This apparatus consists of a rotary calorimeter, driven by a variable speed motor. The calorimeter is composed by a metal cylinder, filled with water, and wrapped by a nylon string; the string extremities are fixed from one side to a spring dynamometer and from the other side to a weight. When the calorimeter rotates, the friction forces between
the string and the external side of the calorimeter cause an increase in the water temperature. It is possible to measure this increase in temperature through a digital thermometer. The number of revolutions of the calorimeter is given by a mechanical rpm counter.
TRAINING PROGRAM
This unit enables to develop and analyze the following issues:
• First law of thermodynamics
• Mechanical equivalent of heat
• Law of conservation of energy
TECHNICAL CHARACTERISTICS:
• Stainless steel structure for the support of the calorimeter system
• Water Calorimeter (diameter = 50 mm), nylon braid, and one 5 kg weight
• Digital Thermometer
• D.C. motor with speed control
• Dynamometer, full scale value: 0–2500 g; 20 g steps
• Mechanical revolution counter
• Control Panel with automatic/differential switch, motor drive, and speed regulation system
• Power supply: 230 Vac 50 Hz single-phase – 350 VA (Other voltage and frequency on request)
