<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:arial, helvetica, sans-serif;font-size:10pt"><DIV>To eQuest users,<BR><BR>Only EIR is required for the chiller efficiency input.<BR>This can be converted easily to COP from which most of the manufacturers specify this on their cut sheets/catalogues to get the EIR.<BR>Questions are:<BR><BR>1. What is this COP/EIR input in eQuest?<BR> Is this for Full Load or Partial Load?<BR><BR>2. Does anybody know how to convert the ASHRAE Chiller's ARI Condition listed in ASHRAE 90.1 to our weather condition here in Dubai?<BR>Or is there a formula in converting the ARI Condition to the local weather where the project will be built?<BR><BR>Any related help from their own experience will be helpful.<BR>Thanks in advance<BR><BR><BR>Reniel<BR><BR></DIV>
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<B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> "equest-users-request@lists.onebuilding.org" <equest-users-request@lists.onebuilding.org><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> equest-users@lists.onebuilding.org<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Wednesday, February 10, 2010 23:16:38<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Equest-users Digest, Vol 23, Issue 16<BR></FONT><BR>Send Equest-users mailing list submissions to<BR> <A href="mailto:equest-users@lists.onebuilding.org" ymailto="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</A><BR><BR>To subscribe or unsubscribe via the World Wide Web, visit<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><BR>or, via email, send a message with subject or body
'help' to<BR> <A href="mailto:equest-users-request@lists.onebuilding.org" ymailto="mailto:equest-users-request@lists.onebuilding.org">equest-users-request@lists.onebuilding.org</A><BR><BR>You can reach the person managing the list at<BR> <A href="mailto:equest-users-owner@lists.onebuilding.org" ymailto="mailto:equest-users-owner@lists.onebuilding.org">equest-users-owner@lists.onebuilding.org</A><BR><BR>When replying, please edit your Subject line so it is more specific<BR>than "Re: Contents of Equest-users digest..."<BR><BR><BR>Today's Topics:<BR><BR> 1. Re: Circulation Loop Warnings (Shaun Martin)<BR> 2. Re: Hrs exceeding throttling range on T24 baseline<BR> (Sundharam, Premnath)<BR><BR><BR>----------------------------------------------------------------------<BR><BR>Message: 1<BR>Date: Wed, 10 Feb 2010 09:14:30 -0800<BR>From: "Shaun Martin" <<A
href="mailto:smartin@shaunmartinconsulting.com" ymailto="mailto:smartin@shaunmartinconsulting.com">smartin@shaunmartinconsulting.com</A>><BR>To: "'Katie Tuttle'" <<A href="mailto:Katie.Tuttle@hei-eng.com" ymailto="mailto:Katie.Tuttle@hei-eng.com">Katie.Tuttle@hei-eng.com</A>>,<BR> <<A href="mailto:equest-users@lists.onebuilding.org" ymailto="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</A>><BR>Subject: Re: [Equest-users] Circulation Loop Warnings<BR>Message-ID: <CF0A26C4519A450CADAF753921C1BBA9@Shaun><BR>Content-Type: text/plain; charset="us-ascii"<BR><BR>The CURINV warnings you see are mostly related to pumps. What equest does<BR>with its pump and loop calculations is a mystery and a bit of a joke (I<BR>frequently see autosized flow rates 5 to 10 times the design). Chances are,<BR>if you specify kW, flow and head together, you'll end up seeing the errors<BR>you are
getting here. Start with just the pump kW. Add head if eQuest<BR>complains. You'll have to enter the head that the program calculates or,<BR>again, you'll get more warnings.<BR><BR>Shaun Martin LEED AP<BR>Principal<BR>Shaun Martin Consulting<BR>Suite 200 - 420 West Hastings Street<BR>Vancouver, BC V6B 1L1<BR><BR>c: 604-789-1095<BR><BR>e:<A href="mailto:smartin@shaunmartinconsulting.com" ymailto="mailto:smartin@shaunmartinconsulting.com">smartin@shaunmartinconsulting.com</A><BR><BR><BR><BR><BR> _____ <BR><BR>From: <A href="mailto:equest-users-bounces@lists.onebuilding.org" ymailto="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</A><BR>[mailto:<A href="mailto:equest-users-bounces@lists.onebuilding.org" ymailto="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</A>] On Behalf Of Katie<BR>Tuttle<BR>Sent: Wednesday, February 10, 2010
