ASR3026 Convection and Radiation educational equipment for schools Heat Transfer Didactic Equipment
The unit shall perform the following experiments and investigations:
Learning Objectives / Experiments
experiments in vacuum
heat transfer by radiation
determination of the radiation coefficient
experiments at ambient pressure or positive gauge pressure
heat transfer by convection and radiation
determination of the heat quantity transferred by convection
determination of the heat transfer coefficient based on measured values
theoretical determination of the heat transfer coefficient based on the Nusselt number
comparison of the heat transfer in different gases
Specification
[1]heat transfer between heated metal cylinder and vessel wall by convection and radiation
[2]operation with various gases possible
[3]experiments in vacuum or at a slight positive gauge pressure
[4]electrically heated metal cylinder in the pressure vessel as experimental vessel
[5]temperature-controlled heating element
[6]vacuum generation with rotary vane pump
[7]instrumentation:
1 temperature sensor on the metal cylinder, 1 power sensor at the heating element,
1 Pirani pressure sensor,
1 piezo-resistive pressure sensor
[8]digital displays for temperature, pressure and heating power
Technical Data Heating element
output: 20W
radiation surface area: approx. 61cm²
Pressure vessel
pressure: -1…1,5bar
volume: 11L
Pump for vacuum generation
power consumption: 250W
nominal suction capacity: 5m³/h
final pressure with gas ballast: 3-10^-3^mbar
final pressure without gas ballast: 3-10^-3^mbar Measuring ranges
negative pressure: 0,5-10^-3^…1000mbar
pressure: -1…1,5bar rel.
temperature: 0…250°C
power: 0…23W
Dimensions and Weight LxWxH: 1340x790x1500mm
Weight: approx. 160kg
Material of construction: stainless steel
