Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5477168 | Energy | 2016 | 12 Pages |
Abstract
This paper provides a performance comparison of fixed ejectors with and without swirl flow at the inlet of the motive and suction nozzles installed in a CO2 supermarket refrigeration system. The Coefficient of Performance (COP) of the multi-ejector-based refrigeration system is dependent on the design of this device. The literature suggests that one of the possible ejector efficiency improvements can be performed using a swirl generator at the inlet of the motive nozzle. Therefore, a swirl generator was simulated for different size CO2 ejectors under typical operating conditions in a supermarket and for a range of rotational speeds. To compare the potential of both solutions, the device performance was numerically simulated using a validated Homogeneous Equilibrium Model (HEM) model for the same transcritical parameters. A global efficiency was presented and discussed for both fixed ejector types.
Related Topics
Physical Sciences and Engineering
Energy
Energy (General)
Authors
Jakub Bodys, Jacek Smolka, Michal Palacz, Michal Haida, Krzysztof Banasiak, Andrzej J. Nowak, Armin Hafner,