FREE AND FORCED CONVECTION TVET Lab Equipments India, FREE AND FORCED CONVECTION for Testing Lab suppliers in South Africa and TVET Lab FREE AND FORCED CONVECTION Suppliers in Mozambique, Supplier Kenya, Southren African region, Botswana, Lesotho, Malawi, Angola, Namibia, Zambia, Zimbabwe, Mauritius, Rwanda, Seychelles, Tanzania and Uganda, Djibouti, Ethiopia, Kenya, Madagascar.

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FREE AND FORCED CONVECTION

Code: Civil-MCE-0159

FREE AND FORCED CONVECTION.

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 and heater control unit, power measurement unit and temperature indicator.

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
- Crossection	: 120 x 120 mm.
. Heater
- Power	: 320 watts with dimmer switch.
. Heating surfaces, aluminium	: One each 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 for input power measurement.
	: Temperatures for air inlet and outlet, heater, heated surfaces, air inlet and outlet.
. Power supply	: 220V 1Ph 50Hz. Other power supply is available on request.
. Temperature control unit to set heating surface temperature.

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