[bldg-sim] Equest system sizing problem

[khan muhammad]

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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