[Equest-users] Zones with different HVAC systems

[Jing Hong]

Bruce, you mean in eQuest even if a zone needs ventilation only, I still
have to set the zone as conditioned? Then I set the HVAC system as no
heating or cooling. Is that correct?
Thanks,
Jing

On Wed, Nov 15, 2017 at 5:29 PM Bruce Easterbrook <bruce5 at bellnet.ca> wrote:

> Jing, I think the mistake is making the zone unconditioned.  You are
> trying to keep it under control with ventilation, therefore it is
> conditioned, no active heating or cooling but it is conditioned.  You also
> need the temperature profile of what is going on in that space so you can
> understand what is happening.  Buildings aren't always intuitive depending
> what is going on and where it is located.  You have a fully walled and
> windowed zone I presume.  For unconditioned I would think a space like a
> parking garage that is more than half open on 3 sides.
> You also have the impacts of the floor below and the floor above which
> probably have larger boundary surfaces with your second floor space than
> that space has exterior wall.  It may not be energy efficient to let the
> second floor stay near exterior temperatures because of it's impact on the
> floors above and below.  By making it conditioned and giving it to a system
> will give you the information you need to evaluate whether you want to
> treat it with just ventilation.  Open up your heating and cooling set
> points so there really isn't going to be a call for heating and cooling and
> see what the temperatures in the space do.   Then start tinkering with the
> exhaust cfm and zone cooling set point to see if this is practical from an
> energy consumption point of view.  Also watch what is happening in the
> floor above and the floor below.  You can advantage of auto-sizing too.
> Bruce Easterbook P.Eng.
> Abode Engineering
>
>
> On 11/15/2017 2:33 PM, Jones, Christopher via Equest-users wrote:
>
> SUM system type. The DOE2.2 manuals do not explain the SUM system type
> very well. From the DOE2.1e manual:
>
>
>
> 4. System Descriptions
>
> a. Summation of LOADS to PLANT (SUM)
>
> This is actually not a secondary HVAC distribution system, but rather a
> diagnostic tool, which is used to 1) pass the hourly LOADS program output
> to the PLANT program without simulating a system, 2) adjust the constant
> zone temperatures specified in LOADS, 3) simulate the thermostat schedules
> (but not the equipment), and 4) tabulate energy consumption by ZONE (or
> group of ZONEs). SUM is not a miscellaneous SYSTEM-TYPE for UNCONDITIONED
> zones.
>
>
>
> UNCONDITIONEO ZONEs should be assigned to another SYSTEM.
>
>
>
>
>
>
>
> *Christopher R. Jones*, P.Eng.
>
> Technical Specialist
>
> Sustainability & Energy
>
>
>
> T +1 416-644-0252
>
>
>
> 2300 Yonge Street, Suite 2300
> <https://maps.google.com/?q=2300%0D+Yonge+Street,+Suite+2300%0D+Toronto,%0D+ON+M4P+1E4+Canada&entry=gmail&source=g>
>
> <https://maps.google.com/?q=2300%0D+Yonge+Street,+Suite+2300%0D+Toronto,%0D+ON+M4P+1E4+Canada&entry=gmail&source=g>
>
> Toronto, ON M4P 1E4 Canada
> <https://maps.google.com/?q=2300%0D+Yonge+Street,+Suite+2300%0D+Toronto,%0D+ON+M4P+1E4+Canada&entry=gmail&source=g>
>
> wsp.com
>
>
>
>
>
> *Please consider the environment before printing...*
>
>
>
>
>
> *From:* Equest-users [mailto:equest-users-bounces at lists.onebuilding.org
> <equest-users-bounces at lists.onebuilding.org>] *On Behalf Of *Jing Hong
> via Equest-users
> *Sent:* Wednesday, November 15, 2017 2:13 PM
> *To:* equest-users at lists.onebuilding.org
> *Subject:* [Equest-users] Zones with different HVAC systems
>
>
>
> Dear All,
>
>
>
> I have a building with more than one kind HVAC system. I have the first
> floor with VAV system, and the second floor only has ventilation fans
> running. So I made all the zones on Second Floor unconditioned, and choose
> SUM as air-side HVAC system for second floor. However, the Space Cool of no
> VAV for second floor is even higher than that of the whole VAV, which does
> not make sense to me.
>
> Do you know how the eQuest calculate Space Cool? Should The VAV energy
> consumption be Space Cool+Vent. Fans shown on the simulation output?
>
> Thank you,
>
> Jing
>
>
>
> --
>
> PhD Candidate, LEED AP BD+C
>
>
>
> School of Architecture and Urban Planning
>
> University of Wisconsin-Milwaukee
>
>
>
> ------------------------------
>
>
> NOTICE: This communication and any attachments ("this message") may
> contain information which is privileged, confidential, proprietary or
> otherwise subject to restricted disclosure under applicable law. This
> message is for the sole use of the intended recipient(s). Any unauthorized
> use, disclosure, viewing, copying, alteration, dissemination or
> distribution of, or reliance on, this message is strictly prohibited. If
> you have received this message in error, or you are not an authorized or
> intended recipient, please notify the sender immediately by replying to
> this message, delete this message and all copies from your e-mail system
> and destroy any printed copies. You are receiving this communication
> because you are listed as a current WSP contact. Should you have any
> questions regarding WSP's electronic communications policy, please consult
> our Anti-Spam Commitment at www.wsp.com/casl. For any concern or if you
> believe you should not be receiving this message, please forward this
> message to caslcompliance at wsp.com so that we can promptly address your
> request. Note that not all messages sent by WSP qualify as commercial
> electronic messages.
>
> AVIS : Ce message, incluant tout fichier l'accompagnant (« le message »),
> peut contenir des renseignements ou de l'information privilégiés,
> confidentiels, propriétaires ou à divulgation restreinte en vertu de la
> loi. Ce message est destiné à l'usage exclusif du/des destinataire(s)
> voulu(s). Toute utilisation non permise, divulgation, lecture,
> reproduction, modification, diffusion ou distribution est interdite. Si
> vous avez reçu ce message par erreur, ou que vous n'êtes pas un
> destinataire autorisé ou voulu, veuillez en aviser l'expéditeur
> immédiatement et détruire le message et toute copie électronique ou
> imprimée. Vous recevez cette communication car vous faites partie des
> contacts de WSP. Si vous avez des questions concernant la politique de
> communications électroniques de WSP, veuillez consulter notre Engagement
> anti-pourriel au www.wsp.com/lcap. Pour toute question ou si vous croyez
> que vous ne devriez pas recevoir ce message, prière de le transférer au
> conformitelcap at wsp.com afin que nous puissions rapidement traiter votre
> demande. Notez que ce ne sont pas tous les messages transmis par WSP qui
> constituent des messages electroniques commerciaux.
>
>
>
> -LAEmHhHzdJzBlTWfa4Hgs7pbKl
>
> _______________________________________________
> Equest-users mailing listhttp://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org
> To unsubscribe from this mailing list send  a blank message to EQUEST-USERS-UNSUBSCRIBE at ONEBUILDING.ORG
>
>
> --
PhD Candidate, LEED AP BD+C

School of Architecture and Urban Planning
University of Wisconsin-Milwaukee
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20171116/3e3bb424/attachment-0002.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 25844 bytes
Desc: not available
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20171116/3e3bb424/attachment-0004.png>