Hyundai Heavy Industries (HHI), the world’s largest shipbuilder and Korea Electric Power Corporation (KEPCO), a leading utility firm in South Korea, announced today that they received an Approval in Principle (AIP) for a 2MW Supercritical CO2 (S-CO2) Power Generation System recovering waste heat of a diesel/gas engine from Lloyd’s Register. The two companies plan to commercialize the next generation S-CO2 system by 2019.

Hyundai Heavy Industries and KEPCO Receive AIP for 2MW Supercritical CO2 Power Generation System

Hyundai Heavy Industries shipyard in Ulsan, about 410 km (255 miles) southeast of Seoul / Image: Lee Jae-Won

S-CO2 is a fluid state of carbon dioxide where it is held above its critical pressure and critical temperature which causes the supercritical state to go beyond liquid or gas into a phase where it acts as both. The S-CO2 system runs generators by utilizing the CO2 as a working fluid for power generation. Since S-CO2 is denser than the working fluids in gas turbines and steam turbines, the S-CO2 turbine can be designed with roughly 1/3rd size of steam turbines for the same output with 30% increased energy efficiency.

The S-CO2 system can use various energy sources including coal-fired power plants, renewable energy, nuclear energy as well as waste heat coming from onshore engine power plants and marine engines of large-sized ships.

Joo Won-ho, the director of HHI’s Corporate Research Center, said, “With the development of the S-CO2 technology that boosts the energy efficiency of ships and on-land power plants, we are better positioned to secure a differentiated technology competitiveness in the field of eco-ships and engine power plants.”

Kim Dong-sub, president of KEPCO Research Institute added, “We see S-CO2 technology has huge potential considering that it can be linked with the thermal and nuclear power generation system, and can reduce greenhouse gas emission by improving power efficiency.”

Source: HHI