Lectures 4 and 5 Homework Solutions Spring 2007

Lectures 4 and 5 Homework Solutions Spring 2007 -...

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8-8C The system that is at the temperature of the surroundings has zero exergy. But the system that is at a lower temperature than the surroundings has some exergy since we can run a heat engine between these two temperature levels. 8-9C They would be identical. 8-10C The second-law efficiency is a measure of the performance of a device relative to its performance under
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Unformatted text preview: reversible conditions. It differs from the first law efficiency in that it is not a conversion efficiency. 8-11C No. The power plant that has a lower thermal efficiency may have a higher second-law efficiency. 8-12C No. The refrigerator that has a lower COP may have a higher second-law efficiency....
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Lectures 4 and 5 Homework Solutions Spring 2007 -...

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