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Re: OrizG post# 36990

Monday, 05/24/2021 8:46:47 PM

Monday, May 24, 2021 8:46:47 PM

Post# of 60069
Perhaps we should discuss this...

During the discharge cycle, the stored hydrogen is consumed in the fuel cells in power generation mode, returning power to the grid for consumption as needed, particularly when other power resources like wind and solar are not producing electricity. Storage capacity is easily expanded by adding additional hydrogen storage tanks or storage caverns, which enables a low cost and scalable approach for clean energy storage. Long duration electricity storage is a growing need given the increasing penetration of intermittent renewable sources of solar and wind.

Conventional electrolysis systems based on polymer membrane or alkaline electrolyte cells operate near ambient temperature and convert water to hydrogen with electrical efficiency generally ranging 60% to 65%. FuelCell Energy’s solid oxide electrolysis platform operates at much higher efficiency, producing more hydrogen for a given amount of power input. Under some conditions, the cells can be operated at or above 100% electrical efficiency, as long as thermal energy is supplied to the stack to maintain thermal balance.

Climate Change Mitigation – Carbon Capture:

In the SureSource Capture application, instead of ambient air, exhaust flue gas containing carbon dioxide can be routed to the air electrodes of the fuel cell. Those carbon dioxide molecules are transferred to the fuel electrodes, where carbon dioxide is concentrated allowing for easy removal and purification. Carbonate fuel cells are the only known fuel cell technology that can be utilized to capture carbon dioxide from an external source. Additionally, nitrogen oxides in the flue gas (an ozone precursor pollutant) will be largely destroyed as the gas flows through the fuel cell.

FuelCell Energy’s proprietary SureSource Capture platform produces power while capturing carbon dioxide, unlike other carbon capture applications which require power to operate.



https://www.globenewswire.com/en/news-release/2020/10/08/2105497/8041/en/FuelCell-Energy-Celebrates-National-Hydrogen-and-Fuel-Cell-Day-Providing-Hydrogen-for-Transportation-Delivering-Long-Duration-Energy-Storage-and-Carbon-Capture-Through-its-Advanced.html#:~:text=FuelCell%20Energy's%20proprietary%20SureSource%20Capture,change%20and%20improve%20air%20quality.



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