EKC 394 Chemical Engineering Lab II: Thermal Conductivity of Insulating Powders

Thermal Conductivity of Insulating Powders Experiment

• The main objective of the experiment is to determine the thermal conductivity of insulating powders.

Thermal Conductivity of Insulating Powders Unit

• The unit consists of multiple test modules.
• Each test module has a heating source, which is an electric heater.

Fabrication and Instrumentation

• The test modules are fabricated using a stainless steel outer cylinder and a smaller inner cylinder.
• The instrumentation provided allows for the measurement and control of temperature and power during the experiment.

Control Panel and Power Transducer

• The power control circuit's electrical output ranges from 0 to 10 volts.
• The control panel item 'Power transducer' measures the power supplied to the heater.
• The voltage range for the power transducer in the control panel is 0 to 10 volts.
• The maximum power in the control panel is set using a potentiometer.

Thermocouples and Thermal Insulators

• Thermocouples have a sheath made of stainless steel.
• The built-in thermocouple in the heater measures the temperature of the heater.
• Thermal insulators are materials that have low thermal conductivity, such as powders, fibers, and foams.
• The conductivity of a material determines its ability to conduct heat.
• The main purpose of using thermal insulators is to reduce heat transfer between objects.

Dimensions of the Test Module

• The outer cylinder of the test module has a diameter of 70 mm and a height of 120 mm.