Linear heat conduction experiment_pdf.pdf - Linear Heat Conduction Objectives This experiment aims to determine the thermal conductivity of different

Linear heat conduction experiment_pdf.pdf - Linear Heat...

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1 Linear Heat Conduction Objectives: This experiment aims to determine the thermal conductivity of different materials and to learn about linear conduction heat transfer. Theory: When a temperature gradient exists in a body, an energy transfer from high temperature region to low temperature region takes place. It is said that the energy is transferred by conduction and the heat transfer rate per unit area is proportional to the temperature gradient. (1) Where: The heat transfer rate [W]. : The temperature gradient in the direction of heat flow. Equation (1) can be represented mathematically in the form: (2) Where is the thermal conductivity of the material. [W/m.k]. Apparatus: The apparatus is a compact bench-mounting frame that connects to a suitable electrical supply and a cold water supply and drain. The unit shows how heat conducts along a solid brass bar of uniform cross section. It has an elec trical heater at one end to generate heat energy (the ‘heat source’) and a small chamber at the other end (the ‘heat sink’). The cold water supply from the base unit flows through the heat sink to remove the heat energy, and there is a hand-operated valve in the water circuit that allows the user to control its flow.
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