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Energies 2016, 9(9), 694; doi:10.3390/en9090694

Thermodynamic Simulation on the Performance of Twin Screw Expander Applied in Geothermal Power Generation

School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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Author to whom correspondence should be addressed.
Academic Editor: Kamel Hooman
Received: 23 June 2016 / Revised: 1 August 2016 / Accepted: 23 August 2016 / Published: 31 August 2016
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Abstract

A three-dimensional (3D) geometry model of twin screw expander has been developed in this paper to measure and analyze geometric parameters such as groove volume, suction port area, and leakage area, which can be described as functions of rotation angle of male rotor. Taking the suction loss, leakage loss, and real gas effect into consideration, a thermodynamic model is developed using continuity and energy conservation equation. The developed model is verified by comparing predicted results of power output and internal efficiency with experimental data. Based on the model, the relationship between mass flow rate through inlet port and leakage path with rotation angle of male rotor as well as effects of the inlet parameter and operating parameter on the performance of the expander are analyzed. View Full-Text
Keywords: twin screw expander; geometric model; thermodynamic model; working process; leakage analysis twin screw expander; geometric model; thermodynamic model; working process; leakage analysis
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Qi, Y.; Yu, Y. Thermodynamic Simulation on the Performance of Twin Screw Expander Applied in Geothermal Power Generation. Energies 2016, 9, 694.

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