Submission

Efficiency of a Vacuum Cooling System with Liquid-Vapor Ejector for Biodiesel Production

DOI: 10.18462/iir.compr.2021.0365

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Session: Ejectors and centrifugal compressors 1

Accept state: Submission accepted

Authors
Name Organization  
Serhii Sharapov, PhD Sumy State University
Maxim Prokopov, PhD Sumy State University
Dariusz Butrymowicz, Dr hab. Bialystok University of Technology
Viktor Kozin, PhD Sumy State University

Abstract

This article deals with the issue of increasing an efficiency of the vacuum cooling systems during biodiesel production by using a new type of vacuum units, such as liquid-vapor ejector, which working process is based on the principle of jet thermal compression. The geometry of the flowing part has a significant impact on the efficiency of the mixing process in primary and secondary flows and the unit as a whole. The authors consider structural variations of liquid-vapor ejectors – with cylindrical and conical mixing chambers, followed by a cylindrical section, with a diffuser and without it. Numerical and experimental studies of liquid-vapor ejector with a various geometry of the flow part were put into practice and made it possible to obtain the dependence of the performance of the liquid-vapor ejector and the units on its basis, that allows to determine the optimal operating conditions of the system on the basis of this ejector. Analysis of the LVE exergetic efficiency and the unit as a whole made it possible to conclude that it is appropriate to use this type of ejector in the vacuum cooling systems of biodiesel production.

Keywords

Vacuum cooling system
Liquid-vapor ejector
Biodiesel production
CFD simulation
Exergetic efficiency