A compact unit designed for the direct measurement of the thermal conductivity of a wide range of liquid and gases. This is an aspect of heat transfer studies that is often overlooked but of crucial importance in the prediction of heat exchanger performance.
The simple calibration procedure enables the effect of incidental heat transfer to be determined and the unit is supplied complete with a console for the control and display of temperatures and heat input. The unit is complementary to the Thermal Conductivity of Building and Insulating Materials Unit.
A small scale bench top accessory designed to allow experimental investigation of the thermal conductivity of liquids and gases. The unit is designed specifically for teaching purposes.
The unit comprises a heated plug and water cooled jacket with a small radial clearance in which gas or liquid samples may be tested. The thin laminar film prevents natural convection in the fluid under test.
The temperatures either side of the sample under test are recorded by integral thermocouple sensors.
The unit is calibrated using air, in order to account for incidental heat losses and is suitable for determining the thermal conductivity of viscous non-corrosive liquids such as oils, glycerine etc. and non-flammable gases.
The unit may be readily dismantled for cleaning and is re-assembled with a single bolt and replaceable O ring seals.
Heat input is both measured and controlled by the H112 Heat Transfer Service Unit which also provides instrumentation for measurement of the temperatures on either side of the sample under test.
Requires the H112 Heat Transfer Service Unit for operation.