Evaporating spray characteristics of methanol-in-diesel emulsions

Ghosh, Anupam; Ravikrishna, RV

doi:10.1016/j.fuel.2020.119730

Cited by 15 publications

(5 citation statements)

References 34 publications

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“…Despite direct application benefits, challenges persist due to methanol and diesel immiscibility, requiring costly co-solvents. Blending ratios are limited due to cold start issues and oil separation, restricting the full potential of methanol fuel in direct mixing methods [63,[97][98][99][100].…”

Section: Blending Diesel and Methanol Directlymentioning

confidence: 99%

Methanol, a Plugin Marine Fuel for Green House Gas Reduction—A Review

Parris,

Spinthiropoulos,

Ragazou

et al. 2024

Energies

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The escalating global demand for goods transport via shipping has heightened energy consumption, impacting worldwide health and the environment. To mitigate this, international organizations aim to achieve complete fuel desulphurization and decarbonization by 50% by 2050. Investigating eco-friendly fuels is crucial, particularly those with a reduced carbon and zero sulfur content. Methanol derived mainly from renewable sources and produced by carbon dioxide’s hydrogenation method, stands out as an effective solution for GHG reduction. Leveraging its favorable properties, global scalability, and compatibility with the existing infrastructure, especially LNGs, methanol proves to be a cost-efficient and minimally disruptive alternative. This review explores methanol’s role as a hybrid maritime fuel, emphasizing its ecological production methods, advantages, and challenges in the shipping industry’s green transition. It discusses the environmental impacts of methanol use and analyzes economic factors, positioning methanol not only as an eco-friendly option, but also as a financially prudent choice for global shipping. Methanol is efficient and cost-effective and excels over MGO, especially in new ships. It is economically advantageous, with decreasing investment costs compared to LNG, while providing flexibility without specialized pressure tanks. Global marine fuel trends prioritize fuel traits, accessibility, and environmental considerations, incorporating factors like policies, emissions, bunkering, and engine adaptability during transitions.

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Section: Blending Diesel and Methanol Directlymentioning

confidence: 99%

Methanol, a Plugin Marine Fuel for Green House Gas Reduction—A Review

Parris,

Spinthiropoulos,

Ragazou

et al. 2024

Energies

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“…Spray characteristics of methanol-in-diesel emulsions under evaporating conditions are studied using Mie-scattering and shadowgraphy techniques. [82] The spray cooling performance can be enhanced by additives that alter the coolant contact angle, surface tension, and thermal conductivity. Qiao et al [83] studied the effect of surfactant addition to coolant on nucleate boiling.…”

Section: Coolant Modificationmentioning

confidence: 99%

A Review of Parameters and Mechanisms in Spray Cooling

Thakur,

Kadapure,

Hegde

et al. 2023

Metall Mater Eng

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Miniaturisation in avionics, electronics, and medical appliances has led to demands for rapid heat dissipation techniques. The spray cooling technique has gained importance recently due to its advantage over other cooling methods. Parameters affecting heat transfer mechanisms during spray cooling are contemplated. This review presents different heat transfer parameters and their effect on spray cooling by analysis from past studies. Heat transfer surface modifications and different coolant variations to enhance heat transfer effectiveness are also reviewed. Apart from high heat flux having more applications, low heat flux studies have also grabbed the researchers to find solutions with a temperature range lower than 250˚C. Therefore, the upcoming spray cooling technology will have broad applications that will contribute to the maximum efficiency of the heat removal rate.

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“…Compared with the liquid phase penetration, the vapor phase penetration was more sensitive to the injection pressure variation. Based on the evaporative spray research of methanol-diesel emulsion, Anupam et al [30] conducted high-pressure injection research on emulsions with different emulsifiers and different contents of methanol, and the maximum injection pressure was as large as 150 MPa. The results showed that the surfactant boiling point had a great influence on the liquid length of the methanol-in-diesel emulsion sprays.…”

Section: Property Diesel Methanolmentioning

confidence: 99%

Characteristics of Evaporating Spray for Direct Injection Methanol Engine: Comparison between Methanol and Diesel Spray

et al. 2022

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In the context of global efforts to pursue carbon neutrality, the research on the application technology of methanol fuel in internal combustion engines has ushered in a new peak. In order to provide a theoretical basis for the development of direct injection methanol engines, the spray characteristics of methanol with high-pressure direct injection were studied. Based on the visualization experimental device of constant volume vessels, the diffused background-illumination extinction imaging (DBI) and schlieren methods were applied to examine the distinctions in the evaporating spray properties between methanol and diesel under different injection pressures and ambient temperature conditions. Furthermore, aiming to maximize the potential of methanol fuel in compression ignition engines, under the premise that the alternative fuel can obtain the same total fuel energy as diesel, two different injection strategies of methanol were proposed and evaluated through the coordination of the nozzle hole diameter, injection pressure and injection duration. It reveals that it is easier for methanol spray to evaporate because of the lower boiling point, which results in a shorter spray tip penetration and wider spray angle compared with those of diesel, especially under the middle-level ambient temperature (600 K) condition. These deviations are also observed under different injection pressure conditions. However, affected by the lower energy density, the strategies of injecting the same fuel energy of methanol with that of diesel prolong the methanol spray tip penetration, enlarge its spray area and sacrifice the methanol evaporation performance. It is necessary for the geometrical design of the combustion chamber to coordinate with the hole diameter and injection pressure selection to deal with the huge distinctions in the spray characteristics between methanol and diesel fuel.

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Evaporating spray characteristics of methanol-in-diesel emulsions

Cited by 15 publications

References 34 publications

Methanol, a Plugin Marine Fuel for Green House Gas Reduction—A Review

Methanol, a Plugin Marine Fuel for Green House Gas Reduction—A Review

A Review of Parameters and Mechanisms in Spray Cooling

Characteristics of Evaporating Spray for Direct Injection Methanol Engine: Comparison between Methanol and Diesel Spray

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