Manufactured by Atto Labware

The Emissivity Measurement Apparatus is designed to determine the emissivity of test surfaces under controlled heating and cooling conditions. This trainer allows students to study the effect of surface properties, material finish, and temperature on radiation heat transfer.

Educational Objectives

• Understand the concept of emissivity in thermal radiation.

• Measure emissivity of different surface finishes and materials.

• Study the relationship between temperature and radiation heat transfer.

• Verify Stefan-Boltzmann law experimentally.

Performance Measurement

• Temperature measurement of test surfaces at steady state.

• Heat input control and monitoring.

• Comparison of experimental and theoretical emissivity values.

• Analysis of surface finish effect on radiation heat transfer.

Panel and Instruments

• Test specimens with different surface finishes (black, polished, matte, etc.).

• Electric heating element with power controller.

• Thermocouples embedded in specimens.

• Digital temperature indicator.

• Voltmeter and ammeter for input measurement.

• Insulated test chamber with safety guard.