G.U.N.T. - Equipment for engineering education

Products | Thermodynamics, Heating and Sanitary Systems | Applied Thermodynamics | WL 225

WL 225

Fluidisation and Heat Transfer

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