7:29 AM<BR>To: <A href="mailto:equest-users@lists.onebuilding.org" ymailto="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</A><BR>Subject: [Equest-users] Circulation Loop Warnings<BR><BR><BR><BR>Has anyone been able to resolve warnings that occur with circulation loops?<BR>Please see attached for simulation warnings.<BR><BR><BR><BR>Thanks,<BR><BR>Katie <BR><BR>This email and any files transmitted with it are confidential and<BR><BR>are intended solely for the use of the individual or entity to whom<BR><BR>they are addressed. This communication represents the originator's<BR><BR>personal views and opinions, which do not necessarily reflect those of<BR><BR>Henderson Engineers, Inc. If you are not the original recipient or the<BR><BR>person responsible for delivering the email to the intended recipient,<BR><BR>be advised that you have received this email in error, and that any use,<BR><BR>dissemination,
forwarding, printing, or copying of this email is strictly<BR><BR>prohibited. If you received this email in error, please immediately<BR><BR>notify <A href="mailto:administrator@hei-eng.com" ymailto="mailto:administrator@hei-eng.com">administrator@hei-eng.com</A>.<BR><BR><BR><BR><BR><BR><BR><BR><BR><BR><BR>-------------- next part --------------<BR>An HTML attachment was scrubbed...<BR>URL: <<A href="http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20100210/ef46b233/attachment-0001.htm" target=_blank>http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20100210/ef46b233/attachment-0001.htm</A>><BR><BR>------------------------------<BR><BR>Message: 2<BR>Date: Wed, 10 Feb 2010 13:16:00 -0600<BR>From: "Sundharam, Premnath" <<A href="mailto:psundharam@DLRGROUP.com" ymailto="mailto:psundharam@DLRGROUP.com">psundharam@DLRGROUP.com</A>><BR>To: "Hwakong Cheng" <<A
href="mailto:hwakong@hotmail.com" ymailto="mailto:hwakong@hotmail.com">hwakong@hotmail.com</A>>,<BR> <<A href="mailto:equest-users@lists.onebuilding.org" ymailto="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</A>><BR>Subject: Re: [Equest-users] Hrs exceeding throttling range on T24<BR> baseline<BR>Message-ID:<BR> <<A href="mailto:175AB2D86809FE429E67032E0D05DC59010147FD@dlremail.dlrgroup.com" ymailto="mailto:175AB2D86809FE429E67032E0D05DC59010147FD@dlremail.dlrgroup.com">175AB2D86809FE429E67032E0D05DC59010147FD@dlremail.dlrgroup.com</A>><BR>Content-Type: text/plain; charset="us-ascii"<BR><BR>Hey Hwakong,<BR><BR>Thanks for the response.... I realized the hard way that the capacities<BR>doesn't matter.... <BR><BR>Our system does not have any preheat or reheat coils. The proposed is a<BR>SZRH that is connected to CHW and HW Loop (This is in essence
to<BR>simulate a THREE Deck Multi Zone System). T24 Standard system for this<BR>zone is PSZ.<BR><BR>There are both heating and cooling unmet load hrs, but on one zone the<BR>heating unmet load hrs is 1300 and the rest of the zone are minor. This<BR>single handedly is what is probably causing the problem.<BR><BR><BR><BR>This zone is similar to many other zones in use, geometry and so on and<BR>except for this one every other zone of similar nature functions<BR>perfectly well....<BR><BR><BR><BR><BR><BR><BR><BR>The same zone on the T24 Proposed appears perfectly normal.... See image<BR>below....<BR><BR><BR><BR><BR><BR><BR><BR>So again, T24 standard uses a PSZ and the T24 Proposed uses a SZRH....<BR>It is impossible for a zone to have a minimum temp at -57.8 F in May in<BR>San Diego...... the T24 Standard is doing something wrong! I tried many<BR>things, like increasing the Hot Water Entering Zone temp., deleting the<BR>system for this zone and re-assigning
