Share
IIR document
A R744 transcritical refrigeration test rig equipped with a transparent two-phase ejector for flow visualisation: experimental study.
Number: 1215
Author(s) : HAIDA M., FINGAS R., SZWAJNOCH W., SMOLKA J., PALACZ M., BODYS J., NOWAK A. J.
Summary
The R744 transcritical system has high thermodynamic losses during expansion process and there is potential to improve its operation by understanding the complexity of phenomena occurring inside the R744 two-phase ejector. Thus, a two-phase ejector has to be designed based on the accurate numerical model to observe flow behaviour during expansion, mixing processes in mixing section and kinetic energy conversion into pressure energy in diffuser. The main aim of this paper is to perform an experimental study of the R744 transcritical system equipped with the transparent ejector based on the steady-state and long-term system operation. The ejector with a transparent pre-mixer, mixer and diffuser using smooth Plexiglas material was designed using the ejectorPL numerical CFD tool. Determination of the velocity field and analysis of flow structure inside the ejector will be used for additional device shape optimisation. Furthermore, an unsteady effect of the ejector work during change of system operating conditions is investigated. The ejector efficiency up to 30% was recorded for motive nozzle pressure of 90 bar.
Available documents
Format PDF
Pages: 8
Available
Public price
20 €
Member price*
Free
* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).
Details
- Original title: A R744 transcritical refrigeration test rig equipped with a transparent two-phase ejector for flow visualisation: experimental study.
- Record ID : 30027762
- Languages: English
- Source: IIR Rankine Conference 2020.
- Publication date: 2020/07/31
- DOI: http://dx.doi.org/10.18462/iir.rankine.2020.1215
Links
See other articles from the proceedings (75)
See the conference proceedings
Indexing
-
Analysis of the R744 flow through the ejector d...
- Author(s) : BODYS J., PALACZ M., HAIDA M., SMOLKA J., NOWAK A. J.
- Date : 2020/12/07
- Languages : English
- Source: 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020). Proceedings. Kyoto, Japon, December 7-9th 2020.
- Formats : PDF
View record
-
Modelling and experimental study of an ejector ...
- Author(s) : BOUZIANE A., BENSAFI A., HABERSCHILL P.
- Date : 2012/06/25
- Languages : English
- Source: 10th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2012). Proceedings. Delft, The Netherlands, June 25-27, 2012.
- Formats : PDF
View record
-
Modélisation et étude expérimentale d'une machi...
- Author(s) : BOUZIANE A., HABERSCHILL P.
- Date : 2012/12
- Languages : French
- Source: Revue générale du Froid & du Conditionnement d'air - vol. 102 - n. 1129
View record
-
Comparison and validation of one-dimensional mo...
- Author(s) : YOU C., MICHEL B., REVELLIN R.
- Date : 2022/06/13
- Languages : English
- Source: 15th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2022). Proceedings. Trondheim, Norway, June 13-15th 2022.
- Formats : PDF
View record
-
Experimental test rig for the visualisation stu...
- Author(s) : BODYS J., PALACZ M., HAIDA M., SMOLKA J., NOWAK A. J.
- Date : 2021/05
- Languages : English
- Source: 2021 Purdue Conferences. 18th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
View record