May 2011
Beginner
492 pages
14h 16m
English
Content preview from Heat and Thermodynamics
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9.5 Carnot's Theorem
All reversible engines working between the same limits of temperature must have the same efficiency.
Proof (A): If not, let an engine S be more efficient than an engine R (Fig. 9.3). This means that by drawing the same quantity of heat from the source, the work WS produced by S is greater than the work WR produced by R. Accordingly, S can be made to drive R backwards.
Fig. 9.3 Scheme representing Carnot's theorem
Let the quantity of heat drawn by S from the source be Q. Then, the quantity of heat given by S to the refrigerator is (Q − Ws). Let the quantity of working substance in R be so adjusted that in each reverse ...
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