Submission
Design of the gas ejector for ejection refrigeration system based on CFD simulation
DOI: 10.18462/iir.compr.2017.0247
Session: Centrifugal compressors and ejectors. Chaired by Armin Hafner, Hermann Halozan, Michael Khmelniuk
Accept state: Submission accepted
Authors
| Name | Organization | |
|---|---|---|
| Dariusz Butrymowicz, Prof. Dr. hab. | Bialystok University of Technology | |
| Jerzy Gagan, Dr. | Bialystok University of Technology | |
| Kamil Śmierciew, Dr. | Bialystok University of Technology |
Abstract
Renewable energy sources may be applied to drive refrigeration and air-conditioning systems, e.g. solar radiation, geothermal resources, heat derived from biomass or waste heat rejected form various thermal processes. In this case absorption refrigeration systems and ejection systems may be used for cooling applications. For buildings with applied central air conditioning systems it comprises a substantially larger share, even one-third of electric energy consumption. Moreover, air-conditioning creates two sources of environmental pollution: 1) direct emission of greenhouse gases, especially for working fluids belonging to HFC group, and 2) emission of the greenhouse gases during generation of electric power to drive the system. Both sources are contributing significantly to the global warming effect. Additionally, with energy cost rising constantly, industry is looking for reduction of electric energy expenses as a means of lowering their fixed costs in order to stay competitive. Paper presents results of numerical simulation of the gas ejector dedicated to the low-temperature driven ejection refrigeration system operating for district cooling.
Keywords
Ejection refrigeration systems; CFD modelling; ejector; prototype design