[esp-r] Plant component ideal control

[Dimitrios Sfakianakis]

Dear List,

I am currently modelling an HVAC system with air re-circulation using explicit plant component modelling. The system is comprised by the basic components: mixing box, cooler, heater, fan and ducts. At a first stage I am not concerned with modelling the actual control system for the heater and cooler (a PID controller) and want to use an ideal controller much like the BLC01 ideal controller in  /esrubld/bcfunc.F in order to calculate the power demand of the components.

After going through the available control methodologies for plant components I did not find any controls types that resemble the BLC01. I have tried representing the heater with a thermal zone with an ideal control, connected to the plant network however I notice that if 2 controls are imposed in the same zone, only the second one works.

Is there a plant component controller that can keep the temperature of a component at a certain set point by sensing temperature, activating flux and utilising the required amount of energy? If not what would be the best way to model this in Esp-r?

Thank you for your time.

Kind regards,

Dimitrios Sfakianakis MEng
Research Assistant, Dept. Naval Architecture and Marine Engineering, University of Strathclyde
Kelvin Hydrodynamics Laboratory, Acre Road, Glasgow, G20 0TL
T: +44 (0) 141 330 2648 (Ext 2648)
M: +44 07514271592
E: dimitrios.sfakianakis at strath.ac.uk
The University of Strathclyde is a charitable body, registered in Scotland, with registration number SC015263.