Journals
t1. Valera-Medina A, Morris S, Runyon J, Pugh DG, Marsh R, Beasley P, Hughes T, 2015. “Ammonia, Methane and Hydrogen for Gas Turbines”, Energy Procedia 75:118-123, ISSN: 1876-6102.
2. Valera-Medina A, Marsh R, Runyon J, Pugh D, Beasley P, Hughes T, Bowen P, 2016, “Ammonia–methane combustion in tangential swirl burners for gas turbine power generation” Applied Energy, DOI: 10.1016/j.apenergy.2016.02.073, ISSN: 0306-2619
3. Xiao H, Howard MS, Valera-Medina A, Dooley S, Bowen P, 2016. “A Study on Reduced Chemical Mechanisms of Ammonia/methane Combustion under Gas Turbine Conditions”, Energy and Fuels, DOI: 10.1021/acs.energyfuels.6b01556.
4. Xiao H, Howard MS, Valera-Medina A, Dooley S, Bowen P, 2017. “Reduced Chemical Mechanisms for Ammonia/methane Co-Firing for Gas Turbine Applications”, Energy Procedia 105 , pp. 1483-1488.
5. Xiao H, Valera-Medina A, Marsh R, Bowen P, 2017. “Numerical Study Assessing Various Ammonia/Methane Reaction Models for Use under Gas Turbine Conditions”, FUEL 196:344-351
6. Xiao H, Valera-Medina A, 2017. “An Evaluation of Detailed Chemical Kinetic Mechanisms for Premixed Combustion of Ammonia/Hydrogen Fuels”, ASME J for Gas Turbines and Power, DOI: 10.1115/1.4035911
7. Valera-Medina A, Pugh DG, Marsh R, Bulat G, Bowen P, 2017, “Preliminary Study of Lean Premixed combustion of Ammonia-Hydrogen for Swirling Gas Turbine Combustion”, Int J Hydrogen Energy 42(38): 24495-24503.
8. Xiao H, Howard MS, Valera-Medina A, Dooley S, Bowen P, 2017, “Reduced Chemical Mechanisms for Ammonia/Methane Co-firing for Gas Turbine Applications”, Energy Procedia, 10.1016/j/egypro.2017.03.441.
9. Xiao H, Valera-Medina A, Bowen P, 2017, “Modelling Combustion of Ammonia/Hydrogen Fuel Blends under Gas Turbine Conditions”, Energy and Fuels, 10.1021/acs.energyfuels.7b00709
10. Xiao H, Valera-Medina A, Bowen P, 2017, “Study on Premixed Combustion Characteristics of Co-firing Ammonia/Methane Fuels”, Energy, 10.1016/j.energy.2017.08.077
11. Xiao H, Valera-Medina A, Bowen P, Dooley S, 2017, “3D Simulation of Ammonia Combustion in a Lean Premixed Swirl Burner”, Energy Procedia 142: 1294-1299.
12. Pugh D, Valera-Medina A, Giles A, Marsh T, Bowen P, 2018. “Rich humidified NH3/H2 combustion in swirl burners”, Combustion Institute 10.1016/j.proci.2018.07.091
13. Xiao H, Valera-Medina A, Bowen P, 2018. “Study on Characteristics of Co-firing Ammonia/Methane Fuels under Oxygen Enriched Combustion Conditions”, Thermal Science, doi.org/10.1007/s11630-018-2-7
14. Honzawa, T et al. 2019 “Predictions of NO and CO emissions in ammonia/methane/air combustion by LES using a non-adiabatic flamelet generated manifold”, Energy 186:115771.
15. Valera-Medina A, Xiao H, Owen-Jones M, David B, Bowen P, 2018. “Ammonia to Power: Review”, Progress in Combustion Science and Energy 69:63-102.
16. Valera-Medina A, Xiao H, Gutesa M, Pugh D, Giles A, Bowen P, 2019. “Premixed Ammonia/Hydrogen Swirl Combustion under Rich Fuel Conditions for Gas Turbines Operation”, Int J Hydrogen Energy 44(16):8615-8626.
17. Gutesa M, Vigueras-Zuniga MO, Buffi M, Seljak T, Valera-Medina A, 2019. Fuel Rich Ammonia/Hydrogen Injection for Humidified Gas Turbines, Applied Energy 251:113334.
