Why Might an Ocean-Based Thermal Energy Scheme Fail to Be Sustainable?

AI Thread Summary
An ocean-based thermal energy scheme requires both a hot and a cold energy source to function effectively. The extraction of thermal energy from the ocean involves using the temperature difference between these sources. If only one temperature source is utilized, the system cannot sustain itself, leading to inefficiency. The discussion highlights the necessity of understanding thermodynamic principles in energy extraction methods. Ultimately, without the proper temperature gradient, the scheme is unlikely to be sustainable.
dsfranca
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Hi guys, I saw this problem today and the solutions was not obvious to me, especially because I believe it is not clearly stated.

Homework Statement


Consider a scheme in which thermal enrgy is extracted from the ocean. Some of the extracted energy is used to perform mechanical work(run the ship) and the rest is discarded back into the ocean. Why will this not work?


Homework Equations





The Attempt at a Solution


Thank you!
 
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Just got a solution. It needs two energy sources, one hot and one cold. Should have thought more before posting it here...
Sorry
 

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