Príspevok
EXPERIMENTAL INVESTIGATION OF A TWO-PHASE EJECTOR IN APPLICATION TO PROPANE SYSTEMS
DOI: 10.18462/iir.compr.2024.0645
Sekcia: Special compressors and components II
Stav prijatia: Príspevok prijatý
Autori
| Meno | Organizácia | |
|---|---|---|
| Dariusz Butrymowicz | Bialystok University of Technology | |
| Jerzy Gagan | Bialystok University of Technolog | |
| Michał Łukaszuk | Bialystok University of Technolog | |
| Tomasz Mania | Frizo Ltd., Poland | |
| Andrzej Pawluczuk | Bialystok University of Technolog | |
| Kamil Śmierciew | Bialystok University of Technolog |
Abstrakt
Ejectors are mainly applied in refrigeration systems instead mechanical compressor, for increase the pressure from evaporation to condensation level. Recently, systems with ejector as a booster compressor were introduced, especially for CO2 refrigeration systems. The application of ejector as a booster compressor allow for a significant extension of the range of available operating parameters of the heat pump, especially in the high-temperature region. The paper presents and discusses the experimental studied performed for the case of propane as a working fluid. The investigations of the four ejector geometries were carried out on a specially designed test stand. The tests were carried out for four different motive nozzle positions in relation to mixing chamber inlet (0.0 mm; 0.5 mm; 1.0 mm and 1.5 mm). Different discharge pressure were provided in the test. The working fluid used in the experiments was propane. The pressure and temperature distributions along the ejector will be shown. Based on the experimental investigation the velocity coefficients of motive nozzle and mixing chamber were determined.
Kľúčové slová
propane; two-phase ejector; heat pump; hybrid compressor-ejector systems