Performance of CI engine operating with hydrogen supplement co-combustion with jojoba methyl ester

Hamdan, Mohammad O.; Selim, Mohamed Y. E.

doi:10.1016/j.ijhydene.2016.04.168

Cited by 41 publications

(3 citation statements)

References 26 publications

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“…Furthermore, it releases a negligible amount of SOx and NOx. In recent years, most of the studies on jojoba focused on using jojoba oil as a potential biofuel, either as pure oil or in blends in diesel compression-ignition engines [7][8][9][10][11][12][13]. After oil extraction, the solid jojoba waste can be collected and milled into a fine powder with the potential to be used as a renewable resource.…”

Section: Introductionmentioning

confidence: 99%

Combustion of Date Stone and Jojoba Solid Waste in a Hybrid Rocket-like Combustion Chamber

Alsaidi,

Huh,

Selim

2024

Aerospace

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The performance of two solid biomass wastes, date stone and jojoba solid waste, was experimentally examined for their potential application in combustion and propulsion systems. The fuels were tested in a hybrid rocket-like combustion environment, and the test result was analyzed with combustion and propulsion parameters. The performance of both fuels was comparatively evaluated and compared with a conventional hydrocarbon fuel in a hybrid rocket, with paraffin wax serving as a baseline. A compression device was introduced to compress the solid biomass wastes into a circular-shaped fuel grain compatible with a hybrid rocket combustion chamber with a hot surface ignitor. Thermogravimetric analysis (TGA) and chemical equilibrium analysis (CEA) results revealed that the performance of the biomass fuel can be comparable to conventionally used hydrocarbon paraffin-wax-based propellant within a certain range of oxidizer-to-fuel ratio, in terms of theoretical specific impulse performance. Through experimental performance tests, it was found that the compressed biomass fuel grains were successfully ignited and produced thrust. Both biomass fuels tested in a hybrid rocket combustion chamber are expected to pave the way for further developments in biomass fuels in the waste-to-energy field for their application in combustion and propulsion systems, potentially replacing fossil fuels with renewable resources.

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Section: Introductionmentioning

confidence: 99%

Combustion of Date Stone and Jojoba Solid Waste in a Hybrid Rocket-like Combustion Chamber

Alsaidi,

Huh,

Selim

2024

Aerospace

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“…The obtained oil contains long molecular chains, and the majority of the molecules contain 40-42 carbon atoms [29,30]. Several studies have investigated the combustion of jojoba biofuel on its own, mixed with diesel fuel in diesel engines [21,29,[31][32][33][34] or furnaces [33,35], as the dual-fuel mode [36], or even as solid waste [35]. In addition, the properties of the jojoba oil biofuel have been studied, measured, and modified to suit diesel engines [30,37].…”

Section: Introductionmentioning

confidence: 99%

Rheological Properties of the Jojoba Biofuel

Ghannam

Selim

2021

Sustainability

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Jojoba oil biofuel is a potential alternative to diesel fuel with attractive properties, but its flow behavior under the operating conditions of a diesel engine still needs to be clarified. In this study, the rheological properties of the jojoba biofuel are presented in assessment with diesel fuel to experimentally evaluate both their flow behaviors at different operating temperatures. A Fann-type coaxial cylinder viscometer was employed. The shear stress of the tested biofuel rises considerably with the shear rate in a marginally nonlinear manner on a logarithmic scale. Rheograms indicate that the flow behavior decreases gradually and considerably in the temperature range of 30–90 °C. The viscosity of the jojoba oil biofuel declines considerably with the decreasing applied shear rate and temperature. Based on the experimental results, a suitable model is developed for predicting the viscosity characteristics of the tested biofuel during the heating and cooling cycles of a diesel engine.

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“…For this, alternative fuels, which are being derived from renewable sources, can be explored as fuels for CI engines. 4 Use of hydrogen (H 2 ) in CI engine has been the focus of research for long time 5,6 ; though, the discovery of an eco-accommodating method for producing H 2 at a reasonable cost is still a challenge. H 2 is being produced by different techniques, namely, pyrolysis, gasification, and reforming technologies.…”

Section: Introductionmentioning

confidence: 99%

Effect of hydrogen‐enriched biogas induction on combustion, performance, and emission characteristics of dual‐fuel compression ignition engine

Rosha

Ibrahim

Nanda

et al. 2020

Asia-Pacific J Chem Eng

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Gaseous fuel induction in a compression ignition (CI) engine has picked up much attention over the most recent few years, particularly when it is produced by using renewable sources. In this study, hydrogen-enriched biogas (HEB) was used as a gaseous fuel and co-combusted in dual-fuel CI engine.Experimentation was carried out on a 3.5-kW CI engine test rig in the brake mean effective pressure range between 0 and 3.5 bar, as well as, HEB between 0.1 and 0.5 kg/hr. HEB induction effects on various engine characteristics (combustion, performance, and emission) were studied at rated engine speed (1,500 rpm). Results revealed that the peak cylinder pressure and ignition delay period increased with increasing HEB proportion (0.1 to 0.5 kg/hr) as compared with diesel mode. The calorific value of HEB (57.0 MJ/kg) is higher than diesel (42.0 MJ/kg), which led to improved BTE in dual-fuel mode. The emission results showed that with an increase of HEB rates, the NOx emission mildly decreases, but smoke opacity and hydrocarbon emissions majorly reduce. Thus, the HEB induction has great potential to be a feasible technological solution to overcome low BTE and high hydrocarbon emissions in biogas operated CI engines.

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Performance of CI engine operating with hydrogen supplement co-combustion with jojoba methyl ester

Cited by 41 publications

References 26 publications

Combustion of Date Stone and Jojoba Solid Waste in a Hybrid Rocket-like Combustion Chamber

Combustion of Date Stone and Jojoba Solid Waste in a Hybrid Rocket-like Combustion Chamber

Rheological Properties of the Jojoba Biofuel

Effect of hydrogen‐enriched biogas induction on combustion, performance, and emission characteristics of dual‐fuel compression ignition engine

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