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Thu May 8 09:17:00 PDT 2014


which is from the cooling of the outside air. Third, I subtract the
first model's chiller cooling load by the second model's chiller cooling
load to obtain what would be the cooling load taken up by radiant
ceiling cooling panels.=20

=20

In theory, the radiant cooling panels' load would be much larger than
the outside air cooling load. However, my calculations are telling me
that the outdoor air load is larger than the radiant cooling panels'
load. Also, in the second simulation, I have reduced the amount of
supply air by 80% because only outdoor air is being supplied to the
building. Therefore, my fan power consumption should decrease by 80% as
well. My results tell me however that the fans' energy consumption has
only decreased by 10%.

=20

Would anyone know of a reason why my results don't make any sense?? The
majority of my inputs for the two simulations are the same except for
where it is necessary to vary them.=20

=20

Thanks,

=20

Jeremy Plitt

Mechanical Engineer

=20

Setty & Associates, Ltd.

3040 Williams Drive Suite 600

Fairfax, VA 22031-4618

PH: 703-691-2115 Ext. 123

FX: 703-691-8084



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<p class=3DMsoNormal><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'>Hello =
everyone,<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'><o:p> </o:p></span></font></p>=


<p class=3DMsoNormal><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'>I’m attempting to model =
radiant
cooling with eQuest 3-6. You cannot actually model it in eQuest (to my
knowledge) so I’m trying to “trick” the program. =
<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'><o:p> </o:p></span></font></p>=


<p class=3DMsoNormal><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'>First, I’m simulating a VAV =
system
with a chilled water loop for cooling and then obtain the cooling load =
on the
chiller. Second, I simulate a VAV system with only outside air =
ventilation to
meet code. There are exhaust fans in each room to replace the return fan =
which
I removed. From the second simulation I obtain the cooling load on the =
chiller
which is from the cooling of the outside air. Third, I subtract the =
first model’s
chiller cooling load by the second model’s chiller cooling load to =
obtain
what would be the cooling load taken up by radiant ceiling cooling =
panels. <o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'><o:p> </o:p></span></font></p>=


<p class=3DMsoNormal><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'>In theory, the radiant cooling =
panels’
load would be much larger than the outside air cooling load. However, my
calculations are telling me that the outdoor air load is larger than the
radiant cooling panels’ load. Also, in the second simulation, I =
have
reduced the amount of supply air by 80% because only outdoor air is =
being supplied
to the building. Therefore, my fan power consumption should decrease by =
80% as
well. My results tell me however that the fans’ energy consumption =
has
only decreased by 10%.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'><o:p> </o:p></span></font></p>=


<p class=3DMsoNormal><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'>Would anyone know of a reason why =
my
results don’t make any sense?? The majority of my inputs for the =
two
simulations are the same except for where it is necessary to vary them. =
<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'><o:p> </o:p></span></font></p>=


<p class=3DMsoNormal><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'>Thanks,<o:p></o:p></span></font></p=
>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>

<div>

<p class=3DMsoAutoSig><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'>Jeremy =
Plitt<o:p></o:p></span></font></p>

<p class=3DMsoAutoSig><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'>Mechanical =
Engineer<o:p></o:p></span></font></p>

<p class=3DMsoAutoSig><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'><o:p> </o:p></span></font></p>=


<p class=3DMsoAutoSig><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'>Setty & Associates, =
Ltd.<o:p></o:p></span></font></p>

<p class=3DMsoAutoSig><st1:Street w:st=3D"on"><st1:address =
w:st=3D"on"><font size=3D3
  color=3Dnavy face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt;color:navy'>3040
  Williams Drive Suite 600</span></font></st1:address></st1:Street><font
color=3Dnavy><span style=3D'color:navy'><o:p></o:p></span></font></p>

<p class=3DMsoAutoSig><st1:place w:st=3D"on"><st1:City w:st=3D"on"><font =
size=3D3
  color=3Dnavy face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt;color:navy'>Fairfax</span></font></st1:City><fo=
nt
 color=3Dnavy><span style=3D'color:navy'>, <st1:State =
w:st=3D"on">VA</st1:State> <st1:PostalCode
 w:st=3D"on">22031-4618</st1:PostalCode></span></font></st1:place><font
color=3Dnavy><span style=3D'color:navy'><o:p></o:p></span></font></p>

<p class=3DMsoAutoSig><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'>PH: 703-691-2115 Ext. =
123<o:p></o:p></span></font></p>

<p class=3DMsoAutoSig><font size=3D3 color=3Dnavy face=3D"Times New =
Roman"><span
style=3D'font-size:12.0pt;color:navy'>FX: =
703-691-8084<o:p></o:p></span></font></p>

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