Spraying of Composite Liquid Fuels Based on Types of Coal Preparation Waste: Current Problems and Achievements: Review

Roman Volkov, Timur Valiullin and Olga Vysokomornaya
Additional contact information
Roman Volkov: Research School of High-Energy Physics, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
Timur Valiullin: Research School of High-Energy Physics, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
Olga Vysokomornaya: Research School of High-Energy Physics, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia

Energies, 2021, vol. 14, issue 21, 1-17

Abstract: This article discusses the atomization of composite liquid fuels. A large group of injectors is considered. A comparative analysis of the atomization characteristics (droplet sizes and velocities, jet opening angles) and the influence of the fuel characteristics (density, viscosity, component composition) and the process parameters (the ratio of the fuel–air mass flow rates, the features of the jet formation) has been carried out. Finally, the most effective types of injectors, which provide for the necessary characteristics of fuel atomization for its combustion, have been determined. The most favorable conditions for the applicability of each type of atomization have been formulated. Possible mechanisms of secondary fragmentation of droplets of composite fuels have been analyzed: those resulting from mutual collisions of droplets in the flux and from the interaction with a solid surface as well as those resulting from thermal overheating in the presence of a phase boundary or a large gradient of component volatility. A conclusion is made about the need of using a synergistic effect of primary and secondary atomization of fuel suspension droplets.

Keywords: composite liquid fuels; spaying; atomization; nozzle devices; injectors; primary and secondary atomization; collision modes; micro-explosion (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/21/7282/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/21/7282/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:21:p:7282-:d:671515

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().