H112C Laws of Radiant Heat Transfer/Heat Exchanger

H112C Laws of Radiant Heat Transfer

An accessory designed to experimentally investigate the laws of radiant heat transfer and radiant heat exchange. The application of the laws to both heat and light radiation are demonstrated using a radiant heat source and light source. Two appropriate detectors, light filters, target plates of different Emissivity and aperture plates each mounted on suitable carriages on a parallel graduated track, and allow simple and rapid experimental procedures.

H112C Laws of Radiant Heat Transfer/Heat Exchanger

An accessory designed to experimentally investigate the laws of radiant heat transfer and radiant heat exchange. The application of the laws to both heat and light radiation are demonstrated using a radiant heat source and light source. Two appropriate detectors, light filters, target plates of different Emissivity and aperture plates each mounted on suitable carriages on a parallel graduated track, and allow simple and rapid experimental procedures.

The electrically heated matt black radiant heat source has an effective diameter of 100mm. and is fitted with an integral thermocouple to record its surface temperature. Heat input to the radiant source is controlled and recorded by the H112 Heat Transfer Service Unit.

A radiometer detects the heat flux directly in W/m2 from either the source, a combination of four plates of different Emissivity (two matt black, one grey and one polished) or between a slot formed by two moveable cork faced plates. Each plate of different Emissivity incorporates a surface thermocouple for temperature measurement.

The diffuse light source comprises a low voltage filament lamp within a rotatable enclosure (180º) that can be located on the parallel track in place of the heat source.

A lightmeter recording directly in lux may be located in place of the radiometer in order to measure incident intensity.

Supplied filter plates of varying opacity and thickness can also be mounted on the track to demonstrate the laws of light absorption.

All six thermocouples plug directly into the H112 Heat Transfer Service Unit. The radiometer and light meter plug into an auxiliary console that is integral with the H112C demonstrator.

Both the heat source and light source intensity are controlled through the variable 240v ac supply from the H112 Heat Transfer Service Unit.

Requires the H112 Heat Transfer Service Unit for operation.

  • Inverse square law using the heat source and radiometer or light source and light meter.
  • Stefan Boltzman Law using the heat source and radiometer.
  • Relating the radiation intensity received at the radiometer to that emitted by the source.
  • Emissivity using heat source, metal plates and radiometer.
  • Kirchoff Law using the heat source, metal plates and radiometer.
  • Area factors using the heat source, aperture and radiometer.
  • Lamberts Cosine Law using the light source (rotated) and lightmeter.
  • Lamberts Law of Absorption using the light source, filter plates and lightmeter.