[esp-r] Re: Control of a plant component

[Geissler Achim]

Hi Bernd,

 

maybe I could help a little bit (although I am not quite sure what you mean with “variable controller” vs. “constant mass flow” as the mass flow would be controlled), but please first state your affiliation.

 

Regards,

Achim

 

 

________________________________

From: esp-r-bounces at lists.strath.ac.uk [mailto:esp-r-bounces at lists.strath.ac.uk] On Behalf Of Bernd B.
Sent: Thursday, August 21, 2008 10:05 AM
To: esp-r at lists.strath.ac.uk
Subject: [esp-r] Control of a plant component

 

Dear all, 

I have a question concerning the control of a plant component: 
I would like to control the mass flow of a pump (type 15, variable speed domestic WCH pump) according to a temperature difference between two plant components. 
I know how to do that with a constant mass flow of the pump. However I want to use variable mass flow. Somehow I cannot combine a  *variable controller* with the *controller type "temperature difference*"! 
In my view it's not possible to do that with a usual control function. Does anyone know how to get that done? 

Thanks! 
Best regards 
Bernd 


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