Free and Forced Convection: Computer Interface

The unit is used for studying heat transfer by free and forced convection in a vertical duct.

A heating surface is attached to the middle of the duct. Three types of heating surfaces are available i.e. vertical flat plate, plate with cylinders, and finned plate. A front window is provided for visual observation of the heating surface. Air enters the duct at the bottom duct with flow straightener and escapes via the top. A fan is attached to the top of the duct to induce forced convection. Air velocity is measured by a thermal probe anemometer. Temperatures of hot surface and of air at different points in the duct are measured by thermocouples.

A service module provides power supply, heater control unit, and measuring instruments.

Instruction manual is also included.

TYPICAL EXPERIMENTS
  • Principles of free and forced convection.
  • Heat transfer in flat plate, cylindrical and finned surfaces.
  • Temperature distribution on cylindrical and finned surfaces.
  • Outlet air temperature distribution.
  • Determination of Reynold, Nusselt and Prandtl numbers.
  • Calculations of heat transfer coefficient, efficiency and heat transfer rate.
TECHNICAL DATA
Duct
 – Cross section 120 x 120 mm
Heater
 – Capacity 320 watts
 – Material Aluminium
Heat transfer area of surfaces
 – Flat
 – Cylindrical
 – Finned
Fan with speed control unit Maximum flow rate over 3.0 m3/min
Measuring instruments
 – Sensors with digital display
  • Voltage and current of input power
  • Temperatures of air inlet and outlet, heater and heated surface
Software for data display and analysis by computer (separately supplied).
Power supply 220 V, 1 Ph, 50Hz. Other power supply is available on request.
In Stock
100% Original and quality

Additional information

Brand

Essom