The above derivation did not utilize the details of the four-step cycle that comprises the Carnot engine. However, the net work and net heat of the cycle in Fig. 4.2 given by Eqs (4.1) and (4.2) result in the efficiency of Eq (4.6). (prob. 4.22)
Demonstration that the Carnot engine has the maximum possible efficiency is based on the pair of engines shown in Fig. 4.8. The method posits a higher efficiency
i r J
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Do we really want the one thing that gives us its resources unconditionally to suffer even more than it is suffering now? Nature, is a part of our being from the earliest human days. We respect Nature and it gives us its bounty, but in the recent past greedy money hungry corporations have made us all so destructive, so wasteful.