[TRNSYS-users] control function for shading system

[Damien Gondre]

Hi Rana,

You can:

- define your external shading factor as an input of type 56 (let's say
"ESF1")

- create an equation box in the simulation studio (Assembly > insert new
equation).

- define in the equation box an input (IB_X) linked to the beam radiation
value (weather data reader -> Type 99 or 109)

- define an output as : *ESF1_value = ge(IB_X,972)* (because 270 W/m² = 972
kJ/h.m²)
-> it is equivalent to say "*if IB_X >= 270 W/m² then ESF1_value =
1 else ESF1_value = 0*"


- link this output ("ESF1_value") to the type56 input ("ESF1")


Regards,

Damien.


On Wed, Nov 23, 2011 at 4:08 PM, Rana Mohsen <r.mohsen at live.com> wrote:

>  Hi all,
>
> i am having a building with internal and external shading system. the
> external shading system is on when it the irradiation on window reaches
> 270w/m2 or more, and  if it is less it went off. and i want to put this in
> the simulation by using a control function and connect it to my input,,, so
> which control function could be used is it type 2d or the PID controler
> type 23..
> and if it is in the 2d, how to put this number.
>
> *Best Regards*,
>   * **I*NG*.*| *R*ana Hanafy
>  Master Student
>  Hochschule für TechniK Stuttgart
>  Tübingerstraße 93,
>  70178 Stuttgart, Germany
>   0049-176-59730029
>
>
> _______________________________________________
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>
>
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