Oxy-hydrogen gas as an alternative fuel for heat and power generation applications - A review

Paparao, Jami; Murugan, S.

doi:10.1016/j.ijhydene.2021.09.069

Cited by 49 publications

(16 citation statements)

References 96 publications

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“…The terms α c and α k can be evaluated using Equations (20) and (21), where ω c , Sc t , and σ t represent progress term, turbulent Schmidt number (0.70), and turbulent Prandtl number (0.85), respectively. 49 The mean reaction rate can be determined using the Zimont Turbulent Flame Speed Closure (ZTFSC) method, 50 as expressed in Equation (22). Where ρ u U t , and C are unburnt mixture density turbulent flame speed, and PV, respectively.…”

Section: Reaction Modelmentioning

confidence: 99%

“…15 Even though, around 90% of the GTs worldwide operate on gaseous (natural gas) or liquid (liquefied natural gas-LNG) fuels, fuel flexibility can assert great advantage in areas with limited natural gas resources. Alternative fuels like propane, 16,17 syngas, [18][19][20] hydrogen, [21][22][23] and ammonia 24,25 are gaining much traction nowadays to overcome the dependence on natural gas for power generation. Fuel-flexible capability can also be useful during the power plant erection-installation as well as plant expansion.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of methane, propane, and syngas oxy‐flames in a fuel‐flex gas turbine combustor for carbon capture

Haque

Nemitallah

Abdelhafez

et al. 2022

Intl J of Energy Research

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Premixed oxy-combustion flames of methane, syngas (CH 4 :CO:H 2 with the molar ratio of 2:1:1), and propane in CO 2 -diluted environment (for carbon capture) are examined in a swirl-stabilized combustor using large eddy simulations (LES) in three-dimensional (3-D) domain. The flame and emission characteristics are examined for the different fuels over a range of equivalence ratios (Φ: 0.34, 0.39, and 0.42), at 60% oxygen fraction (OF), and 2.5 m/s bulk inlet velocity under atmospheric conditions. The results indicate increments in several characteristic parameters that are of special importance for gas turbine combustion applications, including adiabatic flame temperature (T ad ), laminar flame speed (LFS), power density (PD), product formation rate (PFR), Damköhler number (Da), and CO emission, with the increase of Φ whatever the type of fuel. Alternatively, flame thickness (δ) decreases with the increase in Φ for the three fuels. Characteristic "V" shape with almost identical outer recirculation zone (ORZ) is also observed for the three fuels. Among the studied fuels, oxy-methane flames demonstrate highest flame thicknesses, least uniform temperature distribution (highest pattern factor) at combustor outlet, and lowest CO emission level. Oxy-syngas flames show more uniform temperature distribution (lowest pattern factor) at combustor outlet and highest CO emission as compared with the oxy-methane and oxy-propane flames. The oxy-propane flames have higher values of T ad , LFS, PD, PFR, Da, and thermal power (TP) along with lowest flame thickness compared with methane and syngas counterparts. Highlights• Increasing equivalence ratio improves the flame characteristics but increases CO emission.• Fuel type has insignificant effects on shape/size of the outer recirculation zone (ORZ).• Oxy-methane flames showed highest flame thicknesses and pattern factor and lowest CO.

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Section: Reaction Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of methane, propane, and syngas oxy‐flames in a fuel‐flex gas turbine combustor for carbon capture

Haque

Nemitallah

Abdelhafez

et al. 2022

Intl J of Energy Research

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“…Numerical studies on the manufacturing of oxyhydrogen gas are also studied. The usage of oxyhydrogen gas in IC engines was discussed [ 21 ]. The addition of oxyhydrogen to gasoline and diesel engines increases the cleanliness of exhaust gases at idle.…”

Section: Introductionmentioning

confidence: 99%

Sustainability and Environmental Impact of Ethanol and Oxyhydrogen Addition on Nanocoated Gasoline Engine

Padmanabhan

Giridharan²,

Stalin³

et al. 2022

Bioinorganic Chemistry and Applications

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Climate change, clean air, renewable energy, nontoxic surroundings, and the opportunity to live in a healthy community are just few of the issues that environmental sustainability addresses. To improve environmental health and quality of life, several researchers have turned their attention to alternative energy sources like ethanol and oxyhydrogen. In latest years, significant progress has been made in the development of ethanol and hydrogen as clean energy sources. A higher octane rating is achieved by mixing ethanol with gasoline rather than using regular gasoline. A novel mix of oxyhydrogen, ethanol, and gasoline is ecologically friendly while simultaneously increasing the performance of gasoline engines. In this study, a nanoparticle-coated piston on a low heat rejection gasoline engine fuelled by an ethanol-gasoline mix with oxyhydrogen addition was investigated. It has been evaluated that thermal efficiency improved by up to 25% while fuel consumption can be reduced by up to 28% on a volume basis compared to the baseline engine. Furthermore, the decrease in harmful carbon monoxide reached around 10%, and the reduction in unburned hydrocarbon emissions reached 18%.

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“…Hydrogen, endowed with high mass-energy density and strong reductivity, is widely used in energy [1], industry [2,3], and medical treatment [4,5]. It commonly served as a carrier gas in the photovoltaics and semiconductor industry [6].…”

Section: Introductionmentioning

confidence: 99%

Electrolytic water technology based on transformable and amorphous liquid metal electrodes

Xing

Liu

2022

Applied Research

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Hydrogen has important values in industrial manufacture, medical health care, and diverse energy application areas. Among the many possible approaches, convenient and safe hydrogen production from water electrolysis has always been a preferred in situ hydrogen supply technology. So far, many of the electrodes thus involved are based on rigid metals or conductive items which may encounter inconvenience or insufficiency sometimes. To achieve targeted release of hydrogen, appropriate administration of suitable flexible hydrogen evolution electrodes is the key. In recent years, gallium-based liquid metals have emerged in the field of flexible and biological electrodes. Starting from this point, liquid metal is proposed here as a transformable amorphous electrode for hydrogen evolution in electrolytic water which may help mold new conceptual electrolysis and energy utilization ways. The electrochemical Applied Research.

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Oxy-hydrogen gas as an alternative fuel for heat and power generation applications - A review

Cited by 49 publications

References 96 publications

Analysis of methane, propane, and syngas oxy‐flames in a fuel‐flex gas turbine combustor for carbon capture

Analysis of methane, propane, and syngas oxy‐flames in a fuel‐flex gas turbine combustor for carbon capture

Sustainability and Environmental Impact of Ethanol and Oxyhydrogen Addition on Nanocoated Gasoline Engine

Electrolytic water technology based on transformable and amorphous liquid metal electrodes

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