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<p class=MsoNormal><font size=2 color=navy face="Helvetica 55 Roman"><span
style='font-size:10.0pt;font-family:"Helvetica 55 Roman";color:navy'>Walt,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face="Helvetica 55 Roman"><span
style='font-size:10.0pt;font-family:"Helvetica 55 Roman";color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo3'><![if !supportLists]><font
size=2 color=navy face="Helvetica 55 Roman"><span style='font-size:10.0pt;
font-family:"Helvetica 55 Roman";color:navy'><span style='mso-list:Ignore'>1)<font
size=1 face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font size=2 color=navy
face="Helvetica 55 Roman"><span style='font-size:10.0pt;font-family:"Helvetica 55 Roman";
color:navy'>This means that you have a zone that’s not getting heating or
cooling when it wants it. 34.1% probably means there’s an issue
with your system topology or your system really has unmet load hours in real
life. If you have one thermostat and lots of rooms with different
internal loads and exposures you’re guaranteed to get a lot of unmet load
hours. The plant having zero unmet load hours means the plant is satisfying
all the requests its getting from equipment that serves zones. So the
zones aren’t getting what they want from AHUs, radiators, etc. but the
plant is doing everything AHUs, radiators etc. want it to.<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo3'><![if !supportLists]><font
size=2 color=navy face="Helvetica 55 Roman"><span style='font-size:10.0pt;
font-family:"Helvetica 55 Roman";color:navy'><span style='mso-list:Ignore'>2)<font
size=1 face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font size=2 color=navy
face="Helvetica 55 Roman"><span style='font-size:10.0pt;font-family:"Helvetica 55 Roman";
color:navy'>Any piping downstream of a steam control valve in a two-pipe system
in the same space served by the radiator doesn’t need insulation because it’s
acting as a radiator. In a one-pipe system,0 if you have TRVs on the air
vents, any pipe that only serves one radiator and is in the same space as that
radiator need not be insulated since it serves as a radiator. If you don’t
have TRVs on your air vents in a one pipe system (or in place of the control
valves on two-pipe for that matter) the insulation probably doesn’t
matter that much since all the radiators deliver heat (and too much of it at
that) at the same time as all the uninsulated pipe. For the remaining
pipe you’d estimate the surface area of the piping to be insulated and
multiply the U factor of the insulation by the surface area of the pipe.
Put that into the hot water loop you’re using as an analog for your steam
system in detailed mode. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face="Helvetica 55 Roman"><span
style='font-size:10.0pt;font-family:"Helvetica 55 Roman";color:navy'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><font
size=2 color=black face="Helvetica 55 Roman"><span lang=EN-GB style='font-size:
10.0pt;font-family:"Helvetica 55 Roman";color:black;font-weight:bold'>Daniel
Bersohn, LEED AP<br>
</span></font></b><font size=2 color=black face="Helvetica 55 Roman"><span
lang=EN-GB style='font-size:10.0pt;font-family:"Helvetica 55 Roman";color:black'>Mechanical
Engineer<br>
Buro Happold Consulting Engineers PC<br>
100 Broadway<br>
<st1:place w:st="on"><st1:City w:st="on">New York</st1:City>, <st1:State w:st="on">NY</st1:State>
<st1:PostalCode w:st="on">10005</st1:PostalCode> <st1:country-region w:st="on">USA</st1:country-region></st1:place><o:p></o:p></span></font></p>
</div>
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size=2 color=black face="Helvetica 55 Roman"><span lang=EN-GB style='font-size:
10.0pt;font-family:"Helvetica 55 Roman";color:black'>+1 212 334 2025 Office<br>
+1 212 616 0391 Desk<br>
<br>
daniel.bersohn@burohappold.com<br>
</span></font><font size=2 color=navy face="Helvetica 55 Roman"><span
lang=EN-GB style='font-size:10.0pt;font-family:"Helvetica 55 Roman";color:navy'><a
href="http://www.burohappold.com/" title="http://www.burohappold.com/">www.burohappold.com</a><br>
</span></font><font color=navy face=Arial><span lang=EN-GB style='font-family:
Arial;color:navy'><br>
</span></font><o:p></o:p></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Walt Henry
[mailto:WHenry@thielsch.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, January 21, 2010
8:55 AM<br>
<b><span style='font-weight:bold'>To:</span></b>
equest-users@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Equest-users] <st1:place
w:st="on"><st1:PlaceName w:st="on">Throttling</st1:PlaceName> <st1:PlaceType
w:st="on">Range</st1:PlaceType></st1:place> and Pipe Insulation</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Good morning eQUEST users,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have two requests:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo2'><![if !supportLists]><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><span
style='mso-list:Ignore'>1)<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font><![endif]><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>What is the
definition of “throttling range”? I have always had 0 until
my last project which is a Police Station. We do mostly energy retrofits
and the existing boiler, 37 years old, has an input of 450 MBH. The total
HVAC load is 222.651 MBH per eQUEST. For the first time Report BEPU shows
my base case model to be 34.1% outside of the throttling range. What does
this mean? The % of hours any plant load is not satisfied is 0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo2'><![if !supportLists]><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><span
style='mso-list:Ignore'>2)<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font><![endif]><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>I have a church
to model, starting this morning, which has no insulation on the steam piping
and we want to determine the savings by putting 1” of
fiberglass
on the pipes. Usually we would determine the savings in e-plus but is
there any way to model this in eQUEST? There are other measures and it
would be convenient to have everything in one report.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Walt Henry<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Energy Specialist<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>RISE Engineering<o:p></o:p></span></font></p>
<p class=MsoNormal><st1:Street w:st="on"><st1:address w:st="on"><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>1341 Elmwood Ave.</span></font></st1:address></st1:Street><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>Cranston</span></font></st1:City><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>, <st1:State
w:st="on">RI</st1:State> <st1:PostalCode w:st="on">02910</st1:PostalCode></span></font></st1:place><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><st1:place w:st="on"><st1:country-region w:st="on"><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>U.S.A.</span></font></st1:country-region></st1:place><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Phone: 401-784-3700 Ext. 119<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Fax:
401-784-3710 <o:p></o:p></span></font></p>
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