A long horizontal rod, which is heated at one of its ends, is used as extended surface for measurements of heat transfer. A set of thermocouples installed at regular intervals along this rod enables to measure the temperature trend. As the diameter of the rod is small with respect to its length, heat conduction along the rod can be supposed to be one-dimensional and heat loss from the tip can be ignored. The rod is coated with a heat-resisting mat black paint ensuring an emissivity close to one.
TRAINING PROGRAM
This unit enables to develop and analyze the following issues:
• measuring the temperature distribution along an extended surface and comparing the results with theoretical models
• heat transfer from an extended surface resulting from free convection and radiation, and comparing the results with theoretical models
TECHNICAL CHARACTERISTICS:
• Cylindrical rod of brass with diameter of 10 mm and length of 350 mm
• Electric heating of the rod at 20 W @ 24 Vdc
• Eight K-type thermocouples at intervals of 50 mm
• Painting the rod to ensure an emissivity close to one
