Emissivity Natural Convection And Radiation Manufacturer,Supplier and Exporter in India

• 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.

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