Free and Forced Convection

Specification:

• A bench mounted unit specifically designed to demonstrate the phenomena of free and forced convection and to measure temperature profiles from three different heat transfer surfaces
• Comprises of a vertical air duct, with a transparent front for visibility mounted on a fan at the base of the duct, three heat transfer surfaces, airflow, and temperature probes
• Technical data is included for each of the three heat transfer surfaces, which will enable students and researchers to compare practical results with theoretical analysis for free and forced convection
• Three heat transfer surfaces supplied:

• Vertical duct incorporates a transparent front wall allowing complete visualisation of the process and identification of the airflow and temperature sensors
• Each heat transfer surface is fitted with its own heater (240W) and thermocouples, to allow for easy interchange
• All heat transfer surfaces incorporate guards to allow safe use outside of the duct for performing free convection experiments

• Relationship between surface temperature and power input in free convection
• Relationship between surface temperature and power input in forced convection
• Understanding of the use of extended surfaces to improve heat transfer from the surface
• Determining the temperature distribution along an extended surface
• Comparing characteristics of a vertical and horizontal flat plate in free convection
• Determining the characteristic velocity, the Reynolds, Grashof and Rayleigh numbers for a flat plate in free convection
• Comparing horizontal and vertical configurations for a finned exchanger in free convection