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Re: [EnergyPlus_Support] Re: Energy and Electricity outputs
That depends on the particular system type. Chillers have a report
variable for COP. For other equipment types, you need to report the
load and energy use and calculate COP. Look in the RDD output file
for a complete list of available report variables for your run.
Mike
On 7 Oct 2003, at 9:16, itamargoldberger wrote:
> Michael Hi !
> I want to find the COP of The systems in my file.
> As you know, The COP is changing with the enviromant and inside
> demand temperatures .
> All I wanted is an output telling me what was the load on the HVAC
> system for cooling/heating and how much electricity it demanded. All
> the output report variables I found were the energy devided by the
> time ( for example : x [j] for hourly energy and x/3600 [W] for that
> hour electricity demand . how can I get the COP from those details ?
>
> Thanks
>
> Eng. Itamar G.
> NBRI Technion
>
>
>
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Michael J. Witte"
> <mjwitte@g...> wrote:
> > I am not sure if I understand your question completely. Total
> > electric consumption [J] for the building and systems is available
> > from:
> >
> > Report Meter,
> > Electricity:Facility, !- Meter_Name
> > hourly; !- Reporting_Frequency
> >
> > By dividing this result by the length of the reporting period, this
> > can also be used to represent demand.
> >
> > Or if you add an ELECTRIC LOAD CENTER:DISTRIBUTION object, then you
> > can report electric demand [W] as a report variable:
> >
> > Report Variable,
> > *, !- Key_Value
> > Total Electric Demand, !- Variable_Name
> > Hourly!- Reporting_Frequency
> >
> > See the Input Output Reference, p. 702-704 and example file
> > Generators.idf
> >
> > Mike
> >
> >
> >
> > On 1 Oct 2003, at 11:08, itamargoldberger wrote:
> >
> > > Which output meter or variables do I need to ask in order to
> compare
> > > energy [J] and Electricity [W] at the same timestep ? Thanks
> > >
> >
> >
> >
> > ========================================================
> > Michael J. Witte, GARD Analytics, Inc.
> > EnergyPlus Testing and Support
> > EnergyPlus-Support@g...
>
>
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========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support
EnergyPlus-Support@xxxxxxxx
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