A small-scale accessory designed to demonstrate combined convection (free and forced) and radiation from a horizontal heated cylinder. It consists of a centrifugal fan with vertical outlet duct at the top of which is mounted the heated cylinder.
K-type thermocouples measure the air temperature upstream and the surface temperature of the cylinder.
The air flow rate is measured by a vane type anemometer in the outlet duct.
The air flow is manually adjustable
The accessory is mounted on a PVC baseplate which is designed to stand on the bench top and connect to the Heat Transfer Service Unit without the need for tools.
The air flow is electronically adjustable over the range 0 - 7 m/s by an variable speed fan.
Comprises a heated cylinder mounted in a vertical air duct, with a fan at the base of the duct which can be used to provide a variable air flow over the cylinder.
Heater rating 100 Watt at 24V DC.
Electrically heated metal cylinder in the pressure vessel as experimental vessel
Temperature-controlled heating element
Heat transfer between heating element and vessel wall by convection and radiation
Vacuum generation with rotary vane pump
Instrumentation: 1 temperature sensor at the vessel wall, 1 power sensor at the heating element, 1 Pirani pressure sensor, 1 piezo-resistive pressure sensor
Operation with various gases possible
Experiments in vacuum or at a slight positive gauge pressure.
