<div dir="ltr">Hi Daric,<div><br></div><div>I've struggled with this issue a lot too when I first started modeling; what do you mean floor multipliers don't also apply to the HVAC systems?!</div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span style="font-family:Calibri,sans-serif;font-size:11pt">is this behavior correct with other’s experience?</span></blockquote><div>Correct me if I'm wrong, but I believe HVAC system capacities should be reflective of all respective zones <b>including </b>multipliers, rather than of a single zone with no multipliers. For example, 30000 BTU/H should be entered for the cooling capacity of an HVAC system with a zone of floor multiplier 3, rather than 10000 BTU/H for the same zone. </div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span style="font-size:11pt;font-family:Calibri,sans-serif">There is no means within eQuest to specify a Systems multiplier?</span></blockquote><div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"></blockquote></div><div>I don't think there is a way to specify an HVAC system multiplier in eQuest. </div><div><br></div><div>Hope this helps,</div><div>Calvin</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Aug 27, 2019 at 3:47 PM Daric Adair via Equest-users <<a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<div class="gmail-m_7407146328492681379gmail-m_2879944806857593366WordSection1">
<p class="MsoNormal">Fellow eQuesters;<u></u><u></u></p>
<p class="MsoNormal">Am running into some confusion on the use of multipliers; and how the do/don’t appear to cascade out to HVAC Systems. If I create a 10 story building in the DD Wizard with ‘use multipliers’ checked and ‘HVAC System per Level’, this creates
a building with the area of the 10 story building, on 3 floors, with 3 HVAC systems. Granted the middle floor has a floor multiplier of 8, which is linked to the spaces and zones – but not the systems. Thus, it is really 3 AHU’s – top, bottom, and a much larger
AHU for the middle floor(s). <u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I have been unable to find anything in the documentation that say ‘oh, by the way, this is floor multipliers don’t multiple HVAC Systems’ or ‘Don’t use this if you really do have multiple HVAC system.” Which is both odd, but unsurprising
all at the same time.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">This approach could impact model performance, especially if performance curves do not scale in a multiplier fashion or if one is unaware of this behavior and looks up incorrect efficiencies based on the ‘multiplied’ unit’s capacity. It
also impacts reporting to LEED/Code if they see 3 systems (from my example) and not the 10 AHU’s/RTU’s scheduled.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Question is two part:<u></u><u></u></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="gmail-m_7407146328492681379gmail-m_2879944806857593366MsoListParagraph" style="margin-left:0in">is this behavior correct with other’s experience?<u></u><u></u></li><li class="gmail-m_7407146328492681379gmail-m_2879944806857593366MsoListParagraph" style="margin-left:0in">There is no means within eQuest to specify a Systems multiplier?<u></u><u></u></li></ol>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I see where multipliers <i>could</i> be used, but that isn’t my applciation here.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Thanks,<u></u><u></u></p>
<p class="MsoNormal" style="background:white"><b><span style="font-family:Arial,sans-serif;color:rgb(56,58,53);text-transform:uppercase">DARIC R ADAIR</span></b><span style="font-size:7pt;font-family:Arial,sans-serif;color:rgb(56,58,53);text-transform:uppercase"> PE,
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail-m_7407146328492681379gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div style="margin:0px;padding:0px;color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px"><strong>Calvin Chu, MFBA, EIT</strong></div><div style="margin:0px;padding:0px;color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px"><strong><img src="https://gallery.mailchimp.com/d101420356ef55b3aa59b2649/images/65238160-e3eb-43fd-b6dd-674587223aa6.png"></strong></div><div style="margin:0px;padding:0px;color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px">Energy Modeler</div><div style="margin:0px;padding:0px;color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px"><div style="margin:0px;padding:0px"><div style="margin:0px;padding:0px"><span style="color:rgb(102,102,102)">646-780-5536</span><span style="color:rgb(102,102,102)"> | <a href="mailto:cchu@brightpower.com" target="_blank">cchu@brightpower.com</a></span></div><div style="margin:0px;padding:0px"><a href="http://www.brightpower.com/?utm_source=email&utm_medium=signature" rel="nofollow" style="color:rgb(53,114,176)" target="_blank">www.brightpower.com</a></div><div style="margin:0px;padding:0px">11 Hanover Square, 21st Floor </div><div style="margin:0px;padding:0px">New York, NY 10005</div></div></div></div></div></div></div></div></div></div></div>