18. Vigueras-Zuniga et al. 2020 “Numerical Predictions of a Swirl Combustor using Complex Chemistry Fueled with Ammonia/Hydrogen Blends” Energies, 13(2), 288. doi.org/10.3390/en13020288.
19. Xiao H, Lai S, Valera-Medina A, et al. 2020. Experimental and modeling study on ignition delay of ammonia/methane fuels, Int J Energy Research, DOI: 10.1002/er.5460.
20. Xiao, H, Lai S, Valera-Medina A, et al. 2020. Study on Counterflow Premixed Flames using High Concentration Ammonia Mixed with Methane, FUEL. DOI: doi.org/10.1016/j.fuel.2020.117902.
21. Elishav O, Mosotski B, Miller E, Valera-Medina A, et al. 2020. Progress and Prospective of Nitrogen-based Alternative Fuels, Chemical reviews, DOI: 10.1021/acs.chemrev.9b00538.
22. Xiao H, Lai S, Valera-Medina A, et al. 2020. Experimental and modeling study on ignition delay of ammonia/methane fuels, Int J Energy Research, DOI: 10.1002/er.5460.
23. Pugh D., et al. 2020. An Investigation of Ammonia Primary Flame Combustor Concepts for Emissions Reduction with OH*, NH2* and NH* Chemiluminescence at Elevated Conditions, Proceedings of the Combustion Institute. Doi: 10.1016/j.proci.2020.06.310
24. Pugh et al. 2020. Emissions performance of staged premixed and diffusion combustor concepts for an NH3/air flame with and without reactant humidification, ASME J Engineering for Gas Turbines and Power, accepted.
25. Guteša, B.et al. 2021. Humidified ammonia/hydrogen RQL combustion in a trigeneration gas turbine cycle. Energy Conversion and Management 27, article number: 113625. (10.1016/j.enconman.2020.113625)
26. Mashruk, S., Xiao, H. and Valera-Medina, A. 2021. Rich-Quench-Lean model comparison for the clean use of humidified ammonia/hydrogen combustion systems. International Journal of Hydrogen Energy 46(5), pp. 4472-4484. (10.1016/j.ijhydene.2020.10.204)
27. Gutesa-Bozo M, Valera-Medina A, 2020. Prediction of Novel Humified Gas Turbine Cycle Parameters for Ammonia/Hydrogen Fuels, Energies, 13, 5749; doi: 10.3390/en13215749.
28. Pugh, D.et al. 2021. Emissions performance of staged premixed and diffusion combustor concepts for an NH3/air flame with and without reactant humidification. Journal of Engineering for Gas Turbines and Power 143(5), article number: 51012. (10.1115/1.4049451)
29. Razon, L. F. and Valera-Medina, A. 2021. A comparative environmental life cycle assessment of the combustion of ammonia/methane fuels in a tangential swirl burner. Frontiers in Chemical Engineering 3, article number: 631397. (10.3389/fceng.2021.631397)
30. Valera-Medina, A.et al. 2021. Review on ammonia as a potential fuel: from synthesis to economics. Energy and Fuels (10.1021/acs.energyfuels.0c03685)
31. Meng-Choung C, et al. 2021. Advancements of combustion technologies in the ammonia-fuelled engines. Energy Conversion and Management 244 , 114460
32. Guati-Rojo, A.et al. 2021. Public attitudes and concerns about ammonia as an energy vector. Energies 14(21), article number: 7296. (10.3390/en14217296)
33. Vigueras-Zuniga, M. O.et al. 2021. Methane/ammonia radical formation during high temperature reactions in swirl burners. Energies 14(20), article number: 6624. (10.3390/en14206624)
34. Mashruk, S.et al. 2021. Numerical analysis on the evolution of NH2 in ammonia/hydrogen swirling flames and detailed sensitivity analysis under elevated conditions. Combustion Science and Technology (10.1080/00102202.2021.1990897)
35. Boero, A. J.et al. 2021. Environmental life cycle assessment of ammonia‐based electricity. Energies 14(20), article number: 6721. (10.3390/en14206721)
