Practical Demonstration Units, Using Common Components, For An Introductory Thermodynamics Course

The enhancement of an introductory thermodynamics course, using devices constructed from common lab components, is presented and discussed. The devices were developed using spare parts and materials readily available to provide practical demonstrations in the classroom. The devices include: a simple water bottle rocket launcher used to demonstrate the conservation of mass; a space heater and plywood box used to demonstrate steady state heat transfer and energy conservation; and an air piston, accumulator, and compressor system for demonstrating boundary work. Specifications are presented with associated costs. Class exercises used with the demonstration units are described in detail. The demonstrations, with exercises, each require one hour of lecture, and were used in an accredited thermodynamics course. The course is scheduled for 2.5 lecture hours per week, with no lab, presenting an ideal venue for short demonstrations.