Numerical simulation of a hydrogen fuelled gas turbine combustor

Gobbato, Paolo; Masi, Massimo; Toffolo, Andrea; Lazzaretto, Andrea

doi:10.1016/j.ijhydene.2011.01.045

Cited by 57 publications

(16 citation statements)

References 39 publications

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“…Lower CO emissions and wider flammability limits are positive effects, but lower volumetric energy density requires adapted fuel supply controls and storage solutions [27]. Combustion of 100% hydrogen without diluent requires 'intensive R&D activity to pave the way for such a technology' [28], since 'safe and reliable operation [for pure hydrogen combustion] is obtained in diffusion combustors only' [29].…”

Section: Stationary Gas Turbine Combustionmentioning

confidence: 99%

Scaling of an Aviation Hydrogen Micromix Injector Design for Industrial GT Combustion Applications

Berger

2021

Aerotec. Missili Spaz.

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Decarbonising the energy grid through renewable energy requires a grid firming technology to harmonize supply and demand. Hydrogen-fired gas turbine power plants offer a closed loop by burning green hydrogen produced with excess power from renewable energy. Conventional dry low NOx (DLN) combustors have been optimized for strict emission limits. A higher flame temperature of hydrogen drives higher NOx emissions and faster flame speed alters the combustion behavior significantly. Micromix combustion offers potential for low NOx emissions and optimized conditions for hydrogen combustion. Many small channels, so-called airgates, accelerate the airflow followed by a jet-in-crossflow injection of hydrogen. This leads to short-diffusion flames following the principle of maximized mixing intensity and minimized mixing scales. This paper shows the challenges and the potential of an economical micromix application for an aero-derivative industrial gas turbine with a high-pressure ratio. A technology transfer based on the micromix combustion research in the ENABLEH2 project is carried out. The driving parameter for ground use adaption is an increased fuel orifice diameter from 0.3 mm to 1.0 mm to reduce cost and complexity. Increasing the fuel supply mass flow leads to larger flames and higher emissions. The impact was studied through RANS simulation and trends for key design parameters were shown. Increased velocity in the airgates leads to a higher pressure drop and reduced emissions through faster mixing. Altering the penetration depth shows potential for emission reduction without compromising on pressure loss. Two improved designs are found, and their performance is discussed.

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Section: Stationary Gas Turbine Combustionmentioning

confidence: 99%

Scaling of an Aviation Hydrogen Micromix Injector Design for Industrial GT Combustion Applications

Berger

2021

Aerotec. Missili Spaz.

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“…To simplify, when the EH works in the G2P mode, the G2P facility [35] is assumed to have the same cost characteristics as those of a traditional gas turbine, following the quadratic model of (2), with a selfproduced hydrogen fuel; when it works in the P2H mode, its cost is defined as in (8) [36]:…”

Section: Constraints For P2h and G2p In An Ehmentioning

confidence: 99%

Integration of power-to-hydrogen in day-ahead security-constrained unit commitment with high wind penetration

Ban

Shahidehpour

et al. 2017

J. Mod. Power Syst. Clean Energy

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The increasing integration of variable wind generation has aggravated the imbalance between electricity supply and demand. Power-to-hydrogen (P2H) is a promising solution to balance supply and demand in a variable power grid, in which excess wind power is converted into hydrogen via electrolysis and stored for later use. In this study, an energy hub (EH) with both a P2H facility (electrolyzer) and a gas-to-power (G2P) facility (hydrogen gas turbine) is proposed to accommodate a high penetration of wind power. The EH is modeled and integrated into a security-constrained unit commitment (SCUC) problem, and this optimization problem is solved by a mixed-integer linear programming (MILP) method with the Benders decomposition technique. Case studies are presented to validate the proposed model and elaborate on the technological potential of integrating P2H into a power system with a high level of wind penetration (HWP).

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“…Gas turbine combustion simulation requires taking into account the interaction between chemistry and turbulence. Gobbato et al [39] show a low computational cost numerical approach, but it could be used only for a diffusion flame. Looking at the test case under investigation, the air/fuel mixture produced by the interaction between the air and the fuel is not homogeneous at the combustion chamber inlet.…”

Section: Ivnumerical Approachmentioning

confidence: 99%

“…The code uses directly fitted curves of the laminar flame speed obtained from numerical simulations proposed by Gottgens et al [44]. A RANS approach was used for turbulence modeling, and the k-ω SST model was selected as suggested in some work on gas turbine combustion chamber [45][46][47]. The laminar flamelet tables were generated by using the kinetic mechanism proposed by Li et al [48,49], this mechanism is suggested by Ströhle et al [50] because it is optimized for the hydrogen combustion in atmospheric condition.…”

Section: Ivnumerical Approachmentioning

confidence: 99%