[Equest-users] Receptacle Energy - COMMERCIAL KITCHENS

Karen Walkerman kwalkerman at gmail.com
Wed Apr 22 06:32:33 PDT 2009

Is anyone aware of a similar resource for a commercial kitchen?  I am doing
a LEED model for a building that has both gas and electric equipment in the
kitchen.  Adding up the nameplate loads gives me something like 25 w/sf for
electrical equipment and 520 btu/sf for gas cooking equipment.  I'm sure
that energy use will be high, but not at these levels.



On Wed, Apr 22, 2009 at 9:11 AM, Fred Porter <FPorter at archenergy.com> wrote:

>  For lab plug load info, go to
> http://www.epa.gov/lab21gov/toolkit/bp_guide.htm and download the
> "Measured Peak ....pdf, and "Right Sizing....pdf."
> And at http://www.epa.gov/lab21gov/toolkit/index.htm see the "Benchmarking
> " link for end-use site energy, and the "Laboratory Equipment Efficiency
> Wiki," if you have any influence over purchasing the equipment.
> If the building is half lab I would be very surprised if the non-receptacle
> TDV energy is only 170 Btu/sf even in balmy CA. (TDV is a type of power
> plant input energy for the non-CA reader.)
> Note that modeling lab airflow and exhaust fans is a bit tricky in DOE2 and
> its not hard to underpredict. There are a few different approaches and the
> appropriate one is dependent on the proposed and baseline designs.
> In particular, even if the lab exhaust airflow is VAV, these exhaust fans
> are usually CV/bypass which is not the DOE2/eQuest default. And the exhaust
> fan power should be derived from manufacturer's sheets or the fan hp on the
> mech schedules. Using static pressure and assumed typical fan efficiency may
> underpredict fan power in many cases because of the nozzle losses,
> particularly if "high plume dilution" fans is used.
> Fred
> >>> steven rutter <stevenrutterjr at gmail.com> 4/21/2009 4:24 PM >>>
> I am trying to model a 2-story college going for LEED. The building
> contains several differernt lab rooms which includes a lof of equipment
> (Approximately 26W/ft^2 for half of the building). After running the
> simulation, the preliminary report states that the annual TDV Energy Use
> Summary for the entire building is 847.95 TDV-kBtu/sqft-yr with 684.71
> towards the receptacle energy. Trying to get the minimum 14% energy cost
> savings is almost impossible with this receptacle energy. What options do I
> have to reduce the Receptacle Energy in order to meet criteria for LEED
> points? Is there somewhere I can input this heat load so it does not have
> such a great impact on the energy use summary report and still have an
> accurate model of the building?
> -Steven Rutter
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