Thermodynamic analysis of a double-flash geothermal system with residual heat input from a multi-stage Brayton cycle
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Abstract
This paper presents the thermodynamic analysis of a double-flash geothermal system with waste heat input from a multistage Brayton cycle. Heat recovery is proposed in an original arrangement and other arrangements are considered as variants to obtain the most optimal configuration. Thermodynamic models are built and analyzed with EES software. The results show that heat recovery can increase the steam mass flow of the low-pressure turbine by 1.6 kg/s. It is found that the geothermal system with heat recovery can achieve a power output of 59,331 kW. Finally, it is noted that waste heat recovery can increase the power output by 2.62%.
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