<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=ISO-8859-1">
<META content="MSHTML 6.00.2800.1522" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>If the apartment units have no cooling, then you
shouldn't experience any hours outside of the throttling range because there
will be no cooling setpoint. Make sure that the cooling temperature
schedule (COOL-TEMP-SCH) for all zones on the second and third floors are
undefined.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Keir Howell<BR>Bluestone Energy Services,
Ltd.<BR>phone: 781-356-8865<BR>fax:
781-356-8864</FONT></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=asitorus@glumac.com href="mailto:asitorus@glumac.com">Albert
Sitorus</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=bldg-sim@gard.com
href="mailto:bldg-sim@gard.com">bldg-sim@gard.com</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, November 15, 2005 11:51
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [bldg-sim] Out of Throttle
Range.</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2><SPAN class=598395115-15112005>Hello
everybody,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=598395115-15112005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=598395115-15112005>I am modeling
a 3-story building mixed-used LEED building. The first floor is used as
classrooms and retails. The 2nd and 3rd floors are used for residential units.
Most of the systems on the first floor are air-cooled condensing
unit with electric heat-pump heating, and the rest are exhaust fan
systems. For the 2nd and 3rd floors, the apartment units use
unit heaters without any cooling. Corridors on these floors
are served by make-up air units with gas-fired heating. There is not any
warning or error when I simulate the model. </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=598395115-15112005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=598395115-15112005>The problem is
that I can't reduce the "percent of hours any system zone outside of
throttling range" to an acceptable value. I have
tried adjusting air flow, throttling range, etc w/o achieving the desired
results. I looked at SS-O report and the problem is there are too
many hours when the cooling isn't satisfied for 2nd and 3rd
floor. In other words, for all zones on 2nd and 3rd floors there are
many hours when the units are over 80 - 85F or even above
85F. I also tweaked the fans night control cycle, infiltration schedule,
set-point temperature, and zone entering max supple temp but the out of
throttling range is still exceptionally high. </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=598395115-15112005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=598395115-15112005>I have no
idea how to fix this error. Without cooling in these units, should I not
expect such large out of throttling range issues? Has anyone encountered this
kind of problem before? Can anyone share their experience or
solution? Has anyone done LEED model w/o cooling? I would
appreciate any response, idea or hints that would help solve this
problem. I have described the problem as clear as I can but I am
sure there are things that I may have left out, please don't hesitate to
ask me. Again, I am trying to get some ideas, hints or methods so I will
provide as much info as anyone want in order to help me solve
this.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=598395115-15112005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=598395115-15112005>Thank you very
much in advance for your help. I appreciate any help, hints or
suggestions. Thank you again. </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=598395115-15112005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=598395115-15112005>Sincerely, </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=598395115-15112005></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=598395115-15112005>Albert Sitorus. </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=598395115-15112005></SPAN></FONT> </DIV><FONT face=Arial
size=2></FONT><FONT face=Arial size=2></FONT><FONT face=Arial size=2></FONT>
<DIV><FONT face=Arial size=2></FONT><FONT face=Arial size=2></FONT><FONT
face=Arial size=2></FONT><BR><BR><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN><STRONG>Albert T.
Sitorus</STRONG><BR><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT
face="Times New Roman" size=3>Energy Analyst</FONT></SPAN></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT><BR><A href="http://www.glumac.com/"><IMG
src="http://www.glumac.com/glumacsig.gif" border=0></A> </DIV>
<DIV>
<HR style="WIDTH: 330px; HEIGHT: 2px" align=left width=330 color=#9acb33
noShade SIZE=2>
</DIV>
<DIV></DIV><SPAN
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt">320 SW
Washington, Suite 200</SPAN><BR><SPAN
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt">Portland,
OR 97204-2640</SPAN><BR><SPAN
style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt">T.
503.227.5280<SPAN style="mso-spacerun: yes"> </SPAN>F.
503.274.7674<BR><BR><STRONG><SPAN
style="FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: Arial">Thinking. Inside
the building.</SPAN></STRONG><BR><STRONG><SPAN
style="FONT-WEIGHT: normal; FONT-SIZE: 10pt; COLOR: #333333; FONT-FAMILY: Arial"><A
href="http://www.glumac.com/">www.glumac.com</A></SPAN></STRONG></SPAN>
<DIV> </DIV><PRE>
======================================================
You received this e-mail because you are subscribed
to the BLDG-SIM@GARD.COM mailing list. To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE@GARD.COM
</PRE></BLOCKQUOTE><PRE>
===========================
You received this e-mail because you are subscribed
to the BLDG-SIM@GARD.COM mailing list. To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE@GARD.COM
</PRE></BODY></HTML>