CO2 ejector modelling using CFD: current status

Knut Ringstad; Yosr Allouche; Paride Gullo; Krzysztof Banasiak; Armin Hafner

doi:10.18462/iir.icr.2019.1870

CO2 ejector modelling using CFD: current status

Knut Ringstad, Yosr Allouche, Paride Gullo, Krzysztof Banasiak, Armin Hafner

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

This paper presents the current status of CFD modelling applied to CO2 two-phase ejectors for refrigeration applications. Previous reviews on CO2 ejector technology have provided detailed analysis and thorough discussion about the optimal design and performance parameters. However, there is still a lack of information about CFD modelling of CO2 ejectors, mainly when it comes to the accuracy of the two-phase ejector models. The ultimate goal of this paper is to provide a complete overview about CFD modelling of two-phase CO2 ejectors for refrigeration applications, as mainly analytical approaches were previously discussed. The fundamental background for the research work carried out within CO2 two-phase modelling using CFD is presented through this review. Moreover, it highlights the main challenges that are still needed to be overcome mainly related to turbulence modelling, fluid properties and 3D-effects in multi-phase flows.

Original language	English
Title of host publication	ICR2019 – The 25th IIR International Congress of Refrigeration
Editors	Vasile Minea
Publication date	27. Aug 2019
Pages	2813-2822
Article number	1870
ISBN (Electronic)	9782362150357
DOIs	https://doi.org/10.18462/iir.icr.2019.1870
Publication status	Published - 27. Aug 2019

Keywords

CFD
Expansion Work Recovery
Multi-Phase Flow
R744
Trans-Critical Refrigeration System
Two-Phase Ejector

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10.18462/iir.icr.2019.1870

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Cite this

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title = "CO2 ejector modelling using CFD: current status",

abstract = "This paper presents the current status of CFD modelling applied to CO2 two-phase ejectors for refrigeration applications. Previous reviews on CO2 ejector technology have provided detailed analysis and thorough discussion about the optimal design and performance parameters. However, there is still a lack of information about CFD modelling of CO2 ejectors, mainly when it comes to the accuracy of the two-phase ejector models. The ultimate goal of this paper is to provide a complete overview about CFD modelling of two-phase CO2 ejectors for refrigeration applications, as mainly analytical approaches were previously discussed. The fundamental background for the research work carried out within CO2 two-phase modelling using CFD is presented through this review. Moreover, it highlights the main challenges that are still needed to be overcome mainly related to turbulence modelling, fluid properties and 3D-effects in multi-phase flows.",

keywords = "CFD, Expansion Work Recovery, Multi-Phase Flow, R744, Trans-Critical Refrigeration System, Two-Phase Ejector",

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doi = "10.18462/iir.icr.2019.1870",

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AU - Allouche, Yosr

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AU - Banasiak, Krzysztof

AU - Hafner, Armin

PY - 2019/8/27

Y1 - 2019/8/27

N2 - This paper presents the current status of CFD modelling applied to CO2 two-phase ejectors for refrigeration applications. Previous reviews on CO2 ejector technology have provided detailed analysis and thorough discussion about the optimal design and performance parameters. However, there is still a lack of information about CFD modelling of CO2 ejectors, mainly when it comes to the accuracy of the two-phase ejector models. The ultimate goal of this paper is to provide a complete overview about CFD modelling of two-phase CO2 ejectors for refrigeration applications, as mainly analytical approaches were previously discussed. The fundamental background for the research work carried out within CO2 two-phase modelling using CFD is presented through this review. Moreover, it highlights the main challenges that are still needed to be overcome mainly related to turbulence modelling, fluid properties and 3D-effects in multi-phase flows.

AB - This paper presents the current status of CFD modelling applied to CO2 two-phase ejectors for refrigeration applications. Previous reviews on CO2 ejector technology have provided detailed analysis and thorough discussion about the optimal design and performance parameters. However, there is still a lack of information about CFD modelling of CO2 ejectors, mainly when it comes to the accuracy of the two-phase ejector models. The ultimate goal of this paper is to provide a complete overview about CFD modelling of two-phase CO2 ejectors for refrigeration applications, as mainly analytical approaches were previously discussed. The fundamental background for the research work carried out within CO2 two-phase modelling using CFD is presented through this review. Moreover, it highlights the main challenges that are still needed to be overcome mainly related to turbulence modelling, fluid properties and 3D-effects in multi-phase flows.

KW - CFD

KW - Expansion Work Recovery

KW - Multi-Phase Flow

KW - R744

KW - Trans-Critical Refrigeration System

KW - Two-Phase Ejector

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DO - 10.18462/iir.icr.2019.1870

M3 - Article in proceedings

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BT - ICR2019 – The 25th IIR International Congress of Refrigeration

A2 - Minea, Vasile

ER -

CO2 ejector modelling using CFD: current status

Abstract

Keywords

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