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<p class="MsoNormal">All;<o:p></o:p></p>
<p class="MsoNormal">Have a project using a run-around loop to recovery sensible energy from laboratory exhaust fans. I have reviewed the archives and my own memory, but this is leaving me scratching my head. I also recall a recent (maybe?) discussion on Zone
vs System exhaust that may directly feed into this - but cannot find it.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If the lab hood exhaust is put in at the zone level, eQuest won’t do energy recovery on this air-stream, as zone exhaust goes ‘outside’, yes?
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My current thought is to configure the VAV AHU to have either ‘Sensible HX’ or ‘Heat Pipe’ and also have self-contained ERV fans. I’d input the Exhaust fans in as scheduled and then put a low/0 power fan for supply since there really isn’t
such. The OA is moved by the primary supply fan. I’d also calculate a ‘HX power’ or the run-around pump. I’d have 0 zone exhaust; exhaust only at the System level.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Can anyone comment on this approach or advise on how to best approach?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal" style="background:white"><b><span style="font-family:"Arial",sans-serif;color:#383A35;text-transform:uppercase">DARIC R ADAIR</span></b><span style="font-size:7.0pt;font-family:"Arial",sans-serif;color:#383A35;text-transform:uppercase"> PE,
CEM, BEMP </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#383A35"><br>
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