The device is a circular pipe that loses heat by forcing air through it by forced convection. A heater powered by electricity that has input control adds heat flux to the pipe continuously. At several locations along the pipe's length, the surface temperature is measured. Air temperature is monitored at the test section's inlet and outflow. The ability to calculate local and global forced convection heat transfer coefficients at different airflow rates and different heat flux values is therefore provided to the students.

SPECIFICATIONS

• Test pipe – 32mm NB GI pipe, 500 mm. long, heated by band heater, outside.
• Centrifugal blower to force air through test pipe with How control valve.
• Variac 2A, capacity to force air through test pipe with flow control valve.
• An orifice meter with differential water manometer.
• Voltmeter and Ammeter to measure heater input.
• Multichannel digital temperature indicator to measures various temperatures.
• A technical manual accompanies the unit.

SERVICES REQUIRED:

• Bench area of about 1m. x 0.75 m. at working height.
• 239v, 15A, AC, supply with earthing connection.