Carnot Inequality

Carnot Inequality - Carnot Inequality Some processes occur...

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Carnot Inequality Some processes occur within an engine that create entropy irreversibly. Friction is a good example of such an unwanted source of entropy. We therefore can say that the actual efficiency of an engine is only as good or worse than the Carnot efficiency: η η C . This relation is known as the Carnot Inequality. Therefore a heat engine is a device that takes an input of heat at a high temperature, converts the heat partially to work, and expels heat at a lower temperature to maintain constant entropy inside the device. The lower temperature cannot practically be lower than that of the environment because the heat must eventually be dumped somewhere. Therefore the higher temperature is typically quite hot, usually many hundreds of Kelvin. We can compress all of this information into a tidy diagram. Take some time to understand the diagram and what is represented there. Figure %: Entropy and Energy in a Heat Engine
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This note was uploaded on 02/09/2012 for the course PHY PHY2053 taught by Professor Davidjudd during the Fall '10 term at Broward College.

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Carnot Inequality - Carnot Inequality Some processes occur...

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