[bldg-sim] Equest system sizing problem

[Graham & Megan]

I am not used to using the EQuest interface of DOE-2.2, but are you sizing
from the weather file or design day?  If the design day, was this
automatically changed when you changed weather files?
G
----- Original Message ----- 
From: "khan muhammad" <muhammadhaiderkhan at hotmail.com>
To: <bldg-sim at gard.com>
Cc: <carlson at cdhenergy.com>
Sent: Tuesday, August 01, 2006 12:16 PM
Subject: [bldg-sim] Equest system sizing problem


> I am sorry I think I didnt clearly explain what I am trying to do, I have
a
> 125000 sq ft building and I am keeping the architectural characteristics
> same but chaging the weather files between Minneapolis, Miami and St.
Louis.
> I anticipated EQuest to report a higher capacity chiller for Miami and
> higher capacity boiler for Minneapolis as compared to other weather files
> but it is showing a flat trend. i can understand that the chiller size
might
> not be effected a lot by three different climate zones but rather by solar
> angle (since it is a high glazed building) or other factors but Boiler
size
> should have been reported more for minneapolis! any explanation would be
> helpful. please also note the energy consumptions are showing the right
> trend (more boiler energy consumption in Minneapolis and more chiller
energy
> consumption in Miami).
> Thanks,
> Haider.
>
> >From: Steven Carlson <carlson at cdhenergy.com>
> >To: muhammadhaiderkhan at hotmail.com
> >Subject: Re: [bldg-sim] Equest system sizing problem
> >Date: Thu, 27 Jul 2006 13:39:26 -0500
> >
> >Sizing is based on peak loads not annual loads.  HDD and CCD are
corelated
> >to annual loads.  You would need to look at peak temperatures and solar
> >gains.
> >
> >khan muhammad wrote:
> >>I am trying to model a 125000 sq ft building in 3 different climate
zones
> >>to see the system sizing predicted by EQuest. I see a very strange
trend,
> >>even though the peak loads are more for locations with more HDDs and
CDDs
> >>the system rated capacity estimated by EQuest does not follow that
trend.
> >>I was wondering if anyone has insight to why this could be?
> >>Haider.
> >>
> >>
> >>
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> >>
> >>
> >
> >--
> >Steven Carlson P.E.
> >CDH Energy Corp.
> >33 N 1st St
> >Evansville, WI  53536
> >608-882-0111
> >www.cdhenergy.com
>
>
>
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