Re: [TRNSYS-users] Request

[Adrien JEZEQUEL <a.jezequel@itf.biz>]

Dear Samuel,

If you see the example concerning the use of PID, you will see that the 
PID output 1 ('control signal') is defined as an energy (in kJ/hr) used 
to heat or cool the building. So I think that you have to adapt the PID 
output with an equation to obtain a fluid flow rate.

I think that tPiD only give the energy rate necessary to maintain the 
controled variable at  the setpoint.

Maybe you can have a look at this example in "feedback control" to see 
how are used PID.

I am not really sure of what I say, so if someone is able to confirm or 
to cancel what I said, he's welcome...

Best regards,

Adrien

Samuele a écrit :
> Dear all,
>  
> I'm trying to build a model in which there are a variable speed pump 
> and a linear parabolic concentrator: I'm using a pid controller to 
> regulate the inlet flowrate for the liner parabolic concentrator 
> because I need that the outlet temperature from the concentrator is 
> costant ( 280°C).
>  
> I have seen the result but I don't know if it's working well. There is 
> the file.tpf enclosed.
>  
> Could anybody tell me if anything is wrong?
>  
> Thanks in advance.
>                               
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Adrien JEZEQUEL	
Ingénieur en Simulations Dynamiques
ITF (Ingénierie Tous Fluides)
87, route de Chambéry
73230 ST ALBAN EN LEYSSE
FRANCE
Tel: 04.79.75.00.29
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Mail : a.jezequel@itf.biz