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

[dsfranca]

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!

 

[dsfranca]

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

 

[tomcue]

Hello, thank you for bringing this problem to my attention. Based on the information provided, it seems that this thermal energy scheme is not sustainable in the long run. This is because the ocean has a finite amount of thermal energy and continuously extracting and discarding it back into the ocean will eventually deplete its thermal energy reserves. Additionally, the process of extracting and discarding thermal energy may also have negative impacts on the ocean's ecosystem. It is important for any energy scheme to consider the sustainability and potential consequences on the environment. Further research and development is needed to find more sustainable and efficient ways to extract and utilize thermal energy from the ocean.