[en] This paper presents the results of an experimental study carried out on a prototype of hermetic scroll expander, integrated into a gas cycle test rig, whose working fluid is R245fa. This system was designed to test only the performance of the expander. It is mainly made up of a scroll compressor, a scroll expander, a heat exchanger and a by-pass valve. The latter is used to adjust the pressure ratio imposed to the expander. The expander is originally a compressor used for heat pump applications and characterized by a nominal power input of 2.5 kW. Performance of the expander is evaluated in terms of isentropic effectiveness and filling factor as function of the main operating conditions. The study also investigates the impact of oil mass fraction on the expander performance. Using the experimental data, parameters of a simulation model of the expander are identified. The model is finally used to analyze the measured performance of the expander.
Disciplines :
Mechanical engineering
Author, co-author :
Lemort, Vincent ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Turbomachines et propulsion aérospatiale
Quoilin, Sylvain ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Thermotechnique
Pire, Christophe; Université de Liège - ULiège
Language :
English
Title :
Experimental investigation on a hermetic scroll expander
Publication date :
September 2009
Event name :
7th International IIR Conference on Compressors 2009
Event organizer :
IIR
Event place :
Papiernička, Slovakia
Event date :
du 30 septembre 2009 au 2 octobre 2010
Audience :
International
Main work title :
Proceedings of the 7th International IIR Conference on Compressors
