Title: Design and analysis of a novel multi-generation plant utilising geothermal energy

Authors: Fatih Yilmaz; Murat Ozturk; Resat Sebas

Addresses: Faculty of Technology, Mechatronic Engineering, Isparta University of Applied Sciences, Isparta 32200, Turkey ' Faculty of Technology, Mechatronic Engineering, Isparta University of Applied Sciences, Isparta 32200, Turkey ' Faculty of Technology, Mechatronic Engineering, Isparta University of Applied Sciences, Isparta 32200, Turkey

Abstract: This developed combined plant focuses on the thermodynamic and environmental impact analysis of clean and sustainable electricity, heating, green hydrogen, and distilled water production with geothermal energy. This work includes a double flashing geothermal cycle, a reheat CO₂ Rankine cycle (re-tRC), a desalination unit (MED), and PEM electrolysis. Using energetic and exergetic efficiency methodologies, the system's performance changes are examined parametrically. The results are impressive: our system produces a net of 1,857 kW of electricity, and 28.33 kgs^-1 distilled water. As a result, the system can produce 0.004595 kgs^-1 of green hydrogen at 18.40% energy efficiency and 17.71% exergy efficiency.

Keywords: energy; exergy; geothermal energy; hydrogen; transcritical cycle.

DOI: 10.1504/IJEX.2024.142631

International Journal of Exergy, 2024 Vol.45 No.3