[Equest-users] stumped re. excessive heating

[David C. Fishel]

Hi Christian

I did not have a weather file for Medellin but used one for Bogota.  Wow Bogota is at an elevation of 8400 feet and its cold there.

Medellin is above 4000 feet (Not so tropical and heating is needed)  you should use this altitude in your model (you currently have 0) this should allow eQuest to properly size the heat capacity for this altitude and your warnings should disappear.

Perhaps you should re-consider electric heat.

Hope this helps



-David

David C. Fishel, PE, LEED AP BD+C
Senior Energy Analyst

RLF | architecture engineering interiors
4750 New Broad Street, Orlando, FL 32814
p 407.730-8600 | f 407.730-3603| www.rlfarchitects.com<http://www.rlfarchitects.com/>



AIA Florida’s 2010 Firm of the Year
P Please consider the environment before printing this e-mail


From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Christian Stalberg
Sent: Wednesday, March 06, 2013 10:14 AM
To: 'Paul Diglio'; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] stumped re. excessive heating

Here you go.


---
Christian Stalberg
Principal
Natural Intelligence, LLC
http://naturalintelligence.us <blocked::blocked::http://naturalintelligence.us/>
Tel. 919.986.9237


From: Paul Diglio [mailto:paul.diglio at sbcglobal.net]
Sent: Wednesday, March 06, 2013 9:54 AM
To: cstalberg at naturalintelligence.us<mailto:cstalberg at naturalintelligence.us>; equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Subject: Re: [Equest-users] stumped re. excessive heating

Christian:

Can you post your pd2 and inp files so we can take a look?

Paul Diglio, CEM, CBCP
87 Fairmont Avenue
New Haven, CT 06513
203-415-0082

www.pdigliollc.com<http://www.pdigliollc.com>


________________________________
From: Christian Stalberg <cstalberg at naturalintelligence.us<mailto:cstalberg at naturalintelligence.us>>
To: equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Sent: Wed, March 6, 2013 9:06:59 AM
Subject: [Equest-users] stumped re. excessive heating
I have a proposed building in a  tropical climate with CHW cooling and
no heating. Per ASHRAE I’m installing electric heat in both the Baseline
and Proposed models. The heating in the Proposed is double what it is
in the Baseline. Worse yet, I am getting the following warning:


**WARNING**********************************************************************

             ZONE EL1 East Perim Zn (G.E19)

             might have insufficient heating capability.

             Check that the SYSTEM or ZONE HEATING-CAPACITY plus this

             ZONEs BASEBOARD-RATING is adequate to maintain the ZONE

             specified DESIGN-HEAT-T for the calculated peak ZONE load

             (see LS-A or LS-B for the ZONE peak load.)



             SYSTEM UMA 102

             which supplies the above listed ZONE, has a design heating

             coil exit temperature, HEAT-SET-T,(plus any zone reheat)

             below its MAX-SUPPLY-T or the ZONE DESIGN-HEAT-T, which

             might account for the insufficient heating capability.


Does eQUEST overcompensate for an erroneous config for heating such that
it would behave this way? What should I look for?

Thanks in advance.

---
Christian Stalberg
Principal
Natural Intelligence, LLC
http://naturalintelligence.us
Tel. 919.986.9237
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20130306/7c6c4685/attachment-0002.htm>