The Ocean Thermal Energy Conversion Project Uses the Surface Water

question 54

Multiple Choice

The ocean thermal energy conversion project uses the surface water near tropical islands with a temperature of 20°C as the hot temperature reservoir,and the water at some depth,with a temperature of 5.0°C,as the cold temperature reservoir for a heat engine.What is the maximum possible efficiency of an engine running between those two temperatures?

• A)4.7%
• B)5.1%
• C)7.9%
• D)15%
• E)30%

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Definitions:

Total Utility

The total satisfaction received from consuming a certain amount of goods or services.

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A popular snack consisting of a hot dog coated in a thick layer of cornmeal batter and deep-fried.

Marginal Utility

The additonal satisfaction or utility that a person receives from consuming an additional unit of a good or service.

Total Utility

The total satisfaction or benefit gained from consuming a particular quantity of goods and services.