An electrically heated pressure vessel is mounted on the panel of the trainer. The vessel can be filled via different pipe sections. One pipe section is equipped with a system of safety devices for protecting a sealed water heater. The pressure vessel is also equipped with a thermal discharge safety device that discharges to a blow-off pipe.
When the pressure or temperature level set is exceeded, the safety devices are tripped. Pressure and temperature in the system are displayed.
Learning Objectives / Experiments
Function of safety valves
Function and layout of a system of safety devices
Function of a thermal discharge safety device
Specification
Trainer on heating systems and plumbing
Pressure vessel
Threaded heater element with switch cabinet
2 spring tube manometers
1 bimetallic dial thermometer
Thermal discharge safety device
1 system of safety devices with pressure reducing valve, shut-off valve, test connections and non-return valve, manometer connection and safety valve
2 blow-off lines, 1 filler pipe, 1 drain
Technical Data
Pressure vessel made of steel (1.4541)
volume: approx. 5L
Max. operating pressure: 7,8bar
Threaded heater element
Power: 3kW
Protective system: IP 65
Thermal discharge safety device: actuated at 95°C
Setting range of pressure reducing valve: 1,5...6bar