<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD><TITLE></TITLE>
<META http-equiv=Content-Type content=text/html;charset=ISO-8859-1>
<META content="MSHTML 6.00.2800.1498" name=GENERATOR></HEAD>
<BODY text=#000000 bgColor=#ffffff>
<DIV><FONT face=Arial size=2>The problem is in defining what is average
diversity. Two identical carparks in operation, one with a supply /
exhaust system that is deemed to comply versus a second that has been engineered
to meet the performance requirements of building codes, may have quite different
fan diversity and thus energy use while effectively providing the same service
... Also if it is a carpark for an office building versus retail versus
entertainment precinct the movement of cars will be very different over the day
/ week. Recently I obtained some BMCS status on High Speed/Low Speed/Off
status for some underground carpark exhaust fans for an office / retail
precinct. If my memory serves me correctly I found the fans operated for
800 Full Load Equivalent hours / year. While some of the run hours were at
high speed, most were at low speed where fan energy is 15% or so of High
Speed.</FONT></DIV>
<DIV><FONT face=Arial size=2>Regards,</FONT></DIV>
<DIV><FONT face=Arial size=2>Graham</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=energy.wwind@cox.net href="mailto:energy.wwind@cox.net">JRR</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>Cc:</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, May 10, 2005 2:17 AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [BLDG-SIM] Spam Alert: Carbon
Monoxide Sensors and Parking Garages</DIV>
<DIV><BR></DIV>These fans also remove humidity in some
climates.........<BR>JRR<BR><BR>Chien Si Harriman wrote:<BR>
<BLOCKQUOTE cite=midMDAEMON-F200505061127.AA2737328pd80000716561@gard.com
type="cite">
<META content="MSHTML 6.00.2600.0" name=GENERATOR>
<STYLE></STYLE>
<DIV><FONT face=Arial size=2>Has anyone ever done an energy savings analysis
for an underground parking garage exhaust fan, which utilizes a Carbon
Monoxide sensor to control the on/off switching of the fan? Is it
possible to simply apply an "average diversity factor" to the fan's baseline
operation (ie-as if there were no sensor present)? What is this
fractional multiplier, if it exists, and where did it come
from?</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Chien Si Harriman<BR>Jaros Baum &
Bolles<BR>80 Pine St<BR>NY, NY 10003</FONT></DIV><PRE>======================================================
You received this e-mail because you are subscribed
to the <A class=moz-txt-link-abbreviated href="mailto:BLDG-SIM@GARD.COM">BLDG-SIM@GARD.COM</A> mailing list. To unsubscribe
from this mailing list send a blank message to
<A class=moz-txt-link-abbreviated href="mailto:BLDG-SIM-UNSUBSCRIBE@GARD.COM">BLDG-SIM-UNSUBSCRIBE@GARD.COM</A>
</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></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>