Hydrogen and ethanol: Production, storage, and transportation

Comparative study on combustion and emission characteristics of methanol/hydrogen, ethanol/hydrogen and methane/hydrogen blends in high compression ratio SI engine

Effects of hydrogen direct injection on combustion and emission characteristics of a hydrogen/Acetone-Butanol-Ethanol dual-fuel spark ignition engine under lean-burn conditions

Multi-objective optimization of the engine performance and emissions for a hydrogen/gasoline dual-fuel engine equipped with the port water injection system

Nowadays, the combustion of fossil fuels for transportation has a major negative impact on the environment. All nations are concerned with environmental safety and the regulation of pollution, motivating researchers across the world to find an alternate transportation fuel. The transition of the transportation sector towards sustainability for environmental safety can be achieved by the manifestation and commercialization of clean hydrogen fuel. Hydrogen fuel for sustainable mobility has its own effectiveness in terms of its generation and refueling processes. As the fuel requirement of vehicles cannot be anticipated because it depends on its utilization, choosing hydrogen refueling and onboard generation can be a point of major concern. This review article describes the present status of hydrogen fuel utilization with a particular focus on the transportation industry. The advantages of onboard hydrogen generation and refueling hydrogen for internal combustion are discussed. In terms of performance, affordability, and lifetime, onboard hydrogen-generating subsystems must compete with what automobile manufacturers and consumers have seen in modern vehicles to date. In internal combustion engines, hydrogen has various benefits in terms of combustive properties, but it needs a careful engine design to avoid anomalous combustion, which is a major difficulty with hydrogen engines. Automobile makers and buyers will not invest in fuel cell technology until the technologies that make up the various components of a fuel cell automobile have advanced to acceptable levels of cost, performance, reliability, durability, and safety. Above all, a substantial advancement in the fuel cell stack is required.

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Hydrogen Fuel for Future Mobility: Challenges and Future Aspects

Analysis of performance parameters of an ethanol fueled spark ignition engine operating with hydrogen enrichment

High pressure speed of sound and density of (decalin + n-decane), (decalin + n-hexadecane) and (n-decane + n-hexadecane) systems and thermodynamic modeling with PHCT equation of state

RESUMO – Misturas de decalina (molecula naftenica) e n-hexadecano (alcano linear), apresentam diferencas em forma, natureza quimica e comprimento de cadeia, podendo ser encontrados em fracoes de querosene e diesel. Com o objetivo de se avaliar a influencia destas diferencas nas propriedades fisicas da mistura destes hidrocarbonetos, no presente estudo foram determinadas experimentalmente as massas especificas desses hidrocarbonetos puros e suas misturas binarias, em diferentes composicoes, nas temperaturas de (313,2, 323,2 e 333,2) K e pressao atmosferica e as velocidades do som nestes mesmos sistemas nas temperaturas de (313,2, 323,2 e 333,2) K e pressoes de (0,1, 5, 10, 15, 20 e 25) MPa. A partir destes dados e de definicoes termodinâmicas foi possivel calcular: massa especifica em altas pressoes, volume em excesso, compressibilidade isentropica e compressibilidade isentropica em excesso. Os dados experimentais foram correlacionados com a equacao de estado de Prigogine-Flory-Patterson.

Renan S. Lucena

Papers

Analysis of performance parameters of an ethanol fueled spark ignition engine operating with hydrogen enrichment

High pressure speed of sound and density of (decalin + n-decane), (decalin + n-hexadecane) and (n-decane + n-hexadecane) systems and thermodynamic modeling with PHCT equation of state

Medida experimental e modelagem termodinâmica da massa específica e da velocidade do som em altas pressões para o sistema decalina+n-hexadecano