Parallel Work of CO2 Ejectors Installed in a Multi-Ejector Module of Refrigeration System

7th European Thermal-Sciences Conference

Bodys, Jakub^1 ; Palacz, Michal^1 ; Haida, Michal^1 ; Smolka, Jacek^1 ; Nowak, Andrzej J.^1 ; Banasiak, Krzysztof^2 ; Hafner, Armin^3

Institute of Thermal Technology (ITT), Silesian University of Technology (SUT), Gliwice

44-100, Poland^1

SINTEF Energy Research, Trondheim

7465, Norway^2

Norwegian University of Science and Technology, Trondheim

7465, Norway^3

关键词: Computational tools;    Homogeneous equilibrium models;    Motive nozzle;    Operating condition;    Performance analysis;    Refrigeration system;    Stable performance;    Transcritical;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/745/3/032160/pdf
DOI  :  10.1088/1742-6596/745/3/032160

来源: IOP

【 摘 要 】

A performance analysis on of fixed ejectors installed in a multi-ejector module in a CO2refrigeration system is presented in this study. The serial and the parallel work of four fixed-geometry units that compose the multi-ejector pack was carried out. The executed numerical simulations were performed with the use of validated Homogeneous Equilibrium Model (HEM). The computational tool ejectorPL for typical transcritical parameters at the motive nozzle were used in all the tests. A wide range of the operating conditions for supermarket applications in three different European climate zones were taken into consideration. The obtained results present the high and stable performance of all the ejectors in the multi-ejector pack.