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7ERT 422/4ERT 422/4
Piping and instrumentation Piping and instrumentation diagram (P&id)diagram (P&id)
MISS. RAHIMAH BINTI OTHMAN(Email: [email protected])
Which of the following statements are true?
(a)Feedback and feedforward control both require measured variable.
(b)The process variable to be controlled is measured in feedback control.
(c)Feedforward control can be perfect in the theoretical sense that the controller can take action via the manipulated even while the controlled variable remains equal to its desired value.
(d)Feedforward control can provide perfect control; that is, the output can be kept at its desired value, even with an imperfect process model.
(e)Feedback control will always take action regardless of the accuracy of any process model that was used to design it and the source of a disturbance.
QUIZ1
False/True
False/True
False/True
False/True
False/True
QUESTION 1:
QUIZ1
QUESTION 3:
Figure below shows the boiler system that used to supply hot steam to a turbine. This system need to supply 100 psi hot steam to the turbine where the PCV-100 will be opened when the pressure reached that desired pressure. With using pressure control through temperature measurement in the boiler, draw a feedforward loop control system.
BOILER
Process variable need to be controlled = Pressure
Water Hot steam
PCV-100
PIPING AND INSTRUMENTATION DIAGRAM (P&ID)
Which of the following statements are true?
(a)Feedback and feedforward control both require measured variable.
(b)The process variable to be controlled is measured in feedback control.
(c)Feedforward control can be perfect in the theoretical sense that the controller can take action via the manipulated even while the controlled variable remains equal to its desired value.
(d)Feedforward control can provide perfect control; that is, the output can be kept at its desired value, even with an imperfect process model.
(e)Feedback control will always take action regardless of the accuracy of any process model that was used to design it and the source of a disturbance.
QUIZ1
False/True
False/True
False/True
False/True
False/True
QUESTION 1:
Answer 1:
Batch distillation
Reactor
Distillate product tank
Acid feed tank
Ethanol-water mixture
Cold water in
Hot water out
Ethanol liq.
Ethyl acetate
Condenser
The Block Flow Diagram (BFD)
Answer 1 Figure below shows the boiler system that used to supply hot steam to a turbine.
This system need to supply 100 psi hot steam to the turbine where the PCV-100 will be opened when the pressure reached that desired pressure. With using pressure control through temperature measurement in the boiler, draw a feedforward loop control system.
BOILER
TT
Process variable need to be controlled = Pressure
TIC Y
Water Hot steam
PI
PIPING AND INSTRUMENTATION DIAGRAM (P&ID)