36. Mounaïm-Rousselle, C.et al. 2021. Ammonia as fuel for transportation to mitigate zero carbon impact. In: Kalghatgi, G. et al. eds. Engines and Fuels for Future Transport. Energy, Environment, and Sustainability Springer, pp. 257-279., (10.1007/978-981-16-8717-4_11)
37. Mashruk, S.et al. 2022. Combustion features of CH4/NH3/H2 ternary blends. International Journal of Hydrogen Energy (10.1016/j.ijhydene.2022.03.254)
38.Kovaleva, M.et al. 2022. Numerical and experimental study of product gas characteristics in premixed ammonia/methane/air laminar flames stabilised in a stagnation flow. Fuel Communications 10, article number: 100054. (10.1016/j.jfueco.2022.100054)
39. Mashruk, S., Kovaleva, M., Alnasif, A., Chong, C. T., Hayakawa, A., Okafor, E. C. and Valera Medina, A. 2022. Nitrogen oxide emissions analyses in ammonia/hydrogen/air premixed swirling flames. Energy 260, article number: 125183. (10.1016/j.energy.2022.125183)
40. Shahsavari, M., Konnov, A. A., Valera Medina, A. and Jangi, M. 2022. On nanosecond plasma-assisted ammonia combustion: Effects of pulse and mixture properties. Combustion and Flame 245, article number: 112368. (10.1016/j.combustflame.2022.112368)
41. Mashruk, S., Okafor, E., Kovaleva, M., Alnasif, A., Pugh, D., Hayakawa, A. and Valera Medina, A. 2022. Evolution of N2O production at lean combustion condition in NH3/H2/air premixed swirling flames. Combustion and Flame 244, article number: 112299. (10.1016/j.combustflame.2022.112299)
42. Kovaleva, M., Dziedzic, D., Mashruk, S., Evans, S., Valera Medina, A. and Galindo-Nava, E. 2022. The evaluation of ammonia/hydrogen combustion on the H permeation and embrittlement of nickel-base superalloys. Presented at: American Society of Mechanical Engineers, Rotterdam, Netherlands, 13 - 17 June 2022Proceedings of ASME Turbo Expo 2022. ASME pp. 82239., (10.1115/GT2022-82239)
43. Mashruk, S., Zhu, X., Roberts, W. L., Guiberti, T. F. and Valera Medina, A. 2022. Chemiluminescent footprint of premixed ammonia-methane-air swirling flames. Proceedings of the Combustion Institute (10.1016/j.proci.2022.08.073)
44. Mashruk, S., Zitouni, S., Brequigny, P., Mounaim-Rousselle, C. and Valera Medina, A. 2022. Combustion performances of premixed ammonia/hydrogen/air laminar and swirling flames for a wide range of equivalence ratios. International Journal of Hydrogen Energy (10.1016/j.ijhydene.2022.09.165)
45. Alnasif, A., Mashruk, S., Kovaleva, M., Wang, P. and Valera-Medina, A. 2022. Experimental and numerical analyses of nitrogen oxides formation in a high ammonia-low hydrogen blend using a tangential swirl burner. Carbon Neutrality 1, article number: 24. (10.1007/s43979-022-00021-9)
46. Hayakawa, A. et al. 2022. Experimental and numerical study of product gas and N2O emission characteristics of ammonia/hydrogen/air premixed laminar flames stabilized in a stagnation flow. Proceedings of the Combustion Institute
47. Mong, G. R. et al. 2023. Fuel-lean ammonia/biogas combustion characteristics under the reacting swirl flow conditions. Fuel 331(2), article number: 125983. (10.1016/j.fuel.2022.125983)
48. Shahsavari M, et al. 2023. On nanosecond plasma-assisted ammonia combustion: effects of pulse and mixture properties, Combustion and Flame, doi.org/10.1016/j.combustflame.2022.112368.
49. Mashruk S, et al. 2023. Chemiluminescent footprint of premixed ammonia-methane-air swirling flames, PROCI-D-22-00623. Doi: 10.1016/j.proci.2022.08.073
50. Mashruk S, et al. 2023. Combustion performances of premixed ammonia/hydrogen/air laminar and swirling flames for a wide range of equivalence ratios, Int J Hydrogen Energy. doi.org/10.1016/j.ijhydene.2022.09.165.
