Experimental study on an open-drive scroll expander integrated into an ORC (Organic Rankine Cycle) system with R245fa as working fluid

Declaye, Sébastien; Quoilin, Sylvain; Guillaume, Ludovic; Lemort, Vincent

doi:10.1016/j.energy.2013.04.003

Article (Scientific journals)

Experimental study on an open-drive scroll expander integrated into an ORC (Organic Rankine Cycle) system with R245fa as working fluid

Declaye, Sébastien; Quoilin, Sylvain; Guillaume, Ludovic et al.

2013 • In Energy, 15, p. 173-183

Peer Reviewed verified by ORBi

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https://hdl.handle.net/2268/150176

DOI
10.1016/j.energy.2013.04.003

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Keywords :

Organic Rankine Cycle; Scroll Expander; CHP

Abstract :

[en] The present paper focuses on the experimental characterization of an open-drive scroll expander integrated into an Organic Rankine cycle using R245fa as working fluid. The expander is a commercially available air compressor that was modified to operate in expander mode. The ORC (Organic Rankine Cycle) system is designed for a nominal heat input of 20 kW and a nominal net power output of 1.8 kW. A total of 74 steady-state operating points are measured to evaluate the expander performance over a wide range of conditions. The operating parameters that are varied include the inlet pressure (from 9 to 12 bar), outlet pressure (from 1.5 to 4 bar) and rotational speed (from 2000 to 3500 rpm). The maximum isentropic efficiency and shaft power are, respectively, 75.7% and 2.1 kW. A maximum cycle efficiency of 8.5% is reached for evaporating and condensing temperatures of 97.5 °C and 26.6 °C respectively. For most of the tests, hot water is produced in the condenser and the system therefore behaves as a CHP (combined heat and power). Depending on the water temperature requirement, a power to heat ratio varying between 1.9% and 11.8% is obtained. Water over 50 °C can be produced with a power to heat ratio higher than 8%. The experimental data points are then used to generate a performance map of the expander. This performance map allows for simulation of the use of such an expander in other ORC system

Disciplines :

Energy

Author, co-author :

Declaye, Sébastien ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Systèmes énergétiques

Quoilin, Sylvain ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Systèmes énergétiques

Guillaume, Ludovic ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Systèmes énergétiques

Lemort, Vincent ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Systèmes énergétiques

Language :

English

Title :

Experimental study on an open-drive scroll expander integrated into an ORC (Organic Rankine Cycle) system with R245fa as working fluid

Publication date :

15 June 2013

Journal title :

Energy

ISSN :

0360-5442

eISSN :

1873-6785

Publisher :

Pergamon Press - An Imprint of Elsevier Science, Oxford, United Kingdom

Volume :

Pages :

173-183

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 11 June 2013

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