Home           Products           Company           Contact us     
Theory of Machines and Properties of Materials
Mechatronics
Thermodynamics, Heating and Sanitary Systems
> Fundamentals of Thermodynamics
> Applied Thermodynamics
> Power Engines and Machines
> Internal Combustion Engines
> Refrigeration and Air Conditioning
> Heating and Ventilation
> Sanitary Systems
Fluid Mechanics and Hydrology
Process Control and Process Engineering
Overviews
Products  |  Thermodynamics, Heating and Sanitary Systems  |  Applied Thermodynamics  |  WL 225
WL 225 Fluidisation and Heat Transfer Show data sheet (pdf file) Print page
Technical Description
A fluidised bed is formed when a mass of particles is suspended by passing gas through them. The thermodynamic and fluid mechanical properties of the solid take on the character of a fluid. The heat transfer from a heated cylinder to the fluidised bed can be investigated using the benchtop unit. The glass measuring cylinder with background lighting enables the fluid bed and the fluidisation process to be very clearly observed. A heating element that can be lowered into the reactor enables the transfer of heat in the fluidised bed to be investigated. Temperatures are measured with sensors at the air inlet of the reactor, at the surface of the heating element and in the fluidised bed. A safety valve limits the reactor pressure.
A supply of compressed air is required.  
Learning Objectives / Experiments
- Effect of particle size on fluidisation
- Fluid permeability of fixed and fluidised beds
- Heat transfer in a fluidised bed
  + influence of the amount of air
  + influence of the position of the heater
  + influence of the particle size
- Observation of the fluidisation process
- Pressure curve within the bed
- Pressure required at varying throughputs
- Determination of the loosening velocity
- Observation of the sedimentation processes
Features
* Clear experimental set-up for investigations on the
  transfer of heat in a fluidised bed1
* Illuminated glass reactor for optimal observation of
  the fluidisation1
* Fluidised beds with varying particle size
Alternative products
CE 220 -- Fixed and Fluidised Bed Apparatus
Specification

[1] Experimental set-up for the investigation of the transfer of heat in a fluidised bed
[2] Glass reactor, illuminated from the rear
[3] Fluidised bed made of corundum, particle size either 125µmm or 300µm, volume 1ltr
[4] Adjustable heating element
[5] Temperature sensors at heater, air inlet, in fluidised bed
[6] Air flow rate measurement with rotameter and via measuring orifice
[7] Safety valve, temperature cut-out at heater, air filter at inlet and outlet
[8] 230V, 50Hz, 1 phase or 120V, 60Hz, 1 phase

 
Technical Data

Glass reactor

- capacity: 2.15L

- max. air requirement: 300L/h

- filling amount: approx. 1L

- operating pressure: 0.5bar
 

Heater

- power: 0...140W

- surface: approx. 10cm²
 

Measuring ranges
- temperature air inlet: 0...100°C
- temperature heater / fluidised bed: 0...400°C
- airflow rate (rotameter): 10...124 standard L/h
- airflow rate (orifice): 50...300L/h
- pressure in fluidisd bed: 0...25mbar
- power: 0...600W
- 2 manometers: 0...1.6bar

 
Dimensions and Weight
l x w x h: 900 x 455 x 850 mm
Weight : approx. 65 kg
Connections
230V, 50Hz, 1 phase or 120V, 60Hz, 1 phase
Compressed air connection: min. 2bar
Scope of Delivery

1 experimental set-up, complete

2 bags of particles

1 instruction manual
Order Details
060.22500  WL 225  Fluidisation and Heat Transfer
Print
© 2005 G.U.N.T. Gerätebau GmbH