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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hello Daniel,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks for your responses to my requests.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo5'><![if !supportLists]><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
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=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>I did find the zone that was under heated in the reports.
This building has three zones and the basement was the under heated zone.
I changed the footprint to one zone per floor in lieu of perimeter/core and dropped
the percentage from 34.1 to 0.9 so I am content with that since this is an
existing system the we can’t change. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-indent:.25in'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>2)
I found the location of the losses tab in the water loop and see how the UA can
be changed so that should solve the pipe insulation savings dilemma. I can’t
fully agree with you regarding the need to insulate steam piping.
Although the pipe does heat the zone it is in the process of condensation in
the piping degrades the quality of the steam reaching the distributors,
radiators in this case. This is a church and the piping to be insulated
is basically 400’ of 4”, 120’ of 2” and 100’ of 1”.
The function of the piping is to deliver good quality steam to the radiators and
without insulation on long runs, even if they are in a heated zone takes away
steam quality from the zone above and the radiators in the zone where the pipe
is located.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks again!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Walt<o:p></o:p></span></font></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'> Daniel Bersohn
[mailto:Daniel.Bersohn@BuroHappold.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, January 21, 2010
6:09 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Walt Henry;
equest-users@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [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 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:l1 level1 lfo2'><![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:l1 level1 lfo2'><![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>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><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'>+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></span></font><o:p></o:p></p>
<div style='margin-top:5.0pt;margin-bottom:5.0pt'>
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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:l2 level1 lfo4'><![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:l2 level1 lfo4'><![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>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p align=center style='text-align:center'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>This message has been scanned by <a
href="http://www.mailcontroller.altohiway.com/">MailController</a>.<o:p></o:p></span></font></p>
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