[Equest-users] Heating load during weekends

[Bruce Easterbrook]

Once the people are gone there are significant adjustments which can be 
made to how the building operates.  You can set the fans to cycle on in 
unoccupied hours, ie the just come on to maintain temperature.  You can 
adjust your unoccupied temperatures as well, "setback".  The major 
adjustment is outside air, no people, don't need it, just a little to 
control off-gassing.  Conditioning outside air is a major consumer of 
energy.  There are several ways to adjust this in eQuest.
The hospital running 24/7 initially you would think should be the same 
every day.  There are things going on which may only happen on week days 
which could change this.  Operating theatres come to mind, which can 
require large amounts of outside air during operation, labs and fume 
hoods, laundry services.  The population would be much higher during 8-5 
on week days, more outside air required.
Equest has certain standard schedules (defaults) it will use for a 
particular type of building.  These are just crude assumptions.  
Everyone of them should be reviewed and tuned to your project.
Bruce Easterbrook P.Eng.
Abode Engineering

On 15/06/2010 04:14 PM, John Aulbach wrote:
> Anna:
> If you shut off equipment, turn off lights, or reduce people, your 
> heating will have to work harder.
> Not sure what "significant" means.
>
> John R. Aulbach, PE, CEM
>
> Senior Energy Engineer
>
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> ------------------------------------------------------------------------
> *From:* Anna Kim <Anna.Kim at cadmusgroup.com>
> *To:* "equest-users at lists.onebuilding.org" 
> <equest-users at lists.onebuilding.org>
> *Sent:* Tue, June 15, 2010 12:21:16 PM
> *Subject:* [Equest-users] Heating load during weekends
>
> Hello,
>
> I have been using EQuest to run some commercial building simulations. 
> I’ve found that the electric (DX) heating load during weekends in the 
> wintertime are unusually high compared to weekday loads. I ran a 
> building that was a hospital with 24/7 occupancy and yet the heating 
> loads between weekend and weekday are significantly different.
>
> Was there some hard- or soft-coded adjustment made in the program for 
> weekends?
>
> Thanks,
>
> Anna Kim, Analyst
> The Cadmus Group, Inc.
>
> 720 SW Washington Street
> Suite 400
> Portland, OR 97205
> Voice:      (503) 575-4556
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> Main:       (503) 467-7100
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