Ocean Thermal Energy Conversion (OTEC) uses the temperature difference between the surface and deep layers of the ocean to generate electricity.

Ocean Thermal Energy Conversion (OTEC) uses the temperature difference between the surface and deep layers of the ocean to generate electricity.
Ocean Thermal Energy Conversion (OTEC) is a technology that uses temperature differences in the ocean to generate electricity.
The basic mechanism is to use the temperature difference between warm surface water and cold deep water to generate electricity by using the evaporation and condensation caused by the difference to turn a turbine. Generally, the greater the temperature difference, the higher the power generation efficiency.
OTEC is attracting attention as a sustainable energy source and has the potential to contribute to mitigating global warming and supplying renewable energy by utilizing the abundant energy resources of the ocean.
Near the equator, the difference in fecundity between the surface layer and the deeper 1,000 meters is as high as 24 degrees Celsius, and it is calculated that there are approximately 86 tons of oil equivalent energy reserves within the 200 nautical mile economic zone of Japan.
This has the potential to transform the energy situation in Japan and the world in the future.
Xenesys Corporation, which has revolutionized the work of sake brewers by selling rice grown in-house to sake brewing companies and developing automated machines for sake brewing, has taken a step forward in the world with a completely new business venture: ocean thermal energy conversion. /
It is also a successful example of private-sector-led industry-academia collaboration. /
Ocean Thermal Energy Conversion (OTEC) is a type of energy conversion technology that uses temperature differences in the ocean to generate electricity. It mainly uses the temperature difference between the surface and deep layers of the ocean. //
It uses the temperature difference between the surface and deep layers of the ocean to generate energy. Normally on Earth, seawater gets colder as it goes deeper. Energy is extracted by utilizing the temperature difference between the warm ocean water in the surface layer and the cold ocean water in the deep layer. /
The procedure involves three steps. /
1. Closed-loop cycle: The warm seawater is used to evaporate a liquid with a low boiling point (usually ammonia), which is then used to turn a turbine to generate electricity. The liquid is then condensed with cold seawater.
2. Open-loop cycle: This cycle uses warm seawater to directly generate steam, which is then used to generate electricity. The steam generated by the cold seawater is condensed. /2.
Mixed-loop cycle: combines the characteristics of closed-loop and open-loop cycles. / 4.
Ocean Thermal Energy Conversion (OTEC) is mainly applied in tropical waters. The larger the temperature difference, the higher the power generation efficiency. Challenges include high initial investment costs, equipment durability, environmental impact, and impact on marine ecosystems. /