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Session: Session 4A: Volumetric Expanders (1)
Session starts: Tuesday 10 September, 14:00
Presentation starts: 15:20
Room: Olympia

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Marco Francesconi (University of Pisa)
Gianluca Pasini (University of Pisa)
Luca Sani (University of Pisa)
Marco Antonelli (University of Pisa)

Abstract:
Small scale power plants applicability is often limited by economics constraints. Especially, the need to reduce costs requires a suitable tune of the expander devices, that are often derived from volumetric compressors. For this reason, experimental analysis plays a relevant step in the research of volumetric machine and for their suitability to the market. This work deals about the experimental test of a commercial 3 kWe twin screw compressor which has been used as a saturated steam expander. Inlet pressures between 2 and 8 bar and rotating speeds ranging from 1000 to 5000 rpm were used as test conditions. The isentropic efficiency and the delivered power were considered as key performance indicators.