[Equest-users] Basline fan power (again...)

[jacob goodman]

Thanks for the help Bill, that makes it look far more reasonable.


On Tue, Oct 8, 2013 at 8:25 AM, Bishop, Bill <bbishop at pathfinder-ea.com>wrote:

>  Jacob,****
>
> ** **
>
> You need to modify your bhp equation. You don’t just add the 0.5” - you
> calculate “A” per the equation on Table 6.5.3.1.1A.****
>
> ** **
>
> Regards,****
>
> Bill****
>
> ** **
>
> *William Bishop, PE, BEMP, BEAP, LEED AP **|** Pathfinder Engineers &
> Architects LLP*
>
> Senior Energy Engineer****
>
> ** **
>
> 134 South Fitzhugh Street                 Rochester, NY 14608****
>
> T: (585) 325-6004 Ext. 114            F: (585) 325-6005****
>
> bbishop at pathfinder-ea.com <wbishop at pathfinder-ea.com>
> www.pathfinder-ea.com****
>
> P   Sustainability – the forest AND the trees. P   ****
>
> ** **
>
> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *jacob goodman
> *Sent:* Tuesday, October 08, 2013 10:18 AM
> *To:* equest-users at lists.onebuilding.org
> *Subject:* [Equest-users] Basline fan power (again...)****
>
> ** **
>
> Dear Community, ****
>
> ** **
>
> I'm working on a baseline system fan power calculation and am getting some
> absurdly high baseline fan powers, but I can't see where I'm going wrong.
> See attached calculations.****
>
> ** **
>
> To start, the baseline model contains one system per thermal zone since it
> is the P*SZ*-AC type these are named after the VAV terminals or thermal
> zone in the proposed model. Since the building and corresponding thermal
> zones are small the the pressure drop adjustment from the MERV 13 filter on
> the proposed system seems to make a huge difference in the resulting fan
> powers. ****
>
> ** **
>
> By inputting the kW/CFM values my baseline heating system does almost
> nothing. Also, I don't think putting a portion of the power in the exhaust
> stream would get rid of the problem completely, but that is one thing I
> havn't tried.****
>
> ** **
>
> Thanks!!!!****
>
> Jacob****
>
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