Although POME biogas could be an acceptable source of energy, LCV of biogas is the most important barrier of this renewable and sustainable fuel development. Since POME biogas upgrading is not economic, new methods should betakenintoconsiderationtoimprovethecombustionof biogas. Since the percentage of hydrogen in the POME biogas components could be controlled by some chemical strategies,
4
,andO
2
2
Axial distance (m)
(c)
Axial distance (m)
(b)
mass fraction in hydrogen-enriched biogas combustion.
the effects of hydrogen enrichment on biogas conventional coflow flame were investigated. Combustion characteristics and flame stability of pure biogas (H0: 40% CO
and 60% CH
4
) and hydrogen-enriched biogas (H5: 40% CO
,55% CH
4
,5%H
2
and H10: 40% CO
2
,50%CH
4
2
,10%H
)were studied. It was found that adding hydrogen to the biogas content could improve LCV of biogas and consequently the stability of biogas flame increases. Also, the distribution of temperature becomes uniform when hydrogen is added to the biogas. Indeed, the length of the biogas flame is stretched when hydrogen is introduced to the fuel mixture. Thesimulated results showthat the mixing process of fuel and air improves rapidly in the presence of hydrogen. When the
Although POME biogas could be an acceptable source of energy, LCV of biogas is the most important barrier of this renewable and sustainable fuel development. Since POME biogas upgrading is not economic, new methods should betakenintoconsiderationtoimprovethecombustionof biogas. Since the percentage of hydrogen in the POME biogas components could be controlled by some chemical strategies,4,andO22Axial distance (m)(c)Axial distance (m)(b)mass fraction in hydrogen-enriched biogas combustion.the effects of hydrogen enrichment on biogas conventional coflow flame were investigated. Combustion characteristics and flame stability of pure biogas (H0: 40% COand 60% CH4) and hydrogen-enriched biogas (H5: 40% CO,55% CH4,5%H2and H10: 40% CO2,50%CH42,10%H)were studied. It was found that adding hydrogen to the biogas content could improve LCV of biogas and consequently the stability of biogas flame increases. Also, the distribution of temperature becomes uniform when hydrogen is added to the biogas. Indeed, the length of the biogas flame is stretched when hydrogen is introduced to the fuel mixture. Thesimulated results showthat the mixing process of fuel and air improves rapidly in the presence of hydrogen. When the
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