51. Yu C, et al. 2023. Flame-Solid-Interaction: Thermo-mechanical analysis for a steady stagnation flow stoichiometric NH3/H2 flame at a plane wall, Energy and Fuels. doi.org/10.1021/acs.energyfuels.2c03804.
52. Alnasif A, et al. 2023. Experimental and numerical comparison of currently available reaction mechanisms for laminar flame speed in 70/30 (%vol.) NH3/H2 flames, Applications in Energy and Combustion Science, doi.org/10.1016/j.jaecs.2023.100139.
53. Shahsavari, M., Konnov, A. A., Bai, X., Valera Medina, A., Li, T. and Jangi, M. 2023. Synergistic effects of nanosecond plasma discharge and hydrogen on ammonia combustion. Fuel 348, article number: 128475. (10.1016/j.fuel.2023.128475)
54. Yu, C. et al. 2023. Investigation of spark ignition processes of laminar strained premixed stoichiometric NH3-H2-air flames. Journal of Loss Prevention in the Process Industries 83, article number: 105043. (10.1016/j.jlp.2023.105043).
55. David, W. I. F. et al. 2023. 2023 Roadmap on ammonia as a carbon-free fuel. JPhys Energy, 10.1088/2515-7655/ad0a3a.
56. Chaturvedi S, Santhosh R, Mashruk S, Yadav R and Valera-Medina A. 2023. Prediction of NOx emissions and pathways in premixed ammonia-hydrogen-air combustion using CFD-CRN methodology. Journal of the Energy Institute, 10.1016/j.joei.2023.101406.
57. Valera-Medina, A. et al. 2024. Ammonia combustion in furnaces: A review. International Journal of Hydrogen Energy 49(Part B), pp. 1597-1618. (10.1016/j.ijhydene.2023.10.241)
Conferences
1. Valera-Medina A. Ammonia Gas Turbines, NH3 European Conference, Rotterdam, Netherlands, 2017.
2. Gutesa M, Vigueras MO, Buffi M, Seljak T, Valera-Medina A, Humidified Ammonia/Hydrogen Gas Turbine Cycle, SDEWES East Europe, Novi Sad, Serbia, June 2018.
3. Goktepe B, Valera-Medina A, Bowen P, Ammonia-methane power generation for CO2 mitigation in Steelwork processes, EnerStock, Adana, Turkey, 2018.
4. Valera-Medina A, et al. Progress in Ammonia Gas Turbines, European Turbine Network Int. Conference, Brussels, Berligum, 2018.
5. Valera-Medina A, Li R, He G, Qin F, Konnov AA. Reduced Chemical Kinetics for CDF Studies of Ammonia-Hydrogen Blends in Gas Turbine Swirl Combustors, Ammonia Workshop SMART CATS, Lisbon, Portugal, 2019.
6. Valera-Medina A. Ammonia as Gas Turbine Fuel, Int. Energy Agency, Combustion Committee, Nice, France, 2019.
7. Hewlett S, Pugh D, Valera-Medina A, Bowen P. 2019. Gas Turbine Co-Firing of Steelworks Ammonia with Coke Oven Gas or Methane: A fundamental and Cycle Analysis, ASME, GT2019-91404
8. Gutesa M, Valera-Medina A. Novel Humidified Ammonia/Hydrogen Gas Turbine Cycles. SmartCATS, Naples, Italy, Feb. 2019.
9. Valera-Medina A. Ammonia for a Carbon Free Future, Clean Air, Sep. 2019.
10. Gutesa M, Valera-Medina A. Humidified Ammonia/Hydrogen Trigeneration Gas Turbine Cycles, International SDEWES 2019.
11. Alrebei OF, Al-Doboon A, Valera-Medina A, Bowen P. CARSOXY combined with Ammonia Production for Efficient, Profitable CCS cycles, GTSJ 2019, Tokyo, Japan, 2019.
12. Pugh D, Runyon J, Bowen P, Giles A, Goktepe B, Valera-Medina A, Marsh R, Morris S, Hewlett S. Emissions comparison of staged premixed and diffusion combustor concept with an NH3/Air flame and reactant humidification, ASME 2020, London, GT2020-14953.
13. Hewlett S, Pugh D, Bowen P, Valera-Medina A. Industrial Wastewater as an Enabler of Green Ammonia to Power via Gas Turbine Technology, ASME 2020, London, GT2020-14581.
