The right-side test tank is similar to construction to the left-side one. An air flow generated by a compressor flows through it.

Manometers are mounted on both test tanks to measure the pressure loss. The flow rates are adjusted by way of valves, and can be read from flow meters. The test tanks are removable. This makes it easy to change the bulk solid filling.

A diaphragm pump delivers water from a storage tank into the bottom of the left side test tank. The water flows upwards through a porous sintered-metal plate. On the sintered At the time of the water is less than the so-called fluidisation velocity, the flow only passes through the fixed bed. Transport is only possible with the experimental unit. A filter at the top of the test tank holds these particles back. Water flows back into the storage tank. At higher velocities the bed is loosened to such an extent that individual solid particles are suspended By the fluid. If the velocity is increased further, particles are carried out of the fluidised bed: transport takes place. 

Glass-shot beads in a range of particle sizes are provided as the bulk solid filling.

Specification:

Investigation of fluidised bed formation of solids in air and water

Both test tanks removable for filling

Storage tank with diaphragm pump for water supply

Adjustment of flow rate for both media by valves and flow meter

2 transparent test tanks to observe fluidised bed formation in air/water

1 manometer per tank to measure the pressure loss through each test tank

1 steel rule per tank to measure the change in height of the fluidised beds

Diaphragm compressor with compressed air accumulator for compressed air supply

Technical data:

Tanks

Water storage tank: approx. 4L

Compressed air accumulator: 2L

Diaphragm pump (water)

Max. flow rate: 1,7L/min

Max. head: 70m

Diaphragm compressor (air)

Max. volumetric flow rate: 39L/min

Max. pressure: 2bar

2 test tanks

Length: 550mm

Inside diameter: 44mm

Scale division: 1mm

Material: PMMA

Measuring ranges

Pressure: 0…500mmWC (water)

Pressure: 0…200mmWC (air)

Flow rate: 0,2…2,2L/min (water)

Flow rate: 4…32L/min (air)

Height: 0…500mm

230V, 50Hz, 1 phase

230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase.