Description

The Armfield Radial Heat Conduction accessories have been designed to demonstrate the application of the Fourier rate equation to simple steady-state conduction radially through the wall of a tube.

Hardware Description

The arrangement, using a solid metal disk with temperature measurements at different radii and heat flow radially outward from the centre to the periphery, enables the temperature distribution and flow of heat by radial conduction to be investigated.

On the HT12C the heater power and the cooling water flow rate are controlled via the HT10XC, either from the front panel or from the computer software. On the HT12 these are controlled manually.

•  The accessory comprises a solid disk of material, which is heated at the centre and cooled at the periphery to create a radial temperature difference with corresponding radial flow of heat by conduction.
•  Six K-type thermocouples are positioned at different radii in the heated disk to indicate the temperature gradient from the central heated core to the periphery of the disk.
•  The radial distance between each thermocouple in the disk is 10mm.
•  Quick-release connections facilitate rapid connection of the cooling tube to a cold water supply. A pressure regulator is incorporated to minimise the effect of fluctuations in the supply pressure.
•  A control valve permits the flow of cooling water to be varied, if required, over the operating range of 0-1.5 l/min.
•  The cooling water flow rate is measured by a turbine type flow sensor (HT12C only).
•  An optional cooling water flow rate sensor “SFT2” is available upon request for the HT12 connecting directly into the HT10XC service unit.