14. Warwick-Brown D, Berge-Karevoll H, Al Abdullatif M, Valera-Medina A, Assessing the Techno-Economic Feasibility of a Wind-Tidal Lagoon Hybrid System for Green Ammonia Storage in Wales, UK, CIDSER, Veracruz, Mexico, 2020.
15. Xiao H, He W, Lai S, Valera-Medina A, Mashruk S, Auto-ignition study on methane and ammonia fuel blends, Int. Conf. of Applied Energy, Bangkok, Thailand, 2020.
16. Valera-Medina A, Mashruk S, Xiao H, Chiong MC, Chong CT, Ammonia/Hydrogen for Zero-Carbon Gas Turbine Power, 8th Int Conference of Fluid Dynamics, Tohoku, Japan, 2020
17. Pugh, D.et al. 2021. Emissions performance of staged premixed and diffusion combustor concepts for an NH3/air flame with and without reactant humidification. Presented at: ASME Turbo Expo 2020: Turbomachinery Technical Conference & Exposition, Virtual, 21-25 September 2020ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition, Vol. 4A. ASME, (10.1115/GT2020-14953)
18. Hewlett, S. G.et al. 2021. Industrial wastewater as an enabler of green ammonia to power via gas turbine technology. Presented at: Turbomachinery Technical Conference & Exposition (TURBO EXPO 2020), Virtual, 21-25 September 2020Proceedings of ASME Turbo Expo 2020 Turbomachinery Technical Conference and Exposition. ASME pp. GT2020-14581., (10.1115/GT2020-14581)
19. Kovaleva, M., Mashruk, S. and Valera Medina, A. 2021. Experimental study of ammonia addition in premixed methane flames. Presented at: 38th International Symposium on Combustion, Adelaide, Australia, 24-29 January 2021.
20. Kovaleva, M., Mashruk, S. and Valera Medina, A. 2021. Empirical and numerical investigation of turbulent flows in a novel design burner for ammonia/hydrogen combustion. Presented at: European Combustion Meeting (ECM 2021), Virtual, 14-15 April 2021.
21. Kovaleva, M.et al. 2021. The development and testing of a CH4/NH3/H2 combustion system for a 50kW micro gas turbine. Presented at: ASME Turbomachinery Technical Conference & Exposition (Turbo Expo 2021), Virtual, 7-11 June 2021.
32. Zitouni, S.et al. 2021. Ammonia blended fuels - energy solutions for a green future. Presented at: European Turbine Network (ETN) International Gas Turbine Conference, Brussels, Belgium, 11-15 October 2021.
33. Mashruk, S.et al. 2021. Nitrogen Oxides as a by-product of Ammonia/Hydrogen combustion regimes. Chemical Engineering Transactions 89, pp. 613-618. (10.3303/CET2189103)
34. Mashruk, S.et al. 2021. Ammonia/hydrogen/methane characteristic profiles for atmospheric combustion applications. Presented at: 13th International Conference on Applied Energy (ICAE 2021), Bangkok, Thailand, 29 November - 02 December 2021.
35. Mao, C.et al. 2021. Effects of equivalence ratio, inlet temperature and pressure on NO emissions for two stage combustion of NH3/H2 fuel mixture. Presented at: 13th Asia-Pacific Conference on Combustion (ASPACC 2021), Abu Dhabi, United Arab Emirates, 05-09 December 2021.
36. Alnasif, A., Zitouni, S., Mashruk, S., Brequigny, P., Kovaleva, M., Mounaim-Rousselle, C. and Valera-Medina, A. 2022. Experimental and numerical comparison of currently available reaction mechanisms for laminar flame speed in hydrogen/ammonia flames. Presented at: SET2022: International Conference on Sustainable Energy and Technologies, 16-18 August 202219th International Conference on Sustainable Energy Technologies – SET 2022
37. Chaturvedi, S., Rudrasetty, S., Mashruk, S. and Valera Medina, A. 2022. CFD-CRN modelling for prediction of pollutants in NH3/H2/air combustion. Presented at: 14th International Conference on Applied Energy, 8 - 11 August 2022.
38. Xiao, H. et al. 2022. Effects of carbon dioxide on combustion of methane/hydrogen in a swirl combustor. Presented at: 14th International Conference on Applied Energy, 8 - 11 August 2022.
39. Kovaleva, M., Dziedzic, D., Mashruk, S., Evans, S., Valera Medina, A. and Galindo-Nava, E. 2022. The evaluation of ammonia/hydrogen combustion on the H permeation and embrittlement of nickel-base superalloys. Presented at: American Society of Mechanical Engineers, Rotterdam, Netherlands, 13 - 17 June 2022Proceedings of ASME Turbo Expo 2022. ASME pp. 82239., (10.1115/GT2022-82239).
40. Yu C., et al. 2022. Investigation of the safety-related ignition processes of laminar strained premixed NH3-H2-air flames, ISHPMIE Conference, Braunschweig, Germany.
41. Alnasif A., et al. 2022. Experimental and Numerical Comparison of Currently Available Reaction Mechanisms for Laminar flame speed in Hydrogen/Ammonia Flames, SET Conference, Istanbul, Turkey.
42. Xiao H. et al. 2022. Effects of Carbon Dioxide on Combustion of Methane/Hydrogen in a Swirl Combustor, ICAE, Bochum, Germany.
43. Rudrasseti S. et al. 2022. CFD-CRN Modelling for Prediction of Pollutants in NH3/H2/Air Combustion, ICAE, Bochum, Germany.
44. Xiao H., et al. Performance Analysis of Gas Turbine using Hydrogen-added Natural Gas, 12th Int. Conf. on Power and Energy Systems, ICPES, Guangzhou, China, 2022, ES2626.
45. Mazzota L, et al. Modelling Ammonia-Hydrogen-Air Combustion and Emission Characteristics of a Generic Swirl Burner, ASME Turbo Expo 2022, GT2023-102803, accepted.
46. Pugh D, et al. Influence of Steam and Elevated Ambient Conditions on N2o in a Premixed Swirling Nh3/H2 Flame, ASME Turbo Expo 2022, GT2023-102452, accepted.
47. Pugh D, et al. Influence of Variable Swirl on Emissions in a Non-Premixed Fuel-Flexible Burner at Elevated Ambient Conditions, ASME Turbo Expo 2022, GT2023-102457, accepted.
48. Castellani S., et al. Numerical Modelling of Swirl Stabilised Lean-Premixed H2-Ch4 Flames With the Artificially Thickened Flame Model, ASME Turbo Expo 2022, GT2023-101994, accepted.
49. Alnasif A, et al. Analysis of the Performance of Kinetic Reaction Mechanisms in Estimating N2O Mole Fractions in 70/30 vol% NH3/H2 Premixed Flames, 15th Int. Conf. Combustion Technologies for Clean Environment, Lisbon, Portugal, 2023.
50. Valera-Medina et al. Use of cracked ammonia for the replacement of propane in industrial boilers, INFUB-14, Algarve, Portugal, 2024.
51. Davies J. et al. Effect of Heat Loss on Emissions from Cracked Ammonia in Swirling Flames, ICTAM2024, Daegu, Korea, August 25-30, 2024.
Books and Briefings
1. Valera-Medina A, Roldan A, 2020. "Ammonia from Steelworks", Chapter in "Sustainable Ammonia", Springer.
2. Valera-Medina A, Banares-Alcazar R, 2020. "Techno-economic Challenges of Ammonia as Energy Vector", ELSEVIER, 340pp. ISBN: 9780128205600.
3. David WF, et al. Ammonia: zero-carbon fertiliser, fuel and energy store, 2020, Royal Society Policy Briefing. Available Online. https://royalsociety.org/topics-policy/projects/low-carbon-energy-programme/green-ammonia/
4. Valera-Medina A, Mashruk S, Pugh D, Bowen P, 2023. "Ammonia Fuel" Chapter in "Renewable Energy", Cambridge Press.
5. Smith CL et al. Large scale electricity storage, 2023. Royal Society Policy Briefing. Available Online. https://royalsociety.org/-/media/policy/projects/large-scale-electricity-storage/Large-scale-electricity-storage-policy-briefing.pdf
6. Valera-Medina A, Rousselle C, Magnotti G, Bellotti D, De Joannon M, 2024 (Expected). "Ammonia Combustion", IET.