Title: The exergoeconomic optimisation and economic sensitive analysis for flash-binary and double flash geothermal power systems

Authors: Chao Luo; Wei Li

Addresses: School of Architecture and Civil Engineering, Huizhou University, Huizhou – 516007, Guangdong, China ' School of Architecture and Civil Engineering, Huizhou University, Huizhou – 516007, Guangdong, China

Abstract: The flash-binary and double flash power technologies are proposed to exploit the geothermal resources in Tibet and western Sichuan, China. The exergoeconomic optimisation and economic sensitive are simulated by genetic algorithm. The results show that the levelised cost of electricity for flash-binary and double systems are US$0.07052/kWh and US$0.0838/kWh respectively before exergoeconomic optimisation, and US$0.06803/kWh and US$0.07331/kWh respectively after exergoeconomic optimisation. When the geofluid mass flow rate and power plant capacity are more than 50 kg/s and 1,100 kW respectively, the plant cost per unit capacity maintains between US$2,000/kW and US$3,500/kW.

Keywords: geothermal power generation; flash-binary system; double flash system; exergoeconomic; sensitivity.

DOI: 10.1504/IJEX.2022.10049102

International Journal of Exergy, 2022 Vol.38 No.4, pp.383 - 397

Received: 08 Oct 2021
Accepted: 28 Oct 2021
Published online: 29 Jul 2022 *

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