Unformatted text preview: system. The desired room
temperature is set by manual adjustment of a potentiometer. The room temperature is sensed
via a thermocouple and compared with the desired temperature. The error between the desired
and actual value is send to the controller, and the controller sends a control signal to the
solenoid valve which produces a linear movement of the valve spool, thus adjusting the hot
water flow rate to the radiator.
Heat Loss Potentiometer
Temperature Controller Solenoid
Valve Heat Input
Thermocouple Hot Water Measured Temperature •
• Identify the basic elements of the system; reference input, output, controller, plant,
actuator, sensor, disturb...
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- Spring '11
- Mechanical Engineering, Hakan ÇALIŞKAN