Fuel Query: Converting Liquid Oxygen & Ethanol into Mechanical Energy

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SUMMARY

The discussion centers on the feasibility of using a mixture of liquid oxygen (LOX) and ethanol as a fuel source for mechanical energy conversion, specifically for turning rotors. The participant highlights the historical use of this fuel combination in rocket engines and seeks insights into the necessary engine components and relevant equations for this application. It is noted that while LOX is costly to produce, utilizing atmospheric oxygen could significantly reduce expenses. The current price of LOX in the UK is competitive with traditional fuels, prompting further exploration of this concept.

PREREQUISITES
  • Understanding of combustion engine mechanics
  • Familiarity with thermodynamics and energy conversion principles
  • Knowledge of liquid oxygen (LOX) properties and handling
  • Basic equations related to fuel efficiency and energy output
NEXT STEPS
  • Research the design and components of rocket engines for LOX and ethanol
  • Study thermodynamic equations relevant to combustion and energy conversion
  • Explore alternative oxygen sources for combustion processes
  • Investigate current applications of ethanol as a fuel in various engines
USEFUL FOR

Engineers, researchers in energy conversion, and individuals interested in alternative fuel technologies will benefit from this discussion.

Philpense
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I write as one with a background in molecular biology and nothing in engineering. Looking to advance an idea of using a former rocket fuel for a terrestrial purpose. A mixture of liquid oxygen and ethanol was used in past decades.. What engine elements would be required to convert this fuel energy into some type of mechanical energy... say to turn rotors. What equations would be involved in such a case. Much thanks in advance for an informed reply.
 
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Ethanol is used now as a gasoline replacement for many engines.

Liquid oxygen, LOX, is too expensive to produce for use on the Earth's surface. Instead, use the atmosphere which is about 20% oxygen. That will also save significantly on transportation costs.
 
Baluncore said:
Liquid oxygen, LOX, is too expensive to produce for use on the Earth's surface.
Hmm... the current price per liter of LOX is cheaper than gasoline or diesel in the UK. But of course air is free.
 

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