The Impact of Hydrogen Admixture into Natural Gas on Residential and Commercial Gas Appliances

Jörg Leicher, Johannes Schaffert, Hristina Cigarida, Eren Tali, Frank Burmeister, Anne Giese, Rolf Albus, Klaus Görner, Stéphane Carpentier, Patrick Milin and Jean Schweitzer
Additional contact information
Jörg Leicher: Gas- und Wärme-Institut Essen e.V. (GWI), Hafenstrasse 101, 45356 Essen, Germany
Johannes Schaffert: Gas- und Wärme-Institut Essen e.V. (GWI), Hafenstrasse 101, 45356 Essen, Germany
Hristina Cigarida: Gas- und Wärme-Institut Essen e.V. (GWI), Hafenstrasse 101, 45356 Essen, Germany
Eren Tali: Gas- und Wärme-Institut Essen e.V. (GWI), Hafenstrasse 101, 45356 Essen, Germany
Frank Burmeister: Gas- und Wärme-Institut Essen e.V. (GWI), Hafenstrasse 101, 45356 Essen, Germany
Anne Giese: Gas- und Wärme-Institut Essen e.V. (GWI), Hafenstrasse 101, 45356 Essen, Germany
Rolf Albus: Gas- und Wärme-Institut Essen e.V. (GWI), Hafenstrasse 101, 45356 Essen, Germany
Klaus Görner: Gas- und Wärme-Institut Essen e.V. (GWI), Hafenstrasse 101, 45356 Essen, Germany
Stéphane Carpentier: ENGIE Lab CRIGEN, 93240 Stains, France
Patrick Milin: ENGIE Lab CRIGEN, 93240 Stains, France
Jean Schweitzer: Danish Gas Technology Center (DGC), 2950 Hørsholm, Denmark

Energies, 2022, vol. 15, issue 3, 1-13

Abstract: Hydrogen as a carbon-free fuel is commonly expected to play a major role in future energy supply, e.g., as an admixture gas in natural gas grids. Which impacts on residential and commercial gas appliances can be expected due to the significantly different physical and chemical properties of hydrogen-enriched natural gas? This paper analyses and discusses blends of hydrogen and natural gas from the perspective of combustion science. The admixture of hydrogen into natural gas changes the properties of the fuel gas. Depending on the combustion system, burner design and other boundary conditions, these changes may cause higher combustion temperatures and laminar combustion velocities, while changing flame positions and shapes are also to be expected. For appliances that are designed for natural gas, these effects may cause risk of flashback, reduced operational safety, material deterioration, higher nitrogen oxides emissions (NOx), and efficiency losses. Theoretical considerations and first measurements indicate that the effects of hydrogen admixture on combustion temperatures and the laminar combustion velocities are often largely mitigated by a shift towards higher air excess ratios in the absence of combustion control systems, but also that common combustion control technologies may be unable to react properly to the presence of hydrogen in the fuel.

Keywords: hydrogen; combustion; admixture; blend; H2NG; power-to-gas; emissions; decarbonisation; pollutants; appliance technology (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (12)

Downloads: (external link)
https://www.mdpi.com/1996-1073/15/3/777/pdf (application/pdf)
https://www.mdpi.com/1996-1073/15/3/777/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:15:y:2022:i:3:p:777-:d:730419

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().