[Equest-users] Changing Ventilation Rate for some months in the year

Fri Sep 29 13:35:12 PDT 2023

Hi Ethan

The only way I know to see OA directly is with the Hourly reports either by System or Zone. Look under the Project & Site Tab - Simulation Output

For HVAC System select Supply Air Flow and Ratio of OA to total SA.  Depending on the zone equipment you can get it in a similar way.

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Melissa Crowe, BEMP, LEED AP
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From: Seaman, Ethan <eseaman at smma.com>
Sent: Friday, September 29, 2023 8:38 AM
To: fraij <fraij at yahoo.com>; equest-users at onebuilding.org
Subject: Re: [Equest-users] Changing Ventilation Rate for some months in the year

I don’t believe there is report that shows monthly OA CFM, but I could be wrong.  Just looking through the “S” reports now and I’m not seeing that.  I’d probably run a before and after case and check the difference in total OA to see if it’s in the ballpark.  This could be done with a parametric run and pulling up both simulation reports side by side and reviewing the total difference.

_______________________________________________
Ethan Seaman
Sustainable Design Analyst
SMMA
t: 617.520.9288
www.smma.com<http://www.smma.com/>

From: fraij <fraij at yahoo.com<mailto:fraij at yahoo.com>>
Sent: Friday, September 29, 2023 8:17 AM
To: Seaman, Ethan <eseaman at smma.com<mailto:eseaman at smma.com>>; equest-users at onebuilding.org<mailto:equest-users at onebuilding.org>
Subject: RE: [Equest-users] Changing Ventilation Rate for some months in the year

Hello Ethan,

Thanks for your reply

I am trying to change the OA CFM. I created schedules as you suggest below but I could not find the OA CFM fora each zone after I apply these schedules and the OA CFM in the report SV-A did not change.

Do you know where can I find the OA CFM after I apply the new miniminum outside air schedule?

Thanks for the help again

Regards

Ahmad

-------- Original message --------
From: "Seaman, Ethan" <eseaman at smma.com<mailto:eseaman at smma.com>>
Date: 29/9/23 9:36 pm (GMT+10:00)
To: Ahmad Fraij <fraij at yahoo.com<mailto:fraij at yahoo.com>>, equest-users at onebuilding.org<mailto:equest-users at onebuilding.org>
Subject: RE: [Equest-users] Changing Ventilation Rate for some months in the year

Ahmad,

Are you trying to vary the system CFM or OA CFM?  See below for eQuest’s definition of Minimum OA Sch.  The minimum OA schedule varies the hourly OA ratio.  To create an annual schedule to vary the CFM seasonally you can create an additional set of weekly/daily schedules, and then set the run times in the annual schedule.

[cid:image008.png at 01D9F2F1.7F41F750]

_______________________________________________
Ethan Seaman
Sustainable Design Analyst
SMMA
t: 617.520.9288
www.smma.com<https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwww.smma.com&c=E,1,nu0--kPCzpQAOY0JxQuFNmVFCXa4n32WMFcCQIaSgGup7BXhf37L7jrlAM7x7QGpKG6Sd_eqVP-p3vB6DA0RYWUOknGRclrxsjQZYQRE5OSOfV_KoRE,&typo=1&ancr_add=1>

From: Equest-users <equest-users-bounces at lists.onebuilding.org<mailto:equest-users-bounces at lists.onebuilding.org>> On Behalf Of Ahmad Fraij via Equest-users
Sent: Friday, September 29, 2023 6:16 AM
To: equest-users at onebuilding.org<mailto:equest-users at onebuilding.org>
Subject: Re: [Equest-users] Changing Ventilation Rate for some months in the year

Hello Guys,

Did  anyone have a chance to review my question in my email below?

I found the option to add "Minimum OA Schedule" but this schedule is fraction of what? Is it fraction of the CFM/person values that we enter in the Zones? I have added this schedule and changed the fractions and the energy consumption and the heating loads have been changed but the OA air flow rate & ratio in the report SV-A has not changed? Am I missing something?

If the "Minimum OA Schedule" changes the OA flow rate, then where can I find this value? I am trying to change the OA flow rate for a specific value for only three months per year for pandemic mitigation so how can I do that?

Any help will be highly appreciated

Regards

Ahmad

On Thursday, 28 September 2023 at 04:29:56 pm AEST, Ahmad Fraij <fraij at yahoo.com<mailto:fraij at yahoo.com>> wrote:

Hello Guys,

How can I change the ventilation rate for a building in eQUEST software for only three months of the year (Dec, Jam & Feb)?

Your help will be highly appreciated.

Regards

Ahmad
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