Item Description

Sci-tech Free and Forced Convection Heat Transfer Unit Model TH 015 is a bench top unit with observation
windows and is designed to enable students to study both free and forced convection heat transfer processes from the flat plate, circular cylinder in a tube bundle and the tapered fin. The design is modular in construction and there is a provision to change the heat transfer surface easily in the unit. The unit consists of a vertical square duct in which air flow is obtained by means of a variable speed axial flow fan to carryout forced convection experiments.
Honeycomb and screens are provided at the inlet of the duct to straighten the air flow. The flat plate, cylinder and tapered fin models are electrically heated using a variable heater and the temperature of the heat transfer surface can be limited using thermostats. The fan can be switched-on for forced convection experiments and switched-off for free convection experiments. There is a provision for the measurement of temperature of the heat transfer surface and the surrounding air inside the duct using temperature sensors. Air velocity inside the duct is measured using sensor. The control panel houses heater and fan speed controls, digital displays of fan speed, surface and surrounding temperatures, air flow velocity, switches and fuses.