controlling temperature of hot
Post on 22-Jan-2018
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By
S.Kaviyarasan
The system is designed to be controlling the O/P water temperature of a missing value fed by two reservoir
output temperature is measured by thermistor voltage of Thermistor is utilized as analog input to data acquaintance cards.
Value controlled by 0 to 5 volt – O/P.
PID control system with feedbackcontroller for shell and tube heat exchanger.
Principle:
The systems temperature is maintained by manipulating the flow of hot water in the stream of cold water.
Control valve capacity 1.6kg/sec Exchanger response to vapor 50’C/(kg/sec)Control valve time constant 3sec Process time constant 30 secsensor temperature50-150Drive current range 4-0 mA
Sensor time constant 10 sec Drive pressure range 3-15psig
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