Carbon-negative “emerald hydrogen” from electrified steam methane reforming of biogas: System integration and optimization

Nava, Andrea; Remondini, Davide; Campanari, Stefano; Romano, Matteo C.

doi:10.1016/j.ijhydene.2024.09.171

International Journal of Hydrogen Energy

2024

DOI: 10.1016/j.ijhydene.2024.09.171

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Carbon-negative “emerald hydrogen” from electrified steam methane reforming of biogas: System integration and optimization

Andrea Nava,

Davide Remondini,

Stefano Campanari

et al.

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Cited by 2 publications

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Process design and integration for the electrification of a SMR-based hydrogen plant with absorption-based CO2 capture

Lee,

Park,

Lee

et al. 2025

Applied Thermal Engineering

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Process design and integration for the electrification of a SMR-based hydrogen plant with absorption-based CO2 capture

Lee,

Park,

Lee

et al. 2025

Applied Thermal Engineering

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Numerical Assessment of a Heavy-Duty (HD) Spark Ignition (SI) Biogas Engine

Ballerini,

Lucchini,

Onorati

2024

Energies

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This paper examines the feasibility of converting a Heavy-Duty (HD) Spark Ignition (SI) Compressed Natural Gas (CNG) engine to biogas fuel. A One-Dimensional (1D) simulation tool was used to model a commercially available HD SI CNG engine. The model was validated by comparing experimental and computed in-cylinder pressure, brake power, fuel, and air mass flow rates. The engine was then modified to use biogas with an injection system based on existing designs from the literature. A Spark Advance (SA) sweep was performed to assess the engine’s performance at full load. The chosen equivalence ratio was 0.85, and the engine speed was 1500 rpm. The Maximum Brake Power (MBP) and Maximum Brake Efficiency (MBE) operating points were identified. Partial load analysis was conducted starting from the MBP conditions. Results in terms of brake power, brake efficiency, and NOx emissions are presented. Conversion to biofuel results in a reduction in power and efficiency of 33% and 4%, respectively, at 1500 rpm and full load conditions. Brake Specific NOx emissions remained comparable. This numerical study demonstrates the feasibility of biogas conversion for HD SI engines, offering a renewable fuel alternative to reduce greenhouse gas emissions, though with trade-offs in power and efficiency.

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Carbon-negative “emerald hydrogen” from electrified steam methane reforming of biogas: System integration and optimization

Cited by 2 publications

References 24 publications

Process design and integration for the electrification of a SMR-based hydrogen plant with absorption-based CO2 capture

Process design and integration for the electrification of a SMR-based hydrogen plant with absorption-based CO2 capture

Numerical Assessment of a Heavy-Duty (HD) Spark Ignition (SI) Biogas Engine

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