AFT052 Heat Transfer In The Fluidised Bed Vocational Education Equipment For School Lab Heat Transfer Experiment Equipment
Fluidised beds are used in a broad range of applications, e.g. for industrial drying, fluidised bed combustion or heat treatment of materials. Bulk solids are transformed from a fixed bed into a fluidised bed when fluids pass through them. In terms of fluid mechanical and thermodynamic properties, the fluidised bed behaves like an incompressible fluid.
The heat transfer between hot fluid and a fixed bed occurs mainly through heat conduction. Due to the movement of the particles, the fluid and the particles are very well mixed in the fluidised bed. This enables optimum heat transfer between fluid and particles and ensures an even temperature distribution in the reactor.
1.examination of the fluidised bed formation and the heat transfer in the fluidised bed
2.fluidised bed of compressed air and aluminium oxide, particle sizes either 100µm or 250µm
3.glass reactor, backlit
4.glass reactor with sintered-metal plate at the inlet and air filter at the outlet
5.heating element, submersible and with adjustable power output
6.manual setting of the air flow rate via valve and flow meter
7.sensors with digital displays for temperature at heater, air inlet, in fluidised bed, pressure upstream of the reactor and in the fluidised bed, air flow rate, heating power
8.steel rulers for measuring the immersion depth of the heating element and the height of the fluidised bed
9.safety valve, temperature switch at the heater, air filter at the outlet