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Re: [EnergyPlus_Support] Re: A question about Supply Fan.
The periods of time that both heating and cooling are active should be
small. So what I would do is to use the spreadsheet and create new
columns for fan energy. One for Cooling Fan Energy and one for Heating
Fan Energy. In the Cooling Fan Energy Column, use an IF statement to
place the original fan energy in the new Cooling Fan Energy column if
the heating energy is 0. Same for the new Heating Fan Energy Column. If
they are both greater than 0 you would have to proportion the fan energy
accordingly.
Let's say your spreadsheet looked like this:
A2 Heating Energy
B2 Cooling Energy
C2 Fan Energy
D2 New Heating Fan Energy
E2 New Cooling Fan Energy
The IF statements would then look like this for the new Heating Fan
Energy column (D2):
+IF(B2=0,C2,C2*(A2/(A2+B2)))
The IF statements would then look like this for the new Cooling Fan
Energy column (E2):
+IF(A2=0,C2,C2*(B2/(A2+B2)))
You could then sum the new columns.
xjtu.guowei wrote:
> Thank you very much for your reply.
>
> But sometimes during the period of time step, both the heating and
> cooling are greater than zero. So it is hard to use spreadsheet to sum
> heating and cooling separately.
>
> And if we use the detailed reports, the data file will be very large,
> EXCEL cannot load completely.
>
> Would you like to give some help about that? Thank you very much.
>
> Wei
>
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx
> <mailto:EnergyPlus_Support%40yahoogroups.com>, Richard Raustad
> <RRaustad@...> wrote:
> >
> > If you want to know how much fan energy is consumed in cooling mode and
> > how much fan energy is consumed in heating mode, then you will have to
> > use a spreadsheet to perform the calculations. Report the fan, cooling
> > and heating energy. Then in the spreadsheet, sum the fan energy when
> > cooling energy is greater than 0. Do the same for the fan when heating
> > energy is greater than 0.
> >
> > Richard Raustad wrote:
> >
> > > Use the Fan Electric Power and Fan Electric Consumption report
> > > variables. These variables are described in the InputOutputReference
> > > document for the Fan:Simple:OnOff object.
> > >
> > > xjtu.guowei wrote:
> > >
> > > > Dear All:
> > > >
> > > > I am doing a building simulation in which the compact HVAC is used.
> > > > There is a field which is supply fan operation mode. I have
> chosen the
> > > > cycling in stead of continuous. You know the fan will be working
> when
> > > > either cooling or heating needs to be supplied to the zone.
> > > >
> > > > I would like to know how much of the power consumed by the
> supply fan
> > > > is combining with the cooling or heating separately not totally.
> > > >
> > > > Thank you very much.
> > > >
> > > > wei
> > > >
> > > >
> > >
> > > --
> > > Richard A. Raustad
> > > Senior Research Engineer
> > > Florida Solar Energy Center
> > > University of Central Florida
> > > 1679 Clearlake Road
> > > Cocoa, FL 32922-5703
> > > Phone: (321) 638-1454
> > > Fax: (321) 638-1439 or 1010
> > > Visit our web site at: http://www.fsec.ucf.edu
> <http://www.fsec.ucf.edu>
> <http://www.fsec.ucf.edu <http://www.fsec.ucf.edu>>
> > >
> > > UCF - From Promise to Prominence: Celebrating 40 Years
> > >
> > > [Non-text portions of this message have been removed]
> > >
> > >
> >
> >
> > --
> > Richard A. Raustad
> > Senior Research Engineer
> > Florida Solar Energy Center
> > University of Central Florida
> > 1679 Clearlake Road
> > Cocoa, FL 32922-5703
> > Phone: (321) 638-1454
> > Fax: (321) 638-1439 or 1010
> > Visit our web site at: http://www.fsec.ucf.edu <http://www.fsec.ucf.edu>
> >
> > UCF - From Promise to Prominence: Celebrating 40 Years
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>
--
Richard A. Raustad
Senior Research Engineer
Florida Solar Energy Center
University of Central Florida
1679 Clearlake Road
Cocoa, FL 32922-5703
Phone: (321) 638-1454
Fax: (321) 638-1439 or 1010
Visit our web site at: http://www.fsec.ucf.edu
UCF - From Promise to Prominence: Celebrating 40 Years
[Non-text portions of this message have been removed]
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