Evaporation and Combustion of a Drop of Liquid Fuel—A Review

Téré, Dabilgou; Christian, Tubreoumya Guy; Kayaba, Haro; Bagré, Boubou; Sayouba, Sandwidi; Daho, Tizane; Koulidiati, Jean; Sanogo, Oumar; Zeghmati, Belkacem; Béré, Antoine

doi:10.4236/sgre.2022.132003

Cited by 7 publications

(2 citation statements)

References 51 publications

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“…The importance of the problem of modelling droplet evaporation is well known and has been widely discussed (e.g., Refs. [1][2][3][4] ). A rigorous approach to this problem based on the solution to the heat and mass transfer equations inside and outside droplets, taking into account arbitrary droplet shape and the contributions of other droplets in the system, is out of the question for realistic engineering applications 2,3 .…”

Section: Introductionmentioning

confidence: 99%

A model of droplet evaporation: New mathematical developments

et al. 2022

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A previously developed model for mono-component droplet evaporation is revisited using new mathematical tools for its analysis. The analysis is based on steady-state mass, momentum and energy balance equations for the vapour and air mixture surrounding a droplet. The previously obtained solution to these equations was based on the assumption that the parameter ε (proportional to the squared ratio of the diffusion coefficient and droplet radius) is equal to zero. The analysis presented in the paper is based on the method of integral manifolds and it allowed us to present the droplet evaporation rate as the sum of the evaporation rate predicted by the model based on the assumption that ε = 0 and the correction proportional to ε. The correction is shown to be particularly important in the case of small water andmethanol droplets (diameters less than 5 μm) evaporating in air at low pressure (0.1 atm.). In this case, this correction could reach 35% of the original evaporation rate. In the case of evaporation of relatively large droplets (with radii more than 10 μm) in air at atmospheric and higher pressures these corrections are shown to be small (less than 10−3 of the evaporation rate predicted by the model based on the assumption that ε = 0).

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Section: Introductionmentioning

confidence: 99%

A model of droplet evaporation: New mathematical developments

et al. 2022

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“…Отже, чим вище співвідношення Н:С, тим більш екологічним вважається паливо. Від співвідношення Н:С, залежить і такий досить важливий експлуатаційний показник морського палива як його Q. Від цього показника залежить власне витрата палива [7]. Причому, кисень, азот, сірка, волога і негорючі мінеральні речовини, що входять до складу палива, є енергетичним баластом.…”

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Performance Properties of Marine Fuel Derived From Secondary Polymer Raw Materials

Chernyavsky,

Grigorov

2023

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The article substantiates the need to determine the operational properties of shipping fuel obtained from secondary polyolefin (HDPE and PP) raw materials by catalytic pyrolysis. It is proposed to evaluate the operational properties of fuel for shipping – marine gasoil (MGO) by the value of the cetane index (CI, unit), H:C ratio, working heat of combustion (Q, MJ/kg). In view of the scheme of catalytic pyrolysis of polymeric raw materials proposed by us, which consists of two stages (I stage - the course of reactions on a mixture (1:1) of zeolitecontaining catalysts Zn-H-ZSM-5/Fe-H-ZSM-5; II stage – the course of reactions on the NiH-ZSM-5 catalyst), it is necessary to determine after each stage of the process the quality indicators of the reaction products (fractions with boiling points of -360(380) °С) given above. Also, additionally, we determined the quality indicators for the fractions obtained on the H-ZSM-5 industrial catalyst. The proposed research program, on the one hand, allows to determine the efficiency of the pyrolysis process with the selected catalysts in comparison with industrial technology, on the other hand, it will allow to adjust the process in the direction of obtaining a final product of a quality level that meets the requirements for MGO presented in ISO 8217:2017. The conducted studies showed that by the value of CI (48-50 units) and ν 40 (2,8–3,1 mm²/s) the fractions with boiling points of 180–360(380) °С, which were obtained by pyrolysis of polymer raw materials according to the two-stage technology proposed by us (on Zn-H-ZSM-catalysts 5/Fe-H-ZSM-5, Ni-H-ZSM-5) can be attributed to the brands of distillate marine fuels DMA, DFA, DMZ, DFZ (ISO 8217:2017). These fractions are also characterized by a high Н:C ratio (for HDPE – 1.62; for PP – 1.64) and working heat of combustion (for HDPE – 44.0 MJ/kg; for PP – 44.3 MJ/kg), which makes it possible to use them as fuels for shipping.

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