Re: [EnergyPlus_Support] Summary reports problem - Demand end-use is 0 W, while energy end-use is not 0kWh

2014-07-03 17:09 GMT-03:00 Jason Glazer jglazer@xxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx>:

Â

I believe the demand column uses the same values as shown in
the Demand End Use Components Summary report.

Jason

On 7/3/2014 2:46 PM, Santiago Velez santiagogvelez@xxxxxxxxx
[EnergyPlus_Support] wrote:
>
>
> Yes!, thank you Jason, that makes total sense, my mistake.
> Actually I arrived at that table after seeing a similar
> situation in the LEED summary table *EAp2-4/5. Performance
> Rating Method Compliance (below)*

> Any ideas about this one?
>
> *
> *
> *EAp2-4/5. Performance Rating Method Compliance*

>
> Electric Energy Use [GJ] Electric Demand [W] Natural Gas
> Energy Use [GJ] Natural Gas Demand [W] Additional Energy Use
> [GJ] Additional Demand [W]
> Interior Lighting 209.22 15226.29 0.00 0.00 0.00 0.00
> *Exterior Lighting* *67.23* *0.00* 0.00 0.00 0.00 0.00

> Space Heating 0.12 0.00 29.71 123993.87 0.00 0.00
> Space Cooling 992.21 75817.96 0.00 0.00 0.00 0.00
> ......... ..............
>
>
>
>
>
>
> *
> IDF input
>
> Exterior:Lights,
> Exterior Lights, !- Name
> On, !- Schedule Name
> 4250, !- Design Level {W}
> AstronomicalClock, !- Control Option
> General; !- End-Use Subcategory
>
> *
> *

> *
>
>
> 2014-07-03 16:03 GMT-03:00 Jason Glazer jglazer@xxxxxxxx
> <mailto:jglazer@xxxxxxxx> [EnergyPlus_Support]
> <EnergyPlus_Support@xxxxxxxxxxxxxxx
> <mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx>>:
>
> __

>
> Remember that the Demand End Use Components Summary is the
> power use for each end use component at the specific "time
> of peak" shown at the top of the table when the peak demand
> for the entire building for that energy was set. Exterior
> lighting for example would probably not be part of the peak
> electrical demand because it occurs at night and the
> peak is
> probably set during the day. The same goes for heating and
> cooling depending on the timing of the peak demand for the
> building.
>
> Jason
>
> On 7/3/2014 12:20 PM, Jim Dirkes
>
> jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx
> <mailto:jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx>

> [EnergyPlus_Support] wrote:
> >
> >
> > I think I have seen this when the kW value is less
> than 0.5.
> > I think some rounding occurs in the report creation. Does
> > that apply for your system?
> >
> > *James V Dirkes II, PE, BEMP, LEED AP**
> > **www.buildingperformanceteam.com
> <http://www.buildingperformanceteam.com>*

> > <http://www.buildingperformanceteam.com/>*
> > **Energy Analysis, Commissioning & Training Services**
> > *1631 Acacia Drive, Grand Rapids, MI 49504USA
> > 616 450 8653
> >
> > *From:*EnergyPlus_Support@xxxxxxxxxxxxxxx
> <mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx>
> > [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx

> <mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx>]
> > *Sent:* Thursday, July 03, 2014 1:01 PM
> > *To:* EnergyPlus_Support@xxxxxxxxxxxxxxx
> <mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx>

> > *Subject:* [EnergyPlus_Support] Summary reports problem -
>
> > Demand end-use is 0 W, while energy end-use is not 0kWh
> >
> > Dear group,
> >
> > Has anyone encountered this problem before? The summary
> > report shows 0 W in the *Demand End Use Components
> Summary
> > table, *while still having energy reported for that
> end-use
>
> > not 0?
> >
> > This happened in different projects and for different
> > end-use categories, eg. this case *Exterior
> lightin*g, or on
> > another project *cooling and heating*.
>
> >
> > Any thoughts on what might be the problem?
> >
> > Regards,
> >
> > Santiago
> >
> >
> >
> >
>
>
>
>
>