pt;color:blue'> what about
your views?</span></b><span style='color:black'><br>
<img width=32 height=32 id="_x0000_i1026"
src="cid:image001.png@01CD1CAE.51567440"><img width=283 height=391
id="图片_x0020_10" src="cid:image003.jpg@01CD1CAE.51567440"><br>
If a hospital building includes mainly wards in 3~7 floors
with an area of 132000ft2 and therapy zone in 1~2 floors with an area of
52000ft2, the proposed building is FCU served by chiller and boiler, I
tend to the PTAC system (system 1) for 3~7 floors and system 5 for 1~2
floors. what about your opinion?<br>
Thank you for any comments and directions.<br>
<br>
Aaron<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:black'> <o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:black'> <o:p></o:p></span></p>
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