[Equest-users] Evaporative cooler with 100% outside air

[Jing Hong]

Thank you Bill. I revised the exhaust flow rate setting based on your
advise, and it works!

Jing

On Mon, Jul 23, 2018 at 9:22 AM Bishop, Bill <bbishop at pathfinder-ea.com>
wrote:

> Hi Jing,
>
> Your screen shots show that you have entered flowrates for the system
> supply flow, zonal supply flow, zonal outside air and zonal exhaust flow.
> The error is caused by the zonal exhaust flow being greater than the
> entered system supply flow. You have also selected “Track Exhaust Flow”
> which requires the air handler to supply at least as much air as the
> exhaust requirement. You can do any of the following to eliminate the error:
>
> 1.)    Let the system supply flow rate default (leave the input field
> empty). The system will be sized to match the zone exhaust flow (or
> possibly higher).
>
> 2.)    Enter the system supply flow rate to be at least as much as the
> zone exhaust flow rate.
>
> 3.)    Set the zonal exhaust to “No Airflow Tracking” and the
> EXHAUST-SOURCE to something other than “Air Handler”.
>
>
>
> Regards,
>
> ~Bill
>
>
>
> *William Bishop, PE, BEMP, BEAP, CEM, LEED AP*
>
> *Senior Energy Engineer*
>
>
>
> [image: Pathfinder-EA-logo-2]*T: (585) 698-1956*                        F:
> (585) 325-6005
>
> bbishop at pathfinder-ea.com <wbishop at pathfinder-ea.com>
> www.pathfinder-ea.com
>
> 134 South Fitzhugh Street
>
> Rochester, NY 14608                                *Ask me why Carbon Fee
> & Dividend may be right for you.*
>
> ******Pathfinder’s Summer Hours begin June 4th.  Our switchboard and
> office will be closed at noon on Fridays through August 31st.*****
>
>
>
> *From:* Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] *On
> Behalf Of *Brian Fountain via Equest-users
> *Sent:* Monday, July 23, 2018 9:36 AM
> *To:* Jing Hong via Equest-users <hongjing.shirley at gmail.com>
> *Cc:* equest-users at onebuilding.org
> *Subject:* Re: [Equest-users] Evaporative cooler with 100% outside air
>
>
>
> Look at the .sim file (view detailed simulation results). There will
> (likely) be error messages at the bottom of that text file relating to why
> the system/plant module could not run,
>
>
>
> *From: *Jing Hong via Equest-users
>
> *Sent: *Monday, July 23, 2018 9:31 AM
>
> *To: *equest-users at lists.onebuilding.org; equest-users at onebuilding.org
>
> *Reply To: *Jing Hong
>
> *Subject: *[Equest-users] Evaporative cooler with 100% outside air
>
>
>
> Dear All,
>
>
>
> I have a constant volume 100% outside air evaporative cooler for a
> kitchen. The CFM is 4500. So I set the design flow rate 4500 and outside
> air flow 4500. When I performed simulation, the simulation was terminated
> due to errors. However, there is no error shown in the list of errors. In
> addition, if I increase the design flow rate above the outside air flow
> rate 4500, then this problem will be gone.
>
> Did anyone have this problem before? How could I fix it?
>
> Thank you!
>
>
>
>
>
>
>
> [image: image.png]
>
> [image: image.png]
>
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> [image: image.png]
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> [image: image.png]
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> [image: image.png]
>
>
>
>
>
> Jing Hong
>
> --
>
> School of Architecture and Urban Planning
>
> University of Wisconsin-Milwaukee
>
>
>
>
>
>

-- 
PhD Candidate, LEED AP BD+C

School of Architecture and Urban Planning
University of Wisconsin-Milwaukee
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