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Futai eC02 Supercritical Energy Agency

"eCO₂ supercritical power circulation generator" is one of the next generation power generation technologies aiming for carbon neutral and highly efficient power generation. Simply put, it is a power generation system that uses supercritical carbon dioxide (CO₂) as the working fluid. An easy-to-understand overview is provided below.

■ What is supercritical CO₂ (sCO₂)?

  * Supercritical state: When CO₂ is brought to high temperatures and high pressures (approximately 31°C or higher, 7.38MPa or higher), it becomes a "supercritical fluid" with properties intermediate between a liquid and a gas.

  * CO₂ in this state has extremely high energy density and thermal conductivity, making it efficient for heat exchange and energy conversion in turbines.

■ Features of eCO₂ supercritical power circulation generator

  1. High efficiency:

      * It has higher thermal efficiency (up to 50% higher) than conventional steam turbines, reducing fuel consumption.

  2. Compact and lightweight:

      * Since sCO₂ is highly dense, it is possible to downsize turbines and heat exchangers. Also suitable for space, submarines and distributed power generation.

  3. Reducing environmental impact:

      * Since reusable CO₂ is used as the working fluid, it can be used without increasing emissions and contributes to a decarbonized society.

  4. Flexible heat source support:

      * Compatible with various heat sources such as nuclear power, renewable energy (solar heat, etc.), and industrial waste heat.

■ Application example

  * Combined use with next-generation nuclear power generation (SMR, etc.)

  * Solar thermal power generation system

  * Geothermal power generation

  * Power supply in outer space (future application)

  * Compact distributed power generation system

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