Energy efficiency of nuclear and fossil fuel

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Discussion Overview

The discussion revolves around the efficiency of energy conversion in nuclear fuel compared to fossil fuels such as oil and coal. Participants explore the thermal conversion efficiencies of these energy sources, particularly in the context of different heat cycles and applications.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • Some participants inquire about the percentage comparison of energy conversion efficiency between nuclear fuel and fossil fuels.
  • One participant questions the background knowledge of others in thermodynamics to gauge understanding of heat cycle efficiencies.
  • A participant expresses a lack of background in thermodynamics but seeks a general sense of efficiency comparisons.
  • It is suggested that if heat is used to drive steam turbines, the thermal conversion efficiencies of nuclear and fossil fuels might be similar, but different applications like internal combustion engines may yield different efficiencies.
  • Another participant raises the question of specific numbers regarding mass-energy conversion in nuclear reactions compared to fossil fuel combustion.

Areas of Agreement / Disagreement

Participants do not reach a consensus on specific efficiency percentages or mass-energy conversion values, and multiple viewpoints regarding the efficiency of different applications remain present.

Contextual Notes

The discussion lacks specific numerical data on efficiency percentages and mass-energy conversion, and assumptions about the context of energy generation methods are not fully explored.

Ranku
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Can anyone give a percentage comparision of efficiency of energy conversion in nuclear fuel and fossil fuels like oil and coal?
 
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Ranku said:
Can anyone give a percentage comparision of efficiency of energy conversion in nuclear fuel and fossil fuels like oil and coal?
What is your background so far in thermodynamics? Do you understand the efficiencies of different heat cycles?
 
berkeman said:
What is your background so far in thermodynamics? Do you understand the efficiencies of different heat cycles?
I do not really have a background in thermodynamics. I guess I'm trying to get a general sense of how efficient is nuclear energy compared to fossil fuels.
 
Ranku said:
I do not really have a background in thermodynamics. I guess I'm trying to get a general sense of how efficient is nuclear energy compared to fossil fuels.
If you are using their heat to drive steam turbines, then their thermal conversion efficiency should be similar, I would think. If you are burning the fossil fuel in an internal combustion engine or a turbine engine, that will have a slightly different efficiency. So the decision on what to use to generate power comes down to many other issues, right?

https://en.wikipedia.org/wiki/Thermal_efficiency
https://en.wikipedia.org/wiki/Engine_efficiency
 
berkeman said:
If you are using their heat to drive steam turbines, then their thermal conversion efficiency should be similar, I would think. If you are burning the fossil fuel in an internal combustion engine or a turbine engine, that will have a slightly different efficiency. So the decision on what to use to generate power comes down to many other issues, right?

https://en.wikipedia.org/wiki/Thermal_efficiency
https://en.wikipedia.org/wiki/Engine_efficiency
Hmm...do we have some numbers in terms of the basic mass-energy conversion, like how much of 1 kg of mass would get converted into energy in a nuclear reaction or reactor, and what is the comparative mass-energy conversion for the combustion of say 1 kg of fossil fuel like coal?
 

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