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<DIV><SPAN class=286082919-15112005><FONT face=Arial color=#0000ff
size=2>G,</FONT></SPAN></DIV>
<DIV><SPAN class=286082919-15112005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=286082919-15112005><FONT face=Arial color=#0000ff size=2>I have
tried both with and w/o the night cycle cooling controls (for all 4 types, i.e
stay-off, cycle on any, etc) before posting this question. But it didn't
work. One good suggestion is to create a schedule
to simulate natural ventilation. I am going to try that idea. Thank you for
the hints. I appreciate it. </FONT></SPAN></DIV>
<DIV><SPAN class=286082919-15112005></SPAN> </DIV>
<DIV><SPAN class=286082919-15112005><FONT face=Arial color=#0000ff size=2>Albert
Sitorus. </FONT></SPAN></DIV>
<DIV><SPAN class=286082919-15112005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=286082919-15112005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=286082919-15112005> </SPAN><FONT face=Tahoma></DIV>
<DIV><FONT size=2><SPAN class=286082919-15112005> </SPAN>-----Original
Message-----<BR><B>From:</B> Graham & Megan
[mailto:hamnmegs@ozemail.com.au]<BR><B>Sent:</B> Tuesday, November 15, 2005
11:06 AM<BR><B>To:</B> bldg-sim@gard.com<BR><B>Subject:</B> [bldg-sim] Out of
Throttle Range.<BR><BR></DIV></FONT></FONT>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV><FONT face=Arial size=2>Also run with and without the night cycle cooling
controls. Equest includes any night ventilative cooling hours as run
hours and thus is likely biasing your hours under-cooled ...</FONT></DIV>
<DIV><FONT face=Arial size=2>G</FONT></DIV>
<DIV>----- Original Message ----- </DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=keirh@bluestoneenergy.com
href="mailto:keirh@bluestoneenergy.com">Keir Howell</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> Wednesday, November 16, 2005 5:39
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>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>
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