Thermodynamic analysis of performance of two-phase injector

Andrzej Pawluczuk , Kamil Leszek Śmierciew , Dariusz Butrymowicz

Abstract

Energy required to drive a mechanical pump in thermally driven systems in most of the cases is a few percent of the overall energy balance of the system and in most cases is of the order of magnitude 1%. The most important problem is a special difficulty to select of a commercially available liquid pump for the thermal driven cycle. Mechanical liquid pump liquid is the only element of the refrigeration system that consume electric power. It is desirable that the whole system would be fully thermal driven one, without consumption of electric power to drive. Two-phase vapour-liquid ejectors may be thought as required alternative. They are using vapour that is generated already in the system; operates as pre-heater of liquid phase supplied to the vapour generator that additionally improve the system efficiency; and have no moving parts. Paper deals with thermodynamic analysis of operation of the system with two-phase vapour-liquid injector as a liquid pump in refrigeration systems. New perspective fluids were selected and tested as potential working fluids in the discussed system. Results of thermodynamic analysis were presented and discussed in the paper.
Author Andrzej Pawluczuk (FME / DMDTE)
Andrzej Pawluczuk,,
- Department of Machinery Design and Thermal Engineering
, Kamil Leszek Śmierciew (FME / DMDTE)
Kamil Leszek Śmierciew,,
- Department of Machinery Design and Thermal Engineering
, Dariusz Butrymowicz (FME / DMDTE)
Dariusz Butrymowicz,,
- Department of Machinery Design and Thermal Engineering
Pages1-8
Publication size in sheets0.5
Book Minea Vasile (eds.): Refrigeration Science and Technology Proceedings: 25th IIR International Congress of Refrigeration, 2019, International Institute of Refrigeration, ISBN 978-2-36215-035-7, 5052 p.
Keywords in Englishinjector, compression efficiency, ORC, ejection refrigeration system, refrigerants, two-phase ejector
DOIDOI:10.18462/iir.icr.2019.0657
Internal identifierROC 19-20
Languageen angielski
Score (nominal)0
Score sourceconferenceList
ScoreMinisterial score = 0.0, 29-10-2019, ChapterFromConference
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