Cristin-resultat-ID: 1480377
Sist endret: 3. juli 2017, 10:13
Resultat
Vitenskapelig antologi/Konferanseserie
2010

9th IIR-Gustav Lorentzen Conference on Natural Working Fluids

Bidragsytere:
  • . GL 2010

Utgiver/serie

Utgiver

International Institute of Refrigeration
NVI-nivå 1

Serie

Science et technique du froid
ISSN 0151-1637
e-ISSN 1766-0408
NVI-nivå 1

Om resultatet

Vitenskapelig antologi/Konferanseserie
Publiseringsår: 2010
Hefte: 2010-2
ISBN: 9782913149748

Klassifisering

Fagfelt (NPI)

Fagfelt: Energi
- Fagområde: Realfag og teknologi

Beskrivelse Beskrivelse

Tittel

9th IIR-Gustav Lorentzen Conference on Natural Working Fluids

Sammendrag

This work describes measurement results of ejectors manufactured and experimentally investigated at SINTEF Energy Research / NTNU. The ejectors are experimentally investigated in an oil free R-744 test facility in order to focus on the ejector properties and behaviour. Five different ejectors were experimentally investigated at equal boundary conditions. The results are promising with pressure lifts close to 9 bars at low mass entrainment ratios of 0,22 and suction pressure ratios of 1,24. At an higher mass entrainment ratio of 0,56 and suction pressure ratio of 1,14 a pressure lift of 6,5 bar was achieved with the smallest mixing section. Best performances were measured with the smallest mixing section diameter (3 mm) and a short nozzle with an ID of 0.9 mm The results are very promising and show a very good COP improvement potential for R-744 transcritical process deploying an ejector, as the pressure ratio for a compressor could be reduced by close to 10 bars. Copyright © “2010” IIR/IIF

Bidragsytere

. GL 2010

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    Redaksjonskommisjon
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Kapitler/Artikler Kapitler/Artikler

Experimental investigation of different ejector geometries for R-744 transcritical systems.

Hafner, Armin; Ladam, Yves; Andresen, Trond; Nekså, Petter. 2010, International Institute of Refrigeration. SINTEFENVitenskapelig Kapittel/Artikkel/Konferanseartikkel

Reversible R744 (CO2) heat pumps applied in public trains.

Hafner, Armin; Christensen, Øystein Torp; Nekså, Petter. 2010, International Institute of Refrigeration. SINTEFENVitenskapelig Kapittel/Artikkel/Konferanseartikkel

1-D computational model of a motive nozzle for the R744 two-phase ejector.

Banasiak, Krzysztof; Hafner, Armin; Smolka, Jacek. 2010, International Institute of Refrigeration. SINTEFEN, PÒWGVitenskapelig Kapittel/Artikkel/Konferanseartikkel
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