[Equest-users] (no subject)
Bruce Easterbrook
bruce5 at bellnet.ca
Wed Mar 3 05:31:13 PST 2010
I would think the difference is in your ventilation. Your proposed
seems to be bringing in much more outside air.
Bruce
On 03/03/2010 08:10 AM, Karen Walkerman wrote:
> with the VAV system, it is likely that your boiler is being used to
> re-heat cool air. This can account for significant additional boiler
> energy use, as well as boiler energy use in the summer. If this is an
> Appendix G baseline, take a look at the controls required for water
> temperature. Also, due to the high increase in boiler energy use
> between the proposed and baseline, I'm guessing there may be a space
> that requires significant cooling all year. If this is the case, you
> may be required to provide a separate cooling system for this space.
>
> --
> Karen
>
> On Wed, Mar 3, 2010 at 6:33 AM, Paul S. <sep.paul at gmail.com
> <mailto:sep.paul at gmail.com>> wrote:
>
> I've got the result of the end use between baseline and proposed
> design, everything seems logical except the boilers consumption.
> Boilers are the same type in the baseline and proposed design.
>
> Boilers in the baseline are sized by eQUEST, in the proposed boilers
> are given calculated by the engineers.
>
> The only difference is in the proposed design we used air-cooled
> chillers and FCU and for the baseline water-cooled and packaged VAVs.
>
> Any suggestion about this difference in BTU consumption. And why in
> baseline desing in June July we have BTU consumption while in the 2
> designs have same temperatures and same schedules.
>
> thanks
>
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