<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML xmlns:o = "urn:schemas-microsoft-com:office:office"><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-7">
<META content="MSHTML 6.00.6000.16525" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>Therefore for summer season heat recovery, if
the climate is hot and humid, total heat recovery with both moisture and
sensible heat recovery can offer a better energy saving.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>What is more complicated for simulation
anaylsis, that total heat exchange effectiveness varies with air conditions
on both sides, but a simplfied average effective can be used with reasonable
accuracy.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>JL Niu</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=BrandonN@Hargis.biz href="mailto:BrandonN@Hargis.biz">Brandon
Nichols</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> Friday, August 31, 2007 5:27
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [BLDG-SIM] ERV (Energy recovery
ventilation) simulation in eQuest</DIV>
<DIV><BR></DIV>
<DIV dir=ltr align=left><SPAN style="FONT-SIZE: 85%"><SPAN
style="COLOR: rgb(153,153,153); FONT-STYLE: italic; FONT-FAMILY: courier new"><SPAN
class=489091821-30082007><FONT face=Arial color=#000000 size=2>Lan, see this
post...</FONT></SPAN></SPAN></SPAN></DIV>
<DIV dir=ltr align=left><SPAN style="FONT-SIZE: 85%"><SPAN
style="COLOR: rgb(153,153,153); FONT-STYLE: italic; FONT-FAMILY: courier new"><SPAN
class=489091821-30082007><FONT face=Arial color=#000000
size=2></FONT></SPAN></SPAN></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN style="FONT-SIZE: 85%"><SPAN
style="COLOR: rgb(153,153,153); FONT-STYLE: italic; FONT-FAMILY: courier new"><SPAN
class=489091821-30082007><A
href="http://elcca-exchange.blogspot.com/2007/04/equest-parametric-sensible-heat.html">http://elcca-exchange.blogspot.com/2007/04/equest-parametric-sensible-heat.html</A></SPAN></SPAN></SPAN></DIV>
<DIV dir=ltr align=left><SPAN style="FONT-SIZE: 85%"><SPAN
style="COLOR: rgb(153,153,153); FONT-STYLE: italic; FONT-FAMILY: courier new"><SPAN
class=489091821-30082007><FONT face=Arial color=#000000
size=2></FONT></SPAN></SPAN></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN style="FONT-SIZE: 85%"><SPAN
style="COLOR: rgb(153,153,153); FONT-STYLE: italic; FONT-FAMILY: courier new"><SPAN
class=489091821-30082007><FONT face=Arial color=#000000 size=2>Here's an
excerpt:</FONT></SPAN></SPAN></SPAN></DIV>
<DIV dir=ltr align=left><SPAN style="FONT-SIZE: 85%"><SPAN
style="COLOR: rgb(153,153,153); FONT-STYLE: italic; FONT-FAMILY: courier new"><SPAN
class=489091821-30082007></SPAN></SPAN></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN style="FONT-SIZE: 85%"><SPAN
style="COLOR: rgb(153,153,153); FONT-STYLE: italic; FONT-FAMILY: courier new">$
FLOAT gives maximum heat recovery but recovers even unwanted heat, so<BR>$ use
th<SPAN class=489091821-30082007>is</SPAN> setting for temperature
control</SPAN><BR><SPAN style="FONT-FAMILY: courier new">ERV-TEMP-CTRL =
MIXED-AIR-RESET</SPAN></SPAN></DIV>
<DIV><FONT face="Courier New" color=#0000ff size=2></FONT> </DIV>
<DIV align=left>
<DIV align=left><FONT face=Arial size=2><SPAN class=489091821-30082007>Also,
the ÄT between exhaust and OSA is typically not great, even if its 110°F
outside and your exhaust/relief is 85°F, the ÄT is only 25°F -- compare
that to even a mild winter condition of 35°F, where the ÄT is double at
equivalent exhaust temperature (i.e 85 - 35 = 50°F).</SPAN></FONT></DIV>
<DIV align=left><FONT face=Arial size=2><SPAN
class=489091821-30082007></SPAN></FONT> </DIV>
<DIV align=left><FONT face=Arial size=2><SPAN
class=489091821-30082007>Regards</SPAN></FONT></DIV>
<DIV align=left><FONT face=Arial size=2><SPAN
class=489091821-30082007></SPAN></FONT> </DIV><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt">
<DIV><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><SPAN
class=212011020-11052004><FONT color=#000000>Brandon Nichols,
PE, LEED<SUP><SPAN style="FONT-SIZE: 8pt">®</SPAN></SUP>
AP</FONT></SPAN></SPAN></DIV>
<DIV><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><SPAN
class=212011020-11052004><FONT
color=#000000>Mechanical</FONT></SPAN></SPAN></DIV>
<DIV><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><FONT
color=#000080><STRONG>HARGIS ENGINEERS</STRONG></FONT></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><FONT
color=#515151>600 Stewart Street</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><FONT
color=#515151>Suite 1000</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><FONT
color=#515151>Seattle, WA 98101<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><FONT
color=#515151>www.hargis.biz<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><FONT
color=#515151> <o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><B><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt">d
|</SPAN></B><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt">
206.436.04<SPAN class=212011020-11052004>0</SPAN>0<SPAN
style="mso-spacerun: yes"> </SPAN><B>c | </B>206.<SPAN
class=212011020-11052004>228.8707</SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><SPAN
class=212011020-11052004></SPAN></SPAN><FONT color=#515151><B><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA">o
|</SPAN></B><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA">
206.448.3376<SPAN style="mso-spacerun: yes"> </SPAN><B>f <SPAN
style="mso-spacerun: yes"> </SPAN>|</B>
206.448.4450</SPAN></FONT></P></SPAN></SPAN>
<DIV> </DIV></DIV>
<DIV> </DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> BLDG-SIM@gard.com
[mailto:BLDG-SIM@gard.com] <B>On Behalf Of </B>Lan Hu<BR><B>Sent:</B>
Thursday, August 30, 2007 1:54 PM<BR><B>To:</B>
BLDG-SIM@gard.com<BR><B>Subject:</B> [BLDG-SIM] ERV (Energy recovery
ventilation) simulation in eQuest<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV>Hi, all,</DIV>
<DIV> </DIV>
<DIV>I have problem simulating ERV in eQUSET. In the program I specified ERV
effectiveness around 72%, the results show 64% energy saving in heating but
just 5% saving in cooling, even when I cut off all the fan tempetrature
increase. Anyone has experience or suggestion?. Thank you very much.</DIV>
<DIV> </DIV>
<DIV>Lan</DIV>
<P>
<HR SIZE=1>
Got a little couch potato? <BR>Check out fun <A
href="http://us.rd.yahoo.com/evt=48248/*http://search.yahoo.com/search?fr=oni_on_mail&p=summer+activities+for+kids&cs=bz">summer
activities for kids.</A><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>