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<p class=MsoNormal><span style='font-size:10.5pt'>I am trying to model an art
gallery with underfloor air supply, and have specified return air plenums above
each of the gallery spaces.  However, I am now having problems with energy
recovery at the AHUs.  I get warnings that there is no central exhaust
flow, as well as condensation and frost forming on the coils.  Is there
something else I need to specify for eQuest to recognize the return air from
the plenums?<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:10.5pt'><o:p> </o:p></span></p>

<p class=MsoNormal><span style='font-size:10.5pt'>thanks,<o:p></o:p></span></p>

<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Lizzie Davies</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Graduate
Engineer</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Arup</span>
<br>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>13 Fitzroy St</span>
<br>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>London W1T 4BQ</span>
<br>
<b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Tel:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> +44 (0) 20 7755 5729</span>
<br>
<b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Fax:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> +44 (0) 20 7755 3743</span>
<br>
<b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Web:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> www.arup.com</span> <o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

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<pre>____________________________________________________________
Electronic mail messages entering and leaving Arup  business
systems are scanned for acceptability of content and viruses
</pre></body>

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