Gas Turbines with special emphasis on hydrogen combustion

A: Hydrogen combustion in gas turbines presents several challenges. First, hydrogen has a very high flame speed compared to natural gas, which increases the risk of flashback into the premixer or burner components. Second, hydrogen flames produce higher flame temperatures, which can increase NOx emissions unless carefully managed through techniques like steam or water injection and lean premixed combustion. Third, hydrogen's low volumetric energy density requires modifications in fuel storage and delivery systems. Finally, material compatibility and safety concerns due to hydrogen's diffusivity and embrittlement effects must be addressed. For more detailed technical insights, refer to the DOE Hydrogen Program website: https://www.hydrogen.energy.gov/pdfs/review19/fc018_mace.pdf