State of the art in the identification of two-phase transonic flow phenomena in transcritical CO2 ejectors

Krzysztof Banasiak; Armin Hafner; Michal Palacz

doi:10.18462/iir.icr.2015.0045

State of the art in the identification of two-phase transonic flow phenomena in transcritical CO₂ ejectors

Krzysztof Banasiak
, Armin Hafner
, Michal Palacz

Department of Thermal Technology (RIE/RIE6)

SINTEF

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

Abstract

The paper presents current developments in both experimental and numerical identification of two-phase flow phenomena in transcritical CO₂ ejectors. Neither explicit identification/classification of flow patterns nor determination of velocity field for the CO₂ ejector passages, based on experimental methods of flow visualization, has been reported so far. The first trials for determination of spatial fields for the Mach number, pressure, and density inside the CO₂ ejector passages, modelled with a validated CFD tool, were reviewed. The influence of the phase transition relaxation on the converging-diverging motive nozzle performance was analysed. Insufficient qualitative and quantitative identification of the phenomena influencing the mass, momentum, and energy transfer was discussed.

Original language	English
Title of host publication	24th IIR International Congress of Refrigeration, ICR 2015
Publisher	International Institute of Refrigeration
Pages	1800-1807
Number of pages	8
ISBN (Electronic)	9782362150128
DOIs	https://doi.org/10.18462/iir.icr.2015.0045
Publication status	Published - 2015
Event	24th IIR International Congress of Refrigeration, ICR 2015 - Yokohama, Japan Duration: 16 Aug 2015 → 22 Aug 2015

Publication series

Name	Refrigeration Science and Technology
ISSN (Print)	0151-1637

Conference

Conference	24th IIR International Congress of Refrigeration, ICR 2015
Country/Territory	Japan
City	Yokohama
Period	16/08/15 → 22/08/15

ASJC Scopus subject areas

Control and Systems Engineering
Electrical and Electronic Engineering
Mechanical Engineering
Condensed Matter Physics

Access to Document

10.18462/iir.icr.2015.0045

Cite this

@inproceedings{25fc965e6e3b4324a0abd9e7e495775a,

title = "State of the art in the identification of two-phase transonic flow phenomena in transcritical CO2 ejectors",

abstract = "The paper presents current developments in both experimental and numerical identification of two-phase flow phenomena in transcritical CO2 ejectors. Neither explicit identification/classification of flow patterns nor determination of velocity field for the CO2 ejector passages, based on experimental methods of flow visualization, has been reported so far. The first trials for determination of spatial fields for the Mach number, pressure, and density inside the CO2 ejector passages, modelled with a validated CFD tool, were reviewed. The influence of the phase transition relaxation on the converging-diverging motive nozzle performance was analysed. Insufficient qualitative and quantitative identification of the phenomena influencing the mass, momentum, and energy transfer was discussed.",

author = "Krzysztof Banasiak and Armin Hafner and Michal Palacz",

year = "2015",

doi = "10.18462/iir.icr.2015.0045",

language = "English",

series = "Refrigeration Science and Technology",

publisher = "International Institute of Refrigeration",

pages = "1800--1807",

booktitle = "24th IIR International Congress of Refrigeration, ICR 2015",

note = "24th IIR International Congress of Refrigeration, ICR 2015 ; Conference date: 16-08-2015 Through 22-08-2015",

}

Banasiak, K, Hafner, A & Palacz, M 2015, State of the art in the identification of two-phase transonic flow phenomena in transcritical CO₂ ejectors. in 24th IIR International Congress of Refrigeration, ICR 2015. Refrigeration Science and Technology, International Institute of Refrigeration, pp. 1800-1807, 24th IIR International Congress of Refrigeration, ICR 2015, Yokohama, Japan, 16/08/15. https://doi.org/10.18462/iir.icr.2015.0045

State of the art in the identification of two-phase transonic flow phenomena in transcritical CO₂ ejectors. / Banasiak, Krzysztof; Hafner, Armin; Palacz, Michal.
24th IIR International Congress of Refrigeration, ICR 2015. International Institute of Refrigeration, 2015. p. 1800-1807 (Refrigeration Science and Technology).

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

TY - GEN

T1 - State of the art in the identification of two-phase transonic flow phenomena in transcritical CO2 ejectors

AU - Banasiak, Krzysztof

AU - Hafner, Armin

AU - Palacz, Michal

PY - 2015

Y1 - 2015

N2 - The paper presents current developments in both experimental and numerical identification of two-phase flow phenomena in transcritical CO2 ejectors. Neither explicit identification/classification of flow patterns nor determination of velocity field for the CO2 ejector passages, based on experimental methods of flow visualization, has been reported so far. The first trials for determination of spatial fields for the Mach number, pressure, and density inside the CO2 ejector passages, modelled with a validated CFD tool, were reviewed. The influence of the phase transition relaxation on the converging-diverging motive nozzle performance was analysed. Insufficient qualitative and quantitative identification of the phenomena influencing the mass, momentum, and energy transfer was discussed.

AB - The paper presents current developments in both experimental and numerical identification of two-phase flow phenomena in transcritical CO2 ejectors. Neither explicit identification/classification of flow patterns nor determination of velocity field for the CO2 ejector passages, based on experimental methods of flow visualization, has been reported so far. The first trials for determination of spatial fields for the Mach number, pressure, and density inside the CO2 ejector passages, modelled with a validated CFD tool, were reviewed. The influence of the phase transition relaxation on the converging-diverging motive nozzle performance was analysed. Insufficient qualitative and quantitative identification of the phenomena influencing the mass, momentum, and energy transfer was discussed.

UR - https://www.scopus.com/pages/publications/85016769592

U2 - 10.18462/iir.icr.2015.0045

DO - 10.18462/iir.icr.2015.0045

M3 - Conference contribution

AN - SCOPUS:85016769592

T3 - Refrigeration Science and Technology

SP - 1800

EP - 1807

BT - 24th IIR International Congress of Refrigeration, ICR 2015

PB - International Institute of Refrigeration

T2 - 24th IIR International Congress of Refrigeration, ICR 2015

Y2 - 16 August 2015 through 22 August 2015

ER -