An innovative concept for the complete and low-NOx combustion of non-carbon eco-fuels using a thermoacoustically-driven, hydrogen-powered pilot stage: GT2022-80886
Nina Paulitsch, Fabrice Giuliani, Andrea Hofer, Johannes Hofer, Lukas Andracher
Science Park Graz (SPG) (98810)
The problem of climate change, triggered by a high concentration of pollutants in the atmosphere, and the scarcity of fossil resources, increases the need of low emission thermal utilisation of novel, non-carbon eco-fuels such as hydrogen, ammonia (both for energy and propulsion) or hydrogen sulphide (sulphuric acid production). While all of these listed eco-fuels have the potential to decarbonise industry and the energy sector, they also pose demanding challenges regarding combustion. To address these challenges the idea is to combine the advantages of current low-NOx technologies in terms of ultra-lean combustion with a precisely controlled, forced flame turbulence generated by a pulsation actuator. The aim is to develop a safe and highly digitalised combustion technology, including a two-staged burner design for application in the megawatt range with multi eco-fuel capacities and a fully automated control loop for the combustion process.
To achieve effective thermo-acoustic modulation an actuator type siren is used. Further improvements towards the demanding application in industry were done leading to the latest siren model, Siren E. A siren is a robust pulsation apparatus that generates powerful noise levels and effective flow pulsations under elevated pressure and temperature conditions [1–3]. By scanning through a certain frequency range during combustion, one is able to detect eigenfrequencies of the flame which increases flame turbulence when excited. The effective flow control of the siren can guarantee a complete burnout of the partially toxic eco-fuels. In addition, gaseous pollutants such as NOx can be reduced to a minimum, since the flame pulsation process provides the opportunity to run reliably a mixture with an otherwise unstable combustion process. The Siren E with its new features is introduced in this paper in detail. To verify the method for eigenfrequency detection, initial combustion tests are first carried out with propane on the so-called MethaNull test rig. There, the main aspect is to meet the same eigenfrequencies as in a previous work. Then, initial combustion tests with premixed hydrogen are performed up to a thermal power of 10 kW. First, different methods for the injection of hydrogen are tested resulting in a prioritised premixed variant. Using this premixing method in the test setup the response to thermo-acoustic excitation via loudspeaker and siren is investigated. Prior to the experiments, a numerical study was performed on a model representing a simplified pilot stage. All numerical and experimental results are presented in detail in this paper.
Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine
American Society of Mechanical Engineers (ASME)
https://doi.org/10.1115/GT2022-80886
2022 Turbomachinery Technical Conference & Exposition
: ASME Turbo Expo 2022 - Rotterdam, Netherlands
Proceedings of the ASME Turbo Expo
ASME Turbo Expo 2022
10.1115/GT2022-80886
Paulitsch, N., Giuliani, F., Hofer, A., Hofer, J., & Andracher, L. (2022). An innovative concept for the complete and low-NOx combustion of non-carbon eco-fuels using a thermoacoustically-driven, hydrogen-powered pilot stage: GT2022-80886. In Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine (Vol. 2). [V002T03A006] (Proceedings of the ASME Turbo Expo; Vol. 2). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/GT2022-80886
An innovative concept for the complete and low-NOx combustion of non-carbon eco-fuels using a thermoacoustically-driven, hydrogen-powered pilot stage : GT2022-80886. / Paulitsch, Nina; Giuliani, Fabrice; Hofer, Andrea et al.
Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine. Vol. 2 American Society of Mechanical Engineers (ASME), 2022. V002T03A006 (Proceedings of the ASME Turbo Expo; Vol. 2).
