Computerized Thermal Conductivity of Solids by Guarded Hot Plate Method

Description

This equipment allows students to determine the thermal conductivity of a poor conducting material, like asbestos sheet by guarded hot plate method. The test specimen is placed on a flat plate heater assembly consisting of an electrically heated inner plate (main heater) surrounded by a guard heater. The guard heater is carefully controlled to maintain the same temperature on both sides of the gap separating the main and the guard heaters. This prevents lateral heat flow from the main heater and ensures that all heat energy flows in the direction of the specimen. On the opposite side of the specimen are additional flat plate heaters (the "cold" plate) that are controlled at a fixed temperature selected by the operator. For a given heat input to the main heater, the hot plate assembly rises in temperature until the system reaches equilibrium. The final hot plate temperature depends on the electrical power input, the thermal resistance of the specimen, and the temperature of the cold plate. The average thermal conductivity, k, of the specimen is determined from the Fourier heat flow equation.

Experiments you can perform

1. Determine thermal conductivity of Solids

Features

• Extensive range of Experiments
• Comprehensive teaching manual
• Three-year warranty
• Aesthetically designed and finished Rig
• High Quality instrumentation