SPH 302 LESSON 5: Heat engines and the Carnot cycle

Institution	TOM MBOYA UNIVERSITY
Course	EDUCATION
Year	3rd Year
Semester	Unknown
Posted By	Brian Mike
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Pages	12 Pages
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A heat engine, or more simply, an engine, is a device that extracts energy from its environment in the form of heat and does useful work. At the heart of every engine is a working substance. In a steam engine, the working substance is water, in both its vapor and its liquid form. In an automobile engine, the working substance is a gasoline–air mixture. If an engine is to do work on a sustained basis, the working substance must operate in a cycle; that is, the working substance must pass through a closed series of thermodynamic processes, called strokes, returning again and again to each state in its cycle.

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