to a new system.... Nothing seems<BR>to solve the problem....<BR><BR><BR><BR>Any help would again be greatly appreciated....<BR><BR>Thanks<BR><BR>Prem<BR><BR><BR><BR><BR><BR>From: Hwakong Cheng [mailto:<A href="mailto:hwakong@hotmail.com" ymailto="mailto:hwakong@hotmail.com">hwakong@hotmail.com</A>] <BR>Sent: Wednesday, February 10, 2010 11:59 AM<BR>To: Sundharam, Premnath<BR>Subject: RE: [Equest-users] Hrs exceeding throttling range on T24<BR>baseline<BR><BR><BR><BR>In my experience, insufficient capacity in primary equipment (chillers,<BR>towers, fans, etc) is seldom the cause of hours out of throttling range.<BR>I would look more at reheat capacities, presence/absence of preheat<BR>coil, presence/absence of reheat coils, and other control issues. These<BR>are not autosized by eQUEST - for example, sizing the reheat coil<BR>capacity is done in DOE-2 by specifying the reheat delta T. Sometimes<BR>there are different system types between the proposed
and standard<BR>models that can cause differences in unmet load hours between the two.<BR>Are your hours out of throttling due to insufficient cooling,<BR>insufficient heating, or both? Is it one zone or many? You probably need<BR>to review the detailed and hourly reports for the standard model to<BR>understand what's not working right in that run... and then figure out a<BR>way to fix that in the original model. <BR><BR>We always see low heating energy in our T-24 proposed runs. We think<BR>it's an artifact of eQUEST rather than a reflection of reality. <BR><BR><BR>________________________________<BR><BR>Date: Wed, 10 Feb 2010 11:11:24 -0600<BR>From: <A href="mailto:psundharam@DLRGROUP.com" ymailto="mailto:psundharam@DLRGROUP.com">psundharam@DLRGROUP.com</A><BR>To: <A href="mailto:equest-users@lists.onebuilding.org" ymailto="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</A><BR>Subject: [Equest-users] Hrs exceeding
throttling range on T24 baseline<BR><BR>Hello All,<BR><BR><BR><BR>I am doing a Title 24 Compliance through eQuest and I am just trying to<BR>do a reality check to see if the model is performing correct.<BR><BR><BR><BR>Based on the T24 proposed and standard output files, it appears that the<BR>T24 standard building has 17.6% outside of throttling range, where as<BR>the T24 proposed has only 0.4% outside of throttling range.<BR><BR>One thing I don't understand is, if the program calculates its own<BR>capacities, then how could T24 standard have such a huge unmet load<BR>hours.<BR><BR>Anyways, is there a way to fix the T24 standards unmet load hours even<BR>though the model complies with T24?<BR><BR><BR><BR>Also another question.... How do I check the heating capacity of the<BR>system designed in Btu per sf in the output files... we typically see<BR>around 20 Btu per sf as the heating capacity required in Phoenix...<BR>assuming similar condition in inland
San Diego... I wanted to check the<BR>heating consumption against capacity, the program is showing a really<BR>low heating need in San Diego which I seriously doubt... see attached<BR>compliance report...<BR><BR><BR><BR><BR><BR><BR><BR><BR><BR><BR><BR>Any help would be greatly appreciated.<BR><BR>Thanks<BR><BR>Prem<BR><BR><BR><BR>Premnath Sundharam, Assoc. AIA, LEED AP<BR><BR>Architectural Designer | Senior Associate<BR><BR><A href="mailto:psundharam@dlrgroup.com" ymailto="mailto:psundharam@dlrgroup.com">psundharam@dlrgroup.com</A><BR><BR>DLR Group<BR><BR>Architecture Engineering Planning Interiors<BR><BR>o: 602/381-8580<BR>6225 North 24th Street, Suite 250 Phoenix, AZ 85016-2020<BR>dlrgroup.com <<A href="http://www.dlrgroup.com/" target=_blank>http://www.dlrgroup.com/</A>> | listen.DESIGN.deliver<BR><BR><BR><BR><BR><BR>________________________________<BR><BR>Hotmail: Trusted email with
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target=_blank>http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</A><BR><BR><BR>End of Equest-users Digest, Vol 23, Issue 16<BR>********************************************<BR></DIV></DIV><!-- cg15.c2.mail.ac4.yahoo.com compressed/chunked Mon Feb 1 22:13:06 PST 2010 --></div><br>
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