Description:
The accessory comprises a heating section and a cooling section, which can be clamped together or clamped with interchangeable intermediate sections between them, as required. The temperature difference created by the application of heat to one end of the resulting wall and cooling at the other end results in the flow of heat linearly through the wall by conduction.
Thermocouples are positioned along both the heated section and cooled section at uniform intervals of 15mm to measure the temperature gradient along the sections
Heater can be voltage or PID controlled allowing for the temperature set-point to be achieved rapidly and maintained within 0.1°C
Experimental Capability:
- Understanding the use of the Fourier rate equation in determining rate of heat flow through solid materials
- Measuring the temperature distribution for steady-state conduction of energy through a uniform plane wall and a composite plane wall
- Overall heat transfer coefficient for differing materials in series
- Determining the constant of proportionality (thermal conductivity k) of different materials (conductors and insulators)
- Relationship of temperature gradient to cross-sectional area
- Effect of contact resistance on thermal conduction
- Understanding the application of poor conductors (insulators)
- Observing unsteady-state conduction (qualitative only)
Technical Specification:
- A small-scale accessory to introduce students to the principles of linear heat conduction, and to enable the conductivity of various solid conductors and insulators to be measured.
- Comprises a PID controlled heating section and cooling section, plus four intermediate section conductor samples and two insulator samples
- The heating section, cooling section and one of the intermediate sections are fitted with thermocouples (eight in total) evenly spread along the length of the assembled conduction path
- All sections are thermally insulated to minimise errors due to heat loss
- Heater power variable up to 60W
- Water flow rate variable up to 1.5 l/min
- Heating and cooling sections, 25mm diameter
- A comprehensive instruction manual is included