Paulitsch, N, Giuliani, F, Hofer, A, Hofer, J & Andracher, L 2022, An innovative concept for the complete and low-NOx combustion of non-carbon eco-fuels using a thermoacoustically-driven, hydrogen-powered pilot stage: GT2022-80886. in Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine. vol. 2, V002T03A006, Proceedings of the ASME Turbo Expo, vol. 2, American Society of Mechanical Engineers (ASME), 2022 Turbomachinery Technical Conference & Exposition
, Rotterdam, Netherlands, 13/06/22. https://doi.org/10.1115/GT2022-80886
Paulitsch N, Giuliani F, Hofer A, Hofer J, Andracher L. An innovative concept for the complete and low-NOx combustion of non-carbon eco-fuels using a thermoacoustically-driven, hydrogen-powered pilot stage: GT2022-80886. In Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine. Vol. 2. American Society of Mechanical Engineers (ASME). 2022. V002T03A006. (Proceedings of the ASME Turbo Expo). https://doi.org/10.1115/GT2022-80886
Paulitsch, Nina ; Giuliani, Fabrice ; Hofer, Andrea et al. / An innovative concept for the complete and low-NOx combustion of non-carbon eco-fuels using a thermoacoustically-driven, hydrogen-powered pilot stage : GT2022-80886. Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine. Vol. 2 American Society of Mechanical Engineers (ASME), 2022. (Proceedings of the ASME Turbo Expo).
@inproceedings{0f627685bbb742d883b74dcc3f92ed8c,
title = "An innovative concept for the complete and low-NOx combustion of non-carbon eco-fuels using a thermoacoustically-driven, hydrogen-powered pilot stage: GT2022-80886",
abstract = "The problem of climate change, triggered by a high concentration of pollutants in the atmosphere, and the scarcity of fossil resources, increases the need of low emission thermal utilisation of novel, non-carbon eco-fuels such as hydrogen, ammonia (both for energy and propulsion) or hydrogen sulphide (sulphuric acid production). While all of these listed eco-fuels have the potential to decarbonise industry and the energy sector, they also pose demanding challenges regarding combustion. To address these challenges the idea is to combine the advantages of current low-NOx technologies in terms of ultra-lean combustion with a precisely controlled, forced flame turbulence generated by a pulsation actuator. The aim is to develop a safe and highly digitalised combustion technology, including a two-staged burner design for application in the megawatt range with multi eco-fuel capacities and a fully automated control loop for the combustion process.To achieve effective thermo-acoustic modulation an actuator type siren is used. Further improvements towards the demanding application in industry were done leading to the latest siren model, Siren E. A siren is a robust pulsation apparatus that generates powerful noise levels and effective flow pulsations under elevated pressure and temperature conditions [1–3]. By scanning through a certain frequency range during combustion, one is able to detect eigenfrequencies of the flame which increases flame turbulence when excited. The effective flow control of the siren can guarantee a complete burnout of the partially toxic eco-fuels. In addition, gaseous pollutants such as NOx can be reduced to a minimum, since the flame pulsation process provides the opportunity to run reliably a mixture with an otherwise unstable combustion process. The Siren E with its new features is introduced in this paper in detail. To verify the method for eigenfrequency detection, initial combustion tests are first carried out with propane on the so-called MethaNull test rig. There, the main aspect is to meet the same eigenfrequencies as in a previous work. Then, initial combustion tests with premixed hydrogen are performed up to a thermal power of 10 kW. First, different methods for the injection of hydrogen are tested resulting in a prioritised premixed variant. Using this premixing method in the test setup the response to thermo-acoustic excitation via loudspeaker and siren is investigated. Prior to the experiments, a numerical study was performed on a model representing a simplified pilot stage. All numerical and experimental results are presented in detail in this paper.",
author = "Nina Paulitsch and Fabrice Giuliani and Andrea Hofer and Johannes Hofer and Lukas Andracher",
doi = "10.1115/GT2022-80886",
series = "Proceedings of the ASME Turbo Expo",
publisher = "American Society of Mechanical Engineers (ASME)",
booktitle = "Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine",
note = "2022 Turbomachinery Technical Conference &amp; Exposition<br/> : ASME Turbo Expo 2022, ASME Turbo Expo 2022 ; Conference date: 13-06-2022 Through 17-06-2022",
T1 - An innovative concept for the complete and low-NOx combustion of non-carbon eco-fuels using a thermoacoustically-driven, hydrogen-powered pilot stage
T2 - 2022 Turbomachinery Technical Conference &amp; Exposition<br/>
AU - Paulitsch, Nina
AU - Giuliani, Fabrice
AU - Hofer, Andrea
AU - Hofer, Johannes
AU - Andracher, Lukas
