The equipment consists of an insulating powder
enclosed within a hollow space formed by two concentric spheres. A mica heater
is placed inside the inner sphere, and the input to the heater can be adjusted
using a dimmer stat. Temperature differences between the inner and outer
spheres are measured by sensors attached to their surfaces. This setup allows
for the determination of the conductivity of the insulating powder.
Experimental Objective
After this experiment student will able to understand how to
determine the thermal conductivity of given insulating powder.
To determine the thermal conductivity of insulating powder
Specifications
Inner sphere diameter: 100 mm;
outer sphere diameter: 200 mm.
Mica heater for heating the inner sphere surface.
Ten thermocouple tappings located in the test section.
Test section filled with Plaster of Paris or asbestos powder as insulation.
Control panel includes:
Utilities required other than above supply
220V stabilized single phase supply
Floor surface 1m x 0.5m at working height
