<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">Kyle:<br><br>Your unmet hours are all in the morning warmup in the cooler months.<br><br>You might try COINCIDENT for Sizing-Option.<br><br>The SS-R unmet hours agree with the "Air Side" HVAC Summary Tab, when you click on the tree Diagram to the left on the Project name. Why the BEPS has a different number is unknown to me.<br><br>I believe others need to take a stab at this..so I reattach your eQuest files for their perusal.<br><br><br><br><br><h5>SIZING-OPTION</h5>
<p class="MsoBodyText">Takes a code-word that specifies whether the system's
SUPPLY-FLOW equals the sum of the zone flows (NON-COINCIDENT) or is based on the
peak block load (COINCIDENT). The reason that NON-COINCIDENT is the default is
due to the reduced lighting power and better window treatment that most
designers use today. If the number of hours with "loads not met" is too high
with SIZING-OPTION = NON-COINCIDENT, you should increase the air-side system
capacity by setting SIZING-RATIO > 1.0. </p>
<p class="CodeWord">NON-COINCIDENT SUPPLY-FLOW is sized using the sum of the
peak loads of the individual zones. (These peaks usually occur at different
times and are, therefore, non-coincident.)</p>
<p class="CodeWord">COINCIDENT SUPPLY-FLOW is sized using the peak
value of the sum of the loads of the zones on the system.</p><br><br><br>--- On <b>Mon, 9/14/09, Nisonger, Kyle M NWK <i><Kyle.M.Nisonger@usace.army.mil></i></b> wrote:<br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"><br>From: Nisonger, Kyle M NWK <Kyle.M.Nisonger@usace.army.mil><br>Subject: Re: [Equest-users] Heating Hours Unmet<br>To: "Jeremy Poling" <jpoling@epsteinglobal.com>, equest-users@lists.onebuilding.org<br>Date: Monday, September 14, 2009, 8:42 AM<br><br><div class="plainMail">I have assigned each zone it's own single zone system, but I still am coming<br>up with about the same number of unmet hours. I can manually adjust the<br>design cfm to lower them, but this seems futile trying to play around with it<br>to get it just right. Shouldn't eQuest automatically size the equip. and<br>cfm's to meet the load? Another question I have is why doesn't the
percent<br>of hours outside of the throttling range on the BEPS report match up with the<br>number of unmet hours on the SS-R report? I have attached my project files<br>if anyone has time to look at them. I appreciate your help.<br><br>Thanks, <br><br><br>Kyle Nisonger<br>Mechanical Engineer, LEED AP<br>US Army Corps of Engineers<br>Kansas City District<br>(816) 389-3224 <br><br>-----Original Message-----<br>From: Jeremy Poling [mailto:<a ymailto="mailto:jpoling@epsteinglobal.com" href="/mc/compose?to=jpoling@epsteinglobal.com">jpoling@epsteinglobal.com</a>] <br>Sent: Sunday, September 13, 2009 11:43 PM<br>To: Nisonger, Kyle M NWK; <a ymailto="mailto:equest-users@lists.onebuilding.org" href="/mc/compose?to=equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>Subject: RE: [Equest-users] Heating Hours Unmet<br><br>Kyle,<br><br> <br><br>Try this first: eQuest expects a single-zone system to serve just that -
a<br>single zone. You'll need to have a separate single zone system created for<br>each zone you need to assign to that system. Once that is done, eQuest will<br>then be able to address the thermostats in each zone adequately and you<br>should see a rather dramatic drop in your unmet heating hours, possibly<br>eliminating them altogether.<br><br> <br><br>After that, if unmet heating hours remain there are a number of other things<br>to look at. Let us know if the above works first.<br><br> <br><br>JEREMY R. POLING, PE, LEED AP<br>Senior Sustainability Analyst<br>Strategic Services<br>Site Solutions | Operations | Sustainability<br><br>EPSTEIN<br><br>Epstein is a firm believer in sustainability. We ask that you please consider<br>the environment before printing this e-mail.<br><br>________________________________<br><br>From: <a ymailto="mailto:equest-users-bounces@lists.onebuilding.org"
href="/mc/compose?to=equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a><br>[mailto:<a ymailto="mailto:equest-users-bounces@lists.onebuilding.org" href="/mc/compose?to=equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>] On Behalf Of Nisonger,<br>Kyle M NWK<br>Sent: Friday, September 11, 2009 4:11 PM<br>To: <a ymailto="mailto:equest-users@lists.onebuilding.org" href="/mc/compose?to=equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>Subject: [Equest-users] Heating Hours Unmet<br><br> <br><br>Equesters, <br><br>I have a packaged single zone system using DX cooling and Furnace heating<br>that serves 7 different zones and is controlled by the corridor zone. This<br>is supposed to replicate "System 3" in ASHRAE 90.1 appendix G. I have many<br>unmet heating hours (including my system control zone). I have let eQuest<br>auto size equipment
capacities and and cfm. I have tried doing everything I<br>can think of to reduce the number of unmet hours. My OA volumes are pretty<br>small and shouldn't be affecting it. I expected possibly a few unmet hours<br>in some of the zones, but not in my control zone, the corridor, and not to<br>this magnitude. I get the following warning message seen below, I'm not<br>sure what it means by "Baseboard-Rating"? Any ideas on what this means or<br>how I could reduce the number of unmet heating hours?<br><br> <br><br> <br>**WARNING********************************************************************<br>** <br> ZONE EL1 Food Storage Zn (G.S2) <br> might have insufficient heating capability. <br> Check that the SYSTEM or ZONE HEATING-CAPACITY plus this
<br> ZONEs BASEBOARD-RATING is adequate to maintain the ZONE <br> specified DESIGN-HEAT-T for the calculated peak ZONE load <br> (see LS-A or LS-B for the ZONE peak load.) <br><br> <br><br>Thanks for your help, <br><br>Kyle Nisonger<br>Mechanical Engineer, LEED(r) AP<br>US Army Corps of Engineers<br>Kansas City District<br>(816) 389-3224 <br><br></div><br>-----Inline Attachment Follows-----<br><br><div class="plainMail">_______________________________________________<br>Equest-users mailing list<br><a href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org" target="_blank">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a><br>To unsubscribe from this mailing list send a blank message to <a ymailto="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG"
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