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Re: [EnergyPlus_Support] Shading Control issue
You could use the Schedule:File:Comma object to define the blind
schedule. Open the weather file in a spreadsheet. Insert a new column
for hour of day and initialize to 1 to 24 for all days. Use the IF
command to calculate the hourly schedule value. IF (hour < 9, 1, IF(hour
> 20, 0, IF(OAT < 20, 0,1))). Do this for 8760 hours. Save this
schedule as comma delimited to create the Schedule:File:Comma object.
What this hourly schedule can not do is interpolate the weather data to
turn the blinds on/off at intervals less than 60 minutes.
Nuno Costa Brandão wrote:
>
> Hi All,
>
> Just poping this back, hoping that someone gives me some guidance help
>
> Thanks
> Nuno
> ---------------------------------------
> Dear All,
>
> I´m simulating a building with shading(exterior blinds) in its windows.
> The shading control should be as follows:
>
> from 0 to 8h: shading is always on
> from 8h to 21h: shading is on if outside air temperature exceeds 20ºC
> and its off if outside air temperature is less than 20 ºC
> from 21hto 24h: shading is always off
>
> The best approach I could obtain was to define a schedule control
> always equal to 1(meaning that the shading is always on for the 24h)
> and a control setpoint of 20ºC, with the "OnIfHighOutsideAirTemp"
> control, which would override the schedule everytime the out side air
> temp is less then 20ºC. This resulted in a higher costs because
> supplemental heating is needed for the times where the shading is
> always on.
>
> Is there any other alternative to precisely simulate the control
> previously described above?
>
> Thanks for the help
> Nuno
>
>
--
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
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