[Equest-users] Help - excessive electricity for space heating

James Hansen JHANSEN at ghtltd.com
Mon Aug 27 14:09:02 PDT 2012


I just ran your files, and in the BEPS report, I show 9,284 MBTU gas
heating and 490 MBTU cooling.  Regardless of what's happening with your
electric heating, something doesn't seem right there unless you are
modeling a building in Antarctica.  

 

I'd look at all of the funky exhaust flow rates you have for your zones.


 

EL1 NE Perim Zn (G.NE9) under the UH Electrical system has a supply flow
rate of 5 CFM and an exhaust flow rate of 1,200 CFM with infiltration
makeup.  So if that zone heating temp is not met, it's trying to heat
the space with 5 CFM of supply air yet there is then a simultaneous
1,200 CFM infiltration load ??

 

I don't know, maybe you've got it set up correctly, I just never use
plenums or zonal exhaust because I think it unnecessarily complicates
things.  Then again, I normally model office buildings.

 

GHT Limited
James Hansen, P.E., LEED AP
Senior Associate
1010 N. Glebe Road, Suite 200
Arlington, VA  22201-4749
703-243-1200 (office)

703-338-5754 (cell)
703-276-1376 (fax)

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

 

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Michael
Campbell
Sent: Monday, August 27, 2012 5:00 PM
To: David Eldridge; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Help - excessive electricity for space
heating

 

When I make changes to the system operation it doesn't have any effect
on the overall heating electricity.  For example, I tried eliminating
the unit heaters in the garage and changing set points in the other
spaces, but it had no effect at all on the total electric for space
heating.  

 

Mike Campbell, EIT, LEED AP O+M
Sustainability Specialist

(610) 569-1047 office

(610) 569-1040 fax

mike at sustainablesolutionscorporation.com

www.SustainableSolutionsCorporation.com
<http://www.sustainablesolutionscorporation.com/> 

 

 

 

  

 

This email message and any attachments are for the sole use of the
intended recipient(s) and may contain confidential and privileged
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prohibited. If you are not the intended recipient, please contact the
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From: David Eldridge [mailto:DEldridge at grummanbutkus.com] 
Sent: Monday, August 27, 2012 4:56 PM
To: 'Michael Campbell'; equest-users at lists.onebuilding.org
Subject: RE: [Equest-users] Help - excessive electricity for space
heating

 

Looks like several PSZ heat pumps with "Heating-EIR" values and some
other unit heaters using electricity.

 

David

 

 


 

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

Grumman/Butkus Associates

 


 

 

From: equest-users-bounces at lists.onebuilding.org 
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Michael
Campbell
Sent: Monday, August 27, 2012 3:26 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Help - excessive electricity for space heating

 

Hello,

 

I'm having some trouble with my simulation - I'm currently working on
this for a LEED project and I'm putting the proposed design together. I
think I'm at the point where I'm about finished with the proposed
design.  When I run the simulation, it is showing almost as much
electric used for heating as I'm using for cooling - the problem is that
nearly the entire building uses gas heat.  Can someone help me out here?

 

Thanks

 

Mike Campbell, EIT, LEED AP O+M
Sustainability Specialist

(610) 569-1047 office

(610) 569-1040 fax

mike at sustainablesolutionscorporation.com

www.SustainableSolutionsCorporation.com
<http://www.sustainablesolutionscorporation.com/> 

 



 



 

This email message and any attachments are for the sole use of the
intended recipient(s) and may contain confidential and privileged
information. Any unauthorized review, use, disclosure or distribution is
prohibited. If you are not the intended recipient, please contact the
sender by reply email and destroy all copies of the original message and
any attachments.

 



The information contained in this communication is confidential, may be privileged, and is intended only for the use of the addressee.  It is the property of GHT Limited.  Unauthorized use, disclosure or copying of this communication or any part thereof is strictly prohibited and may be unlawful.  If you have received this communication in error, please notify me immediately by return e-mail or by e-mail to ght at ghtltd.com, and destroy this communication and all copies thereof, including all attachments.  Thank you.



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