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

Yuanqu Qi and Yuefeng Yu
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Yuanqu Qi: School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Yuefeng Yu: School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Energies, 2016, vol. 9, issue 9, 1-13

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.

Keywords: twin screw expander; geometric model; thermodynamic model; working process; leakage analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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