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ME5511 Building Management And Control Systems

tag 1 Download 6 Pages / 1,430 Words tag 01-06-2021
  • Course Code: ME5511
  • University: Brunel University London
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  • Country: United Kingdom

Question:

A proportional feedback controller is added to the heating system. This controller measures the room temperature error and provides the control signal to the LPHW flow rate final control device. Draw the complete closed?loop block diagram for the room heating system using the data from IX3.1 and PF1.4.  

Derive the closed?loop transfer function relating the outside air temperature to the inside air temperature, and the characteristic equation for this closed?loop system.  

If oscillation is to be avoided, what is the maximum value of the proportional constant?  

If the value of proportional constant calculated in 2.3 is used, what is the steady?state error in the room temperature when the outside  

Comment on the acceptability of the value calculated in 2.4, and suggest means of improving the control system.

A PID controller is used to replace the proportional feedback controller, derive the closed? loop transfer function relating the outside air temperature to the inside air temperature, and the characteristic equation for this closed?loop system..

What would be the effect of the transport delay between the radiator and room air temperature sensor?

Interaction has been implicitly ignored by assuming that the heat output from the radiator is not affected by the room temperature. Comment on whether this assumption is reasonable, and its effect on the controller design.  

Infiltration heat loss has not been considered. Suggest how this might be added to the system block diagram and comment on its effect on the room temperature control.  

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[Accessed 29 November 2022].

My Assignment Help. 'Building Management And Control Systems' (My Assignment Help, 2021) <https://myassignmenthelp.com/free-samples/me5511-building-management-and-control-systems/msc-in-building-services-engineering.html> accessed 29 November 2022.

My Assignment Help. Building Management And Control Systems [Internet]. My Assignment Help. 2021 [cited 29 November 2022]. Available from: https://myassignmenthelp.com/free-samples/me5511-building-management-and-control-systems/msc-in-building-services-engineering.html.


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