Characteristics of NH3/H2 blend as carbon-free fuels: A review

Awad，Omar I.1; Zhou，Bo1; Harrath，Karim2; Kadirgama，K.3

2022

10.1016/j.ijhydene.2022.09.096

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY   Impact Factor & Quartile

0360-3199

In the pursue of a carbon-free economy, the utilization of fuels with low or zero carbon footprint account for only 1% of global final energy demand, a share that is predicted to follow a dramatic growth to 20% by 2050. Ammonia (NH) has become dominant in the international transportation and storage of low-carbon alternative fuels. NH is regarded as an alternative fuel, as a carbon-free fuel, and renewable hydrogen (H) carrier with high energy density, and its production and distribution infrastructure are well established. However, a current challenge is that NH has a lower burning velocity and a narrow flammability limit. Thus, the use of NH has numerous limitations in practical combustion applications. Blending NH with H is considered a solution that has been proposed to enhance NH combustion by improving ignition, flammability, and H safety issue. Using NH blended with H as a fuel in combustion systems is a practical approach to decarbonizing the energy sector. Thus, this review highlights the existing influential studies and ongoing research on NH/H blended fuels. The review covers NH assists the safety behaviour of H use, in-situ NH dissociation, NH and H properties, NH/H combustion characterization, techniques for low NO NH/H combustion, and challenges for NH/H combustion. Finally, recommendations for future studies are provided for further developing the utilization of NH/H as blended fuel.

Hydrogen fuel Laminar flame speed Low NOx NH3/H2 combustion NH3 fuel NH3/H2 blend fuel

English

First ; Corresponding

National Natural Science Foundation of China[52150410405];

ENGINEERING

2-s2.0-85139707670

Scopus

1.Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Department of Chemistry,Southern University of Science and Technology,Shenzhen,518055,China
3.Faculty of Mechanical and Automotive Engineering Technology,Universiti Malaysia Pahang,Malaysia

Awad，Omar I.,Zhou，Bo,Harrath，Karim,et al. Characteristics of NH3/H2 blend as carbon-free fuels: A review[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2022.

Awad，Omar I.,Zhou，Bo,Harrath，Karim,&Kadirgama，K..(2022).Characteristics of NH3/H2 blend as carbon-free fuels: A review.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY.

Awad，Omar I.,et al."Characteristics of NH3/H2 blend as carbon-free fuels: A review".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2022).