TUGAS KELAS P Re
TUGAS KELAS
1. The temperature of an endothermic reactor is controlled by manipulating the flow
rate of steam flowing through a jacket around the reactor.
(a) Using your physical understanding of the process, determine the sign of process
gain Kp.
(b) If the control valve for steam flow be air-to-close, determine whether the
controller is direct acting or reverse acting.
2. Hot water (sp.gr.=1) is pumped through the tube side of a shell and tube heater and
a control valve at a nominal flow rate of 50 m 3/h. The total pressure drop over the
entire system is constant at 1.5 barg. The pressure drop over the heater is proportional
to the square of the flow rate and is 0.5 barg at the nominal flow rate. The control
valve are set so that f(l) = 0.5 at the nominal flow rate. Using control valve with
square root trim specify the value of C v and determine valve position for the flow rate
of 60 m3/h.
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TUGAS KELAS
1. The temperature of an endothermic reactor is controlled by manipulating the flow
rate of steam flowing through a jacket around the reactor.
(a) Using your physical understanding of the process, determine the sign of process
gain Kp.
(b) If the control valve for steam flow be air-to-close, determine whether the
controller is direct acting or reverse acting.
2. Hot water (sp.gr.=1) is pumped through the tube side of a shell and tube heater and
a control valve at a nominal flow rate of 50 m 3/h. The total pressure drop over the
entire system is constant at 1.5 barg. The pressure drop over the heater is proportional
to the square of the flow rate and is 0.5 barg at the nominal flow rate. The control
valve are set so that f(l) = 0.5 at the nominal flow rate. Using control valve with
square root trim specify the value of C v and determine valve position for the flow rate
of 60 m3/h.
1. The temperature of an endothermic reactor is controlled by manipulating the flow
rate of steam flowing through a jacket around the reactor.
(a) Using your physical understanding of the process, determine the sign of process
gain Kp.
(b) If the control valve for steam flow be air-to-close, determine whether the
controller is direct acting or reverse acting.
2. Hot water (sp.gr.=1) is pumped through the tube side of a shell and tube heater and
a control valve at a nominal flow rate of 50 m 3/h. The total pressure drop over the
entire system is constant at 1.5 barg. The pressure drop over the heater is proportional
to the square of the flow rate and is 0.5 barg at the nominal flow rate. The control
valve are set so that f(l) = 0.5 at the nominal flow rate. Using control valve with
square root trim specify the value of C v and determine valve position for the flow rate
of 60 m3/h.
=============================================================
TUGAS KELAS
1. The temperature of an endothermic reactor is controlled by manipulating the flow
rate of steam flowing through a jacket around the reactor.
(a) Using your physical understanding of the process, determine the sign of process
gain Kp.
(b) If the control valve for steam flow be air-to-close, determine whether the
controller is direct acting or reverse acting.
2. Hot water (sp.gr.=1) is pumped through the tube side of a shell and tube heater and
a control valve at a nominal flow rate of 50 m 3/h. The total pressure drop over the
entire system is constant at 1.5 barg. The pressure drop over the heater is proportional
to the square of the flow rate and is 0.5 barg at the nominal flow rate. The control
valve are set so that f(l) = 0.5 at the nominal flow rate. Using control valve with
square root trim specify the value of C v and determine valve position for the flow rate
of 60 m3/h.