[Equest-users] Unmet Hours

[Dakota Kelley]

…the way the hours are counted.  The Air-Side Summary report is good for showing heating vs. cooling hours, and which zones are problematic, but it counts hours simultaneously and yields an inflated number.   Multiply the percentage in the BEPS report by the number of hours the fans are on and you’ll have the number you’re looking for.  To split that total between heating and cooling, I apply the same ratio shown in the Air-Side Summary report.  There’s probably a more accurate way to do it, but another user will have to enlighten all of us...

 

 

  
                                

DAKOTA KELLEY 

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From: Martz, Amanda [mailto:amartz at klingstubbins.com] 
Sent: Thursday, July 15, 2010 3:22 PM
To: Kelsey VanTassel; M. Shields; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Unmet Hours

 

When I look under the summary tab, it says I have 34% unmet hours. When I look at the BEPS report, it says I have 3%. Does anyone know what the difference in these numbers is?

 

________________________________

From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Kelsey VanTassel
Sent: Thursday, July 15, 2010 3:50 PM
To: M. Shields; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Unmet Hours

 

I like to look under Airside HVAC. Click on the summary tab, then click on “project” in the component tree on the left hand side. It will show you the sum automatically.

 

Kelsey Van Tassel

Mechanical Engineer | kvantassel at sustaineng.com

608.836.4488 ext. 20 | Fax: 608.836.4477

 

Sustainable Engineering Group

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www.sustaineng.com <http://www.sustaineng.com/> 

 

 

From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of M. Shields
Sent: Thursday, July 15, 2010 2:47 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Unmet Hours

 

Hi All,

 

I am trying to determine the number of unmet cooling and heating hours for my model.  From what I’ve read on the BEPU/BEPS reports I can find the % of the hours that the load is unmet, but is there a way to break this out into cooling and heating time?  The other alternative I see is to go through either the SS-F reports, or the Air-Side HVAC section and add up all of the zones unmet heating and cooling hours.  Does anyone know of a better way to determine this?

 

Thanks,

Michael Shields

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