[Equest-users] Dummy Zone & DOAS with heat wheel recovery

[R B]

I always end up adding the DOAS stuff proportionately to the respective
systems. It is too much headache to deal with the dummy zone. That is why I
suggested in the wish list email that the developers should do away with
the dummy zone and write a simple parent OA system with the child AHU's -
seems more straight forward and realistic.
-Rohini

On Fri, Feb 3, 2012 at 10:17 AM, Sami, Vikram
<Vikram.Sami at perkinswill.com>wrote:

> You can add a latent internal load too. For cooling – I think if you
> assign a negative value to the internal source that should work.  The
> challenge is to get the scheduling correct for the load. ****
>
> ** **
>
> As a side note (if your DOAS is supplying neutral air - ignore this) – if
> you are supplying air that is significantly cooler than setpoint
> temperatures (60 degrees & cooler would probably qualify) you need to
> represent the cooling effect of the DOAS air into the room. You can do this
> with a negative internal load in the space with an assigned schedule too.
> ****
>
> ** **
>
> * *
>
> *Vikram Sami*, LEED AP BD+C****
>
> Sustainable Design Analyst****
>
> 1315 Peachtree St. NE, Atlanta, GA 30309****
>
> t: 404-443-7462    f: 404.892.5823       e: vikram.sami at perkinswill.com
> www.perkinswill.com****
>
> *Perkins+Will.*  Ideas + buildings that honor the broader goals of society
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> ** **
>
> ** **
>
> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *Paul Riemer
> *Sent:* Friday, February 03, 2012 10:44 AM
> *To:* 'Brian Fountain'; equest-users at lists.onebuilding.org
>
> *Subject:* Re: [Equest-users] Dummy Zone & DOAS with heat wheel recovery**
> **
>
> ** **
>
> Don’t forget humidity!****
>
> ** **
>
> *Paul Riemer, PE, LEED AP BD+C* ****
>
> *DUNHAM*****
>
> ** **
>
> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *Brian Fountain
> *Sent:* Friday, February 03, 2012 9:19 AM
> *To:* equest-users at lists.onebuilding.org
> *Subject:* Re: [Equest-users] Dummy Zone & DOAS with heat wheel recovery**
> **
>
> ** **
>
> Note that at this point, the OA-FROM keyword is just setting the OA
> temperature for the borrowing system to the return air temperature for the
> lending system.  It isn't really modelling DOAS yet.  The issue this leads
> to is the heat recovery device is seeing the exhaust air stream temperature
> from the dummy zone, not the borrowing zones.
>
> In heating dominated climates, this can be overcome by either adding a
> dummy internal load to the dummy zone to give it a higher return air temp
> for heat recovery or what I do is use the frost control to force the
> exhaust air stream temperature up to a reasonable value (73F) and put that
> as electric heat on a separate, free meter.  In a cooling dominated
> climate, I don't know how you would force that dummy zone return
> temperature down.
>
>
>
> On 2/3/2012 7:44 AM, Soham Babu wrote: ****
>
>  ****
>
> ·         Create Dummy space & dummy zone ****
>
> ·         Create DOAS as system as package single zone assign to dummy Zone
> ****
>
> ·          For other system outside air from DOAS.****
>
>  ****
>
> *From:* equest-users-bounces at lists.onebuilding.org [
> mailto:equest-users-bounces at lists.onebuilding.org<equest-users-bounces at lists.onebuilding.org>]
> *On Behalf Of *RIAD ABED
> *Sent:* Friday, February 03, 2012 2:46 PM
> *To:* equest-users at lists.onebuilding.org
> *Subject:* [Equest-users] Dummy Zone & DOAS with heat wheel recovery****
>
>  ****
>
> *Dear All e-Quest Users*****
>
> *
> *Please how to model a *Dummy Zone* & *DOAS with heat wheel device*(dedicated outdoor outside air) in e-Quest….I need it please very urgent
> …if somebody please help me…..Your reply is very very highly appreciated
> …thanks by Advance****
>
>  ****
>
> My Regards,
> *Riad el Abed*
> *Chief MEP , PQP*
> Tel  +96170 643977****
>
>  ****
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