Ways to generate clean electricity?

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Discussion Overview

The discussion centers around various methods for generating clean electricity, specifically exploring the feasibility of using electrolysis to produce hydrogen and oxygen from water, and then utilizing that gas in a combustion engine. Participants also touch on alternative clean energy sources such as ethanol, solar, wind, and hydro power.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant proposes generating electricity by using electrolysis to split water into hydrogen and oxygen, then igniting the gases in a combustion engine.
  • Another participant confirms the use of electrolysis but questions the efficiency of the process, suggesting that more energy would be consumed in producing the hydrogen than would be gained from its combustion.
  • A different viewpoint suggests that ethanol could be a cleaner fuel alternative for cars, with minimal modifications needed for existing petrol engines.
  • Concerns are raised about the source of electricity used for electrolysis, questioning whether it comes from fossil fuel sources like coal.
  • One participant emphasizes the first law of thermodynamics, arguing that the energy output from the combustion process cannot exceed the energy input from electrolysis, regardless of efficiency.

Areas of Agreement / Disagreement

Participants express disagreement regarding the viability of using electrolysis for energy generation, with some supporting the idea and others highlighting its inefficiencies and limitations. There is no consensus on the effectiveness of the proposed method.

Contextual Notes

Participants mention the efficiency of electrolysis and the implications of energy loss in the proposed system, but do not resolve the mathematical or technical details surrounding these claims.

Jacquesl
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Ways to generate clean electricity?
I’ve been working long on this one, I’m working on a project to generate electricity from every but fossil fuels, don’t want to pollute our world any more with Carbon dioxide //CO2

What about using water to convert to hydrogen and oxygen and then use that to fuel my combustion engine.
Will that work or will it only make things run in loops and get no where

I’ve tried a test with water it takes up 10 sec @28v //0.30A to generate hydrogen and oxygen and then one spark to pop of the lid from the small container, will that be possible to generate electricity from that.
 
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So, you propose to use electrolysis to convert water into hydrogen and oxygen, then ignite this mixture to produce water again?
 
Yip, your 100% correct and in the process I’ll probably could capture some energy, will it work
 
No unfortunately not, electrolysis is only around 40% efficient (if memory serves); you would use more energy obtaining the hydrogen and oxygen than would be produced when you ignite it. Sorry to burst your bubble :frown:
 
The easiest, allmost clean fuel to use in cars would probably be ethanol.
Allmost all petrol cars can use it with very small modification.

But if you want stationary power generation there are other clean ways like sun power, wind power, water power or combinations of those.
 
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Jac, there is a question you should ask yourself: Where did you obtain the electrical energy to separate the water? Was it from a coal power plant?
 
Clearly, Jac believes that you don't need a coal power plant to make the hydrogen (except perhaps for startup), you just use the electricity from your generator.

Jac, the chemical process goes like this:

2H2O + E -> 2H2 + O2 (electrolysis)
2H2 + O2 -> 2H2O + E (combustion)

Notice that the equations are exactly the same, but reversed. So even if all of your various devices were 100% efficient (and they aren't anywhere near 100% efficient), you'd only ever get out of this what you put into it.

There is no free lunch. That's the first law of thermodynamics.

Variations of this question are so common, so simple (you learned this in 8th grade), and so useless (people often spin their wheels for lifetimes trying to beat the first law of thermo), we don't discuss it here. It is a waste of your time and ours.
 
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