Ocean Thermal Energy Conversion System : DigInfo

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Ocean Thermal Energy Conversion (OTEC) is an innovative power generation system that uses the slight temperature difference between surface layer ocean water and deep ocean water.

Xenesys Inc. has acquired an exclusive license for the patent on the "Uehara Cycle", a cycle developed by Saga University with higher efficiency than the conventional method, and is implementing demonstration testing using an OTEC mini model plant.

First, a mixture of ammonia and water is sent to an evaporator. There, the mixture is evaporated by the red colored surface layer ocean water, which then rotates the mixed steam turbine to generate electricity. The mixed steam is then cooled and condensed to liquid by the blue colored deep ocean water and then once again sent to the evaporator as recycled water. Through the repetition of this cycle, power can be continuously generated using only ocean water.

The Ocean Thermal Energy Conversion system of course outputs zero CO2 emissions and can provide a stable annual supply of electricity because it is not affected by weather variations as is the case with wind power and solar power generation systems.

The OTEC system demonstrates significant potential as an ultimate power supply system for the future.

Category:

News & Politics

Tags:

• diginfo
• Xenesys
• OTEC
• Ocean
• Thermal
• Energy
• Conversion

[thorargent]

You know what amazes me? This was invented in the 1930s using the ammonia cycle and producing 22 kw of power by Georges Claude. Then Nikola Tesla wrote an entire paper showing OTEC in 1931. This is old, old news. Wake up, this stuff has been around for many decades but ignored or downplayed. Now that they have everyone by the throat they trot out this "new" idea. This is just like broadcast power and electrostatic nuclear fusion. Politics and lawyers are killing us, not "shortages".

[luisfcayo]

it pissed me off how people in the United States only think about how big will their next truck will be. Very few people subscribed to this channel very sad.

[MakaiOceanEngineer]

Please see our company website and blogs for the latest developments in heat exchanger and cold water pipe research and development.

-Makai Ocean Engineering, Inc.

[thorargent]

"Our Future Motive Power" published in Everyday Science and Mechanics in December 1931, an article written by Tesla, outlines his ideas and how the system works. I will look for an original paper in the notes and books I have.

[jackmcslay]

@thorargent Do you know the exact name of Tesla's paper on it? Now I'm interested in reading it

[MillyVanillification]

@WaiWu The only direct conversion of heat (without using aggressive chemicals in the amounts of megatonnes) is from the earths crust. Its right there below our feet. Everywhere. Weather independent. 24/7 availability. Cheap to harvest. each town can have a power plant. We dont need megamaniac constructions which harvest energy in dangerous places where nobody needs it. Its ineffiicient and ammonia is harmful.

[WaiWu]

Might as well use solar power...common it's more direct than all the other conversion energy method... it all came from the sun anyway way...

[shotputsteve]

This is one of the lowest efficient energy generating technologies out there. Its crazy expensive with little output. It will never come to commercial scale plants.

[2020tuber]

Using the ocean to cool the liquid seems fine at first, but what about long term dumping of heat into the ocean? Effects of ecology immediate local ecology and eventually surrounding areas? Fishes & planktons die because of increased heat will cause a chain reaction. Polar ice cap melting? Doesn't what form of energy we used, the output is always heat. While some maybe cleaner than others. The real problem is how do we solve the waste heat!!!

[enticed2zeitgeist]

Not just a revision of the patent system is required. As energy is only one part of a larger problem that is facing all of humanity. A complete revision of society in it's totality is required. This is why I advocate The Venus Project. Lets put the integrity of the biosphere and human prosperity at the forefront of society instead of self interest and perhaps we can have technology like this in widespread use.

[RandomDirectors]

@Peopleunit The energy comes from the Sun which makes its energy through fusion.

[Peopleunit]

@davematthewsblows - one of the ultimate sources of all the energy on earth comes from the sun. The sum total for all the energy man used by man is a tiny fraction of that daily solar input. We could utilize this technology on a grand scale and the effect would probably go unnoticed.

The patent landscape needs to be revamped, totally.