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Title:Obtaining the synthetic fuels from waste plastic and their effect on cavitation formation in a common-rail diesel injector
Authors:ID Kevorkijan, Luka (Author)
ID Palomar-Torres, Amalia (Author)
ID Torres Jiménez, Eloisa (Author)
ID Mata, Carmen (Author)
ID Biluš, Ignacijo (Author)
ID Lešnik, Luka (Author)
Files:.pdf Kevorkijan-2023-Obtaining_the_Synthetic_Fuels.pdf (4,55 MB)
MD5: A62139D29DFEC02DC72E0FAFFD17F4FF
 
URL https://doi.org/10.3390/su152115380
 
Language:English
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:The presented paper addresses two significant issues of the present time. In general, the studies of the effect of synthetic fuels on cavitation formation and cavitation erosion prediction in the nozzle tip of common-rail diesel injectors were addressed. The first problem is plastic waste, which can have a significant negative environmental impact if not treated properly. Most plastic waste has high energy value, so it represents valuable material that can be used in resource recovery to produce various materials. One possible product is synthetic fuel, which can be produced using thermal and catalytic pyrolysis processes. The first issue addressed in the presented paper is the determination of fuel properties since they highly influence the fuel injection process, spray development, combustion, etc. The second is the prediction of cavitation development and cavitation erosion in a common-rail diesel injector when using pyrolytic oils from waste plastic. At first, pyrolytic oils from waste high- and low-density polyethylene were obtained using thermal and catalytic pyrolysis processes. Then, the obtained oils were further characterised. Finally, the properties of the obtained oils were implemented in the ANSYS FLUENT computational program and used in the study of the cavitation phenomena inside an injection nozzle hole. The cavitating flow in FLUENT was calculated using the Mixture Model and Zwart-Gerber-Belamri cavitation model. For the modelling of turbulence, a realisable k–ε model with Enhanced Wall Treatment was used, and an erosion risk indicator was chosen to compare predicted locations of cavitation erosion. The results indicate that the properties of the obtained pyrolytic oils have slightly lower density, surface tension and kinematic viscosity compared to conventional diesel fuel, but these minor differences influence the cavitation phenomenon inside the injection hole. The occurrence of cavitation is advanced when pyrolytic oils are used, and the length of cavitation structures is greater. This further influences the shift of the area of cavitation erosion prediction closer to the nozzle exit and increases its magnitude up to 26% compared to diesel fuel. All these differences have the potential to further influence the spray break-up process, combustion process and emission formation inside the combustion chamber.
Keywords:plastic waste, synthetic fuels, pyrolytic oils, common-rail, cavitation, erosion, transient simulation
Publication status:Published
Publication version:Version of Record
Submitted for review:14.09.2023
Article acceptance date:25.10.2023
Publication date:27.10.2023
Publisher:MDPI
Year of publishing:2023
Number of pages:Str. 1-22
Numbering:Letn. 15, Št. 21, št. članka 15380
PID:20.500.12556/DKUM-87411 New window
UDC:532.528:665.753
ISSN on article:2071-1050
COBISS.SI-ID:172126467 New window
DOI:10.3390/su152115380 New window
Publication date in DKUM:18.03.2024
Views:299
Downloads:30
Metadata:XML DC-XML DC-RDF
Categories:Misc.
:
KEVORKIJAN, Luka, PALOMAR-TORRES, Amalia, TORRES JIMÉNEZ, Eloisa, MATA, Carmen, BILUŠ, Ignacijo and LEŠNIK, Luka, 2023, Obtaining the synthetic fuels from waste plastic and their effect on cavitation formation in a common-rail diesel injector. Sustainability [online]. 2023. Vol. 15, no. Št. 21,  članka 15380, p. 1–22. [Accessed 20 January 2025]. DOI 10.3390/su152115380. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=87411
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Record is a part of a journal

Title:Sustainability
Shortened title:Sustainability
Publisher:MDPI
ISSN:2071-1050
COBISS.SI-ID:5324897 New window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:27.10.2023

Secondary language

Language:Slovenian
Keywords:plastični odpadki, sintetična goriva, pirolitična olja, skupni vod, kavitacija, erozija, časovno odvisna simulacija


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