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

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SUMMARY

The discussion centers on the sustainability challenges of ocean-based thermal energy schemes. It is established that such systems require two distinct energy sources: a hot source and a cold source, to effectively extract thermal energy. The failure to provide both sources results in inefficiency, as energy cannot be adequately harnessed for mechanical work. The conclusion emphasizes the necessity of understanding thermodynamic principles in the design of these energy systems.

PREREQUISITES
  • Thermodynamics principles, particularly heat transfer.
  • Understanding of ocean thermal energy conversion (OTEC) systems.
  • Knowledge of energy efficiency and mechanical work concepts.
  • Familiarity with energy source requirements for thermal systems.
NEXT STEPS
  • Research ocean thermal energy conversion (OTEC) technologies and their applications.
  • Study thermodynamic cycles, focusing on Carnot and Rankine cycles.
  • Explore energy efficiency metrics in thermal energy systems.
  • Investigate alternative renewable energy sources and their integration with thermal systems.
USEFUL FOR

Engineers, environmental scientists, and energy policy makers interested in renewable energy solutions and the feasibility of ocean-based thermal energy systems.

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 energy 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!
 
Physics news on Phys.org
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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