Ammonia-hydrogen-air gas turbine cycle and control analyses

Aalrebei, Odi Fawwaz; Assaf, Anwar Hamdan Al; Amhamed, Abdulkarem; Swaminathan, Nedunchezhian; Hewlett, Sally

doi:10.1016/j.ijhydene.2021.12.190

Cited by 28 publications

(4 citation statements)

References 27 publications

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“…The product derived from this process is commonly referred to as synthetic ammonia. Ammonia (NH3) is produced as a byproduct of coal combustion [2].…”

Section: The Importance Of Ammonia (Nh3)mentioning

confidence: 99%

NH3-H2-Working Fluid-based Shell and Tube Heat Exchanger and the H2O-to-H2O Helical Heat Exchanger: A Novel Integration to Ammonia Production Plants

2024

jjmie

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This study assesses global efforts to enhance existing ammonia plants and explores the feasibility of integrating heat exchangers at different stages of ammonia production. Based on this, the researchers analyzed two heat exchange systems, namely the NH3-H2 shell and tube heat exchanger and the H2O-to-H2O helical heat exchanger, in order to investigate their objectives. This study investigated the use of different NH3-H2 compositions as working fluids in shell and tube heat exchangers, specifically focusing on the shell and tube heat exchanger. The ASPEN HYSYS software was utilized for this analysis. This investigation conducted a comprehensive analysis of different sensitivity analyses to assess the influence of ammonia efficiency on the cooling process. The utilization of shell and tube heat exchangers in cooling applications, specifically those with high ammonia concentrations, can result in a more compact design for the heat exchanger. The observed outcome can be explained by the advantageous characteristics of ammonia, such as its higher heat capacity and improved heat transport properties compared to water. Furthermore, the study utilized a computational fluid dynamics (CFD) approach, specifically employing ANSYS Fluent for the analysis. The helical design of the heat exchanger efficiently distributes heat flux under specific conditions. The heat flow decreases gradually along the length of the exchanger due to this distribution.

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“…The product derived from this process is commonly referred to as synthetic ammonia. Ammonia (NH3) is produced as a byproduct of coal combustion [2].…”

Section: The Importance Of Ammonia (Nh3)mentioning

confidence: 99%

NH3-H2-Working Fluid-based Shell and Tube Heat Exchanger and the H2O-to-H2O Helical Heat Exchanger: A Novel Integration to Ammonia Production Plants

2024

jjmie

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“…This secondary fuel might serve solely as an ignition aid or be part of a continuous fuel blend. Studies have indicated that the efficiency of ammonia combustion can be significantly improved with the inclusion of auxiliary fuels, such as hydrogen and methane [81][82][83].…”

Section: Ammonia In Gas Turbinesmentioning

confidence: 99%

“…On the suction surface of the vane or blade, the flow changes from laminar to turbulent and the heat transfer coefficients sharply increase, while on the pressure surface, the heat transfer increases as the flow accelerates around the blade. The front edge of the vane or blade has high heat transfer coefficients, which decrease as the flow travels along the blade [73,81,82]. Accurately predicting the metal temperature of turbine blades and vanes is crucial to their lifespan and to avoid premature failure.…”

mentioning

confidence: 99%

High-Temperature Materials for Complex Components in Ammonia/Hydrogen Gas Turbines: A Critical Review

Alnaeli,

Alnajideen,

Navaratne

et al. 2023

Energies

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This article reviews the critical role of material selection and design in ensuring efficient performance and safe operation of gas turbine engines fuelled by ammonia–hydrogen. As these energy fuels present unique combustion characteristics in turbine combustors, the identification of suitable materials becomes imperative. Detailed material characterisation is indispensable for discerning defects and degradation routes in turbine components, thereby illuminating avenues for improvement. With elevated turbine inlet temperatures, there is an augmented susceptibility to thermal degradation and mechanical shortcomings, especially in the high-pressure turbine blade—a critical life-determining component. This review highlights challenges in turbine design for ammonia–hydrogen fuels, addressing concerns like ammonia corrosion, hydrogen embrittlement, and stress corrosion cracking. To ensure engine safety and efficacy, this article advocates for leveraging advanced analytical techniques in both material development and risk evaluation, emphasising the interplay among technological progress, equipment specifications, operational criteria, and analysis methods.

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“…10,11 Preventive and remediation methods can reduce CO 2 emissions. The preventive approach includes using renewable energy systems and improving systems efficiency, 12 while the remediation includes capturing, storing, and utilizing CO 2 . 13 Although the whole world exerts efforts to reduce CO 2 emission by preventive methods, billions of tons of CO 2 is still being emitted into the atmosphere.…”

Section: Introductionmentioning

confidence: 99%

Emerging trends in direct air capture of CO₂: a review of technology options targeting net-zero emissions

et al. 2023

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Ammonia-hydrogen-air gas turbine cycle and control analyses

Cited by 28 publications

References 27 publications

NH3-H2-Working Fluid-based Shell and Tube Heat Exchanger and the H2O-to-H2O Helical Heat Exchanger: A Novel Integration to Ammonia Production Plants

NH3-H2-Working Fluid-based Shell and Tube Heat Exchanger and the H2O-to-H2O Helical Heat Exchanger: A Novel Integration to Ammonia Production Plants

High-Temperature Materials for Complex Components in Ammonia/Hydrogen Gas Turbines: A Critical Review

Emerging trends in direct air capture of CO₂: a review of technology options targeting net-zero emissions

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Ammonia-hydrogen-air gas turbine cycle and control analyses

Cited by 28 publications

References 27 publications

NH3-H2-Working Fluid-based Shell and Tube Heat Exchanger and the H2O-to-H2O Helical Heat Exchanger: A Novel Integration to Ammonia Production Plants

NH3-H2-Working Fluid-based Shell and Tube Heat Exchanger and the H2O-to-H2O Helical Heat Exchanger: A Novel Integration to Ammonia Production Plants

High-Temperature Materials for Complex Components in Ammonia/Hydrogen Gas Turbines: A Critical Review

Emerging trends in direct air capture of CO2: a review of technology options targeting net-zero emissions

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Emerging trends in direct air capture of CO₂: a review of technology options targeting net-zero emissions