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Ammonia combustion engines: latest research

The journey from the laboratory bench to the shop floor continues apace in 2021, as researchers deepen their understanding of ammonia combustion within engines. The team at Université d’Orléans has published several pieces of research already this year, with interesting results on operating limits, spray characteristics and flame propagation.

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Low-Carbon Fuels for Power Generation

The EPRI-GTI Low Carbon Resources Initiative (LCRI) has nine technical subcommittees.  The Power Generation subcommittee currently has 26 active members representing electric, gas and combined electric & gas utilities as well as two gas turbine Original Equipment Manufacturers (OEM).  Studies, testing and demonstration projects utilizing hydrogen and ammonia as alternate low-carbon energy carriers dominates member interests with hydrogen being most significant. Next steps will include scoping specific topics for “no-regret” studies and soliciting inputs for creating a five-year power generation roadmap.  Current position of the power generation company members:   Alternate Energy Carrier (AEC). Applied R&D on H2 and H2…

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Starfire Energy’s ammonia cracking and cracked gas purification technology

Ammonia cracking is important for both combustion and fuel cell applications. Starfire Energy has verified that a blend of 70% ammonia + 30% cracked ammonia can burn well in a conventional natural gas burner with very low ammonia slip and acceptable NOx using a stoichiometric fuel-air mixture. A 10 MW turbine or internal combustion engine using such a blend will need about 1.44 tonnes of cracked ammonia per hour. Starfire Energy’s monolith-supported cracking catalyst may be ideally suited for this application. Fully cracked ammonia retains several thousand parts per million of ammonia due to thermodynamic limitations. Residual ammonia can damage…