TH 320 FREE AND FORCED CONVECTION, Computer Interface
GENERAL DESCRIPTION

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.

 

Net (unassembled) Shipping Dimensions WxLxH 40 x 65 x 135 cm.
Net Weight Approx. 35 kg.