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

[Michael Campbell]

If I don’t model the zonal exhaust, how else can I model this?



*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/>



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*From:* James Hansen [mailto:JHANSEN at ghtltd.com]
*Sent:* Monday, August 27, 2012 5:09 PM
*To:* Michael Campbell; David Eldridge; equest-users at lists.onebuilding.org
*Subject:* RE: [Equest-users] Help - excessive electricity for space heating



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.



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*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/>



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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/>



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