Engineering and technology students often struggle with comprehension of thermal science topics, due to the seemingly abstract nature of the topics when compared with materials or machine design concepts. For example, it is difficult for some students to “see” the conservation of thermal energy explained by the First Law of Thermodynamics, yet they can easily visualize transformations between potential and kinetic energy in a simple mechanical system. Laboratory experiments help alleviate the difficulties in some cases, but even a lab-based introductory thermal science course in the Mechanical Engineering Technology department at Purdue University does not consistently improve student understanding of the basic principles. This paper describes the development and implementation of simple open-ended projects, used in conjunction with the laboratory portion of the course, as a means for increased student understanding. Project topics have ranged from proving basic equations to investigating more complex problems, such as the effect of window treatments on cooling requirements or the feasibility of alternative energy sources. Results from Fall 2003 semester projects are presented.
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