Emissivity Natural Convection And Radiation

Emissivity Natural Convection And Radiation

•    The Natural Convection and Radiation equipment allows the study of heat transfer at different pressures and vacuum. It shows the differences between radiation and natural 'free' convection.
•    A small heated element hangs in the centre of a pressure vessel.
•    Students can extrapolate the results down to a total vacuum (no convection).
•    This allows them to isolate the heat transfer by radiation.
•    The heater has a matt black surface.
•    Attached to its surface is a thermocouple to measure the temperature.
•    The vessel’s inside is also black, and it has a thermocouple fitted to its wall to measure the temperature in the vessel.
•    It allows students to find the emissivity of a surface and verify the Stefan-Boltzman equation.
•    It also gives students an understanding of the non-dimensional characteristics using Nusselt, Grasof, Prandtl and Knudsen numbers.
•    The vessel may be charged with compressed air up to 1 bar (gauge) or evacuated down to about 5 Pa (absolute).
•    Instruments and a digital display measure and display the temperatures, pressures and power to the element.
•    To give accurate measurements of pressure and vacuum, the equipment has two different pressure transducers - one for pressures above atmospheric and one for pressures below atmospheric.

Emissivity Natural Convection And Radiation ALTEC Laboratory Equipments and ALTEC Laboratory Instruments Tenders.