Question

Dynamics and process control question

Design a controller for the loop-pro case study for the Cascaded Superheater (under Utility Case Studies) Include a 2-page memo with a block diagram for the process, a description of how you tuned it, and describe how it performs in setpoint tracking and disturbance rejection.

Answer 1

• perfectly mixed cstr is taken

• negligible heat loss to the surrounding

• volume of cooling water in the rejected jacket is assumed to be constant

• thermal resistance of the metal walls is assumed negligible

• mass of the metal wall is assumed negligible so thermal insultive the metal is need not to be considered

• it is really a good assumption because CP of steel is just. 0.1 BTU which is an order of magnitude lower than that of water

• heat transfer area is constant

• Coefficient is assumed to be constant