[Equest-users] Hourly space temperature after cooling

Tue Mar 26 08:28:06 PDT 2019

Hello,

Thank you for all your answers. There have been really helpful, and the problem was that I had 90 °F in the day schedules within the S1 Sys1 (PSZ) Cool SCH (different value as mentioned by Bill). The solution was to correct the value to 75 °F, and now the unmet hours match with the SS-O report.

Kind Regards,

Paul Caicedo

Mechanical Engineering Consultant

IntegralMECH

________________________________
From: Bishop, Bill <bbishop at pathfinder-ea.com>
Sent: March 25, 2019 7:27 AM
To: Integral Mechanical Engineering Designs; David Eldridge
Cc: equest-users at lists.onebuilding.org
Subject: RE: Hourly space temperature after cooling

Hi Paul,

The 75 °F input that you shared below for “Indoor Design Temperature” is the DESIGN-COOL-T which is used for sizing calculations (and is optional when using DOE-2.3). The hourly thermostat setpoint is part of the thermostat schedule so you need to look at the day schedules within the S1 Sys1 (PSZ) Cool Sch.

Regards,

~Bill

William Bishop, PE, BEMP, BEAP, CEM, LEED AP

Senior Energy Engineer

[Pathfinder-EA-logo-2]T: (585) 698-1956                        F: (585) 325-6005

bbishop at pathfinder-ea.com<mailto:wbishop at pathfinder-ea.com>        www.pathfinder-ea.com<http://www.pathfinder-ea.com/>

134 South Fitzhugh Street

Rochester, NY 14608               [cid:image008.png at 01D4E2EB.7DDE2750]         Ask me why Carbon Fee & Dividend may be right for you.

From: Equest-users <equest-users-bounces at lists.onebuilding.org> On Behalf Of Integral Mechanical Engineering Designs via Equest-users
Sent: Saturday, March 23, 2019 2:34 PM
To: David Eldridge <DEldridge at grummanbutkus.com>; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Hourly space temperature after cooling

Hi David,

Thanks for the answer. I don´t think that explain the data because the system is working most of the time during the year, and a note in the SS-O report shows that the temperature counts are made only for the hours when the fans are on. The cooling schedule matches with the  occupancy schedule.

[cid:image009.png at 01D4E2EB.7DDE2750]

The set point is 75 °F and the throttle range is 2 °R.

[cid:image010.png at 01D4E2EB.7DDE2750]

The BEPS report shows that are 155 unmet hours, but the SS-O report gives a value of at least 2505 (adding from 80-85 and above 85).

Kind Regards,

Paul Caicedo

Mechanical Engineering Consultant

IntegralMECH

From: David Eldridge <DEldridge at grummanbutkus.com<mailto:DEldridge at grummanbutkus.com>>
Sent: March 22, 2019 9:29 AM
To: Integral Mechanical Engineering Designs
Subject: RE: Hourly space temperatura after cooling

That SS-O report should be after cooling (it’s a “system” report), but it may include some hours when the control system is in setback – it’s not only for occupied hours, would that explain your data?

There is a separate module for report variables that you can specify to document any number of internal calculations, including one or more space temperatures – it’s been a while since I set one of those up but if you search this community for “report variables” some instructions should pop up.

These can then also be exported to excel, or printed in the *.sim report.

David

David S. Eldridge, Jr., P.E., LEED AP BD+C, BEMP, BEAP, HBDP

Associate

Direct: (847) 316-9224 | Mobile: (773) 490-5038

Grumman/Butkus Associates | 820 Davis Street, Suite 300 | Evanston, IL 60201

Energy Efficiency Consultants and Sustainable Design Engineers

grummanbutkus.com<http://grummanbutkus.com/> | Blog<http://grummanbutkus.com/blog> | Facebook<https://www.facebook.com/pages/GrummanButkus-Associates/1385285015032526> | Twitter<https://twitter.com/grummanbutkus>

From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Integral Mechanical Engineering Designs via Equest-users
Sent: Friday, March 22, 2019 8:51 AM
To: equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Subject: [Equest-users] Hourly space temperatura after cooling

Hi all,

If I open the BEPS Building Energy Performance, there are 155 unmet hours. I would like to get the temperature values throughout the year after cooling, but the only related option that I can see is the SS-O Space Temperature Summary where the temperatures above the set point are much more than the unmet hours. It seems that is the report of the space before cooling.

How could I get the space temperature after cooling to have relation with the unmet hours?

Kind Regards,

Paul Caicedo

Mechanical Engineering Consultant

IntegralMECH
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