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<p class="MsoNormal"><span style="color:#1F497D">ASHRAE 170 or other AHJ often establish minimum airflow requirements that could be higher than the auto-sized airflow based on thermal loads for some spaces. The baseline will be subject to those requirements
as well.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">LEED reviewers should be familiar, just be sure to document your sources.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">David<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D">David S. Eldridge, Jr., P.E., LEED AP BD+C, BEMP, BEAP, HBDP</span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="color:#244061">Grumman/Butkus Associates</span></b><span style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><b>From:</b> Equest-users [mailto:equest-users-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Steve Jacobs<br>
<b>Sent:</b> Thursday, July 16, 2015 11:38 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] Medical building design flowrates - ASHRAE 170<o:p></o:p></p>
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<p class="MsoNormal">For medical buildings that are governed by ASHRAE 170 the airflow requirements are a bit different. The standard not only mandates minimum OA flowrates but also general airflow rates (often times 6 ACH or higher). This airflow rate is typically
higher than the autosized rates based on a 20F differential. It seems like the baseline should use the required flowrates like the proposed, but has anyone gone through this with a LEED reviewer. Basically it would mean that the minimum flowrate in the VAV
spaces would be 100% resulting in a lot of reheat energy.<o:p></o:p></p>
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<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Steve<o:p></o:p></p>
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