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Session: Session 11: Screw expanders
Session starts: Tuesday 13 October, 10:30
Presentation starts: 11:30
Room: 1B Europe

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Abhijeet Chougule ()
Charles Philominraj ()
Ramakrishna Sonde ()

Abstract:
The paper discusses the following aspects on the experimental investigation of effect of operating conditions on volumetric expander (oil flooded twin screw expander) based ORC system. • Mechanical performance: Experimental investigation of flow induced vibrations at expander inlet and its mitigation and development of design optimization tool • Experimental investigation and analysis of oil separator pressure drop and its effect on volumetric/isentropic efficiency of the expander • Variable speed versus constant speed operation - Effect on isentropic efficiency of expander and cycle efficiency. The variable speed operation gives optimum isentropic efficiency (80 to 85%) at all loads of low potency heat recovery for power generation. • Field experience of 30 and 100 kW screw expander based ORC system