N2 - The problem of climate change, triggered by a high concentration of pollutants in the atmosphere, and the scarcity of fossil resources, increases the need of low emission thermal utilisation of novel, non-carbon eco-fuels such as hydrogen, ammonia (both for energy and propulsion) or hydrogen sulphide (sulphuric acid production). While all of these listed eco-fuels have the potential to decarbonise industry and the energy sector, they also pose demanding challenges regarding combustion. To address these challenges the idea is to combine the advantages of current low-NOx technologies in terms of ultra-lean combustion with a precisely controlled, forced flame turbulence generated by a pulsation actuator. The aim is to develop a safe and highly digitalised combustion technology, including a two-staged burner design for application in the megawatt range with multi eco-fuel capacities and a fully automated control loop for the combustion process.To achieve effective thermo-acoustic modulation an actuator type siren is used. Further improvements towards the demanding application in industry were done leading to the latest siren model, Siren E. A siren is a robust pulsation apparatus that generates powerful noise levels and effective flow pulsations under elevated pressure and temperature conditions [1–3]. By scanning through a certain frequency range during combustion, one is able to detect eigenfrequencies of the flame which increases flame turbulence when excited. The effective flow control of the siren can guarantee a complete burnout of the partially toxic eco-fuels. In addition, gaseous pollutants such as NOx can be reduced to a minimum, since the flame pulsation process provides the opportunity to run reliably a mixture with an otherwise unstable combustion process. The Siren E with its new features is introduced in this paper in detail. To verify the method for eigenfrequency detection, initial combustion tests are first carried out with propane on the so-called MethaNull test rig. There, the main aspect is to meet the same eigenfrequencies as in a previous work. Then, initial combustion tests with premixed hydrogen are performed up to a thermal power of 10 kW. First, different methods for the injection of hydrogen are tested resulting in a prioritised premixed variant. Using this premixing method in the test setup the response to thermo-acoustic excitation via loudspeaker and siren is investigated. Prior to the experiments, a numerical study was performed on a model representing a simplified pilot stage. All numerical and experimental results are presented in detail in this paper.
AB - The problem of climate change, triggered by a high concentration of pollutants in the atmosphere, and the scarcity of fossil resources, increases the need of low emission thermal utilisation of novel, non-carbon eco-fuels such as hydrogen, ammonia (both for energy and propulsion) or hydrogen sulphide (sulphuric acid production). While all of these listed eco-fuels have the potential to decarbonise industry and the energy sector, they also pose demanding challenges regarding combustion. To address these challenges the idea is to combine the advantages of current low-NOx technologies in terms of ultra-lean combustion with a precisely controlled, forced flame turbulence generated by a pulsation actuator. The aim is to develop a safe and highly digitalised combustion technology, including a two-staged burner design for application in the megawatt range with multi eco-fuel capacities and a fully automated control loop for the combustion process.To achieve effective thermo-acoustic modulation an actuator type siren is used. Further improvements towards the demanding application in industry were done leading to the latest siren model, Siren E. A siren is a robust pulsation apparatus that generates powerful noise levels and effective flow pulsations under elevated pressure and temperature conditions [1–3]. By scanning through a certain frequency range during combustion, one is able to detect eigenfrequencies of the flame which increases flame turbulence when excited. The effective flow control of the siren can guarantee a complete burnout of the partially toxic eco-fuels. In addition, gaseous pollutants such as NOx can be reduced to a minimum, since the flame pulsation process provides the opportunity to run reliably a mixture with an otherwise unstable combustion process. The Siren E with its new features is introduced in this paper in detail. To verify the method for eigenfrequency detection, initial combustion tests are first carried out with propane on the so-called MethaNull test rig. There, the main aspect is to meet the same eigenfrequencies as in a previous work. Then, initial combustion tests with premixed hydrogen are performed up to a thermal power of 10 kW. First, different methods for the injection of hydrogen are tested resulting in a prioritised premixed variant. Using this premixing method in the test setup the response to thermo-acoustic excitation via loudspeaker and siren is investigated. Prior to the experiments, a numerical study was performed on a model representing a simplified pilot stage. All numerical and experimental results are presented in detail in this paper.
U2 - 10.1115/GT2022-80886
DO - 10.1115/GT2022-80886
T3 - Proceedings of the ASME Turbo Expo
BT - Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine
PB - American Society of Mechanical Engineers (ASME)