Deep Water Electrolysis = Hydrogen + Buoyancy

In summary, the conversation discusses the potential for using the buoyancy force of hydrogen gas created at sufficient depth of water to recover the energy used in hydrogen production. The process involves using electricity to split ocean water and capturing the gas in containers attached to a conveyor belt, which turns electricity generators on the surface. The required depth for the process to be self-sufficient and the effects of water pressure and salinization are also mentioned. The conversation also explores the possibility of using the process in inland lake installations and the practical solutions and calculations needed. Ultimately, it is noted that there is no free lunch when it comes to energy and the energy required for electrolysis varies with pressure.
  • #1
WaterBart
3
0
Hi there.

The energy used for hydrogen production can be recovered using the buoyancy force of the gas created at sufficient depth of water.

Suppose we use electricity to split ocean water to produce hydrogen. Then the produced gas is captured into containers which are attached to a conveyer belt and the conveyer belt turns electricity generators.

On the surface we can release oxygen and hydrogen can be packed / transported for further use and/or used to on site to produce even more electricity.

What would be the required depth at which the process would be self-sufficient ? ( i.e Energy used in electrolysis is recovered by the buoyancy force applied to turn the generators.
Below this theoretical depth we would start to produce energy which would be commericaly viable.

How water pressure, solemnization etc would affect the process ? Is sea water or sweet water better for the purpose ?

My very rough estimation points to 100m below sea level. For test installation such a conveyer belt might be attached to and old oil platform. The construction would not require any high tech solutions and might be relatively cheap.

The device might be as well completely submerged with electricity being transferred ashore by cables or it could serve as a Sea Hydrogen Refuel Station. What about inland lake installations ?

Please advice as to practical solutions and the required calculations.
 
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  • #2
Welcome to PF!

Sorry, but the energy required for elecrolysis varies with pressure, so the deeper you do it, the more electrical energy you have to put into it. You should be able to find the chemical binding energy of water via google...And the vaporization energy at different pressures.
 
  • #3
You should be aware that there is no free lunch when it comes to energy.
 

What is deep water electrolysis?

Deep water electrolysis is a process that uses electricity to split water molecules into hydrogen and oxygen. It takes place in a sealed container filled with water, where an electric current is passed through the water to separate the hydrogen and oxygen atoms.

How does deep water electrolysis produce hydrogen?

During deep water electrolysis, an electric current is passed through water, causing the water molecules to split into hydrogen and oxygen. The hydrogen gas is then collected and can be used as a source of clean energy.

What is the purpose of combining hydrogen and buoyancy in deep water electrolysis?

The combination of hydrogen and buoyancy in deep water electrolysis allows for the production of hydrogen gas in a more efficient and cost-effective manner. By utilizing buoyancy, the hydrogen gas can be easily separated and collected, reducing the energy and resources needed for the process.

What are the potential benefits of deep water electrolysis?

Deep water electrolysis has several potential benefits. It can provide a clean and renewable source of hydrogen fuel, which can be used in various applications such as powering vehicles and generating electricity. Additionally, deep water electrolysis does not produce any greenhouse gases, making it an environmentally friendly option for energy production.

Are there any challenges associated with deep water electrolysis?

While deep water electrolysis has many potential benefits, there are also challenges that need to be addressed. These include the high energy requirements for the process, the need for specialized equipment, and the potential impact on marine ecosystems. Further research and development are needed to overcome these challenges and make deep water electrolysis a viable option for clean energy production.

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