The Armfield Linear Heat Conduction test apparatus has been designed to demonstrate the application of the Fourier Rate equation to simple steady-state conduction in one dimension.  The apparatus can be configured as a simple plane wall of uniform material and constant cross sectional area or composite plane walls with different materials or changes in cross sectional area to allow the principles of heat flow by linear conduction to be investigated. Measurement of the heat flow and temperature gradient allows the thermal conductivity of the material to be calculated.  The design allows the conductivity of thin samples of insulating material to be determined.

P20 Linear Heat conduction unit

Image courtesy of Armfield

Applications:
Determine the thermal conductivity for different materials.

Technical Specification:
The unit is supplied with a 60W variable heater and cooling is provided via cooling water available in the laboratory.Temperature changes are sensed using K-type thermocouples each one positioned 20mm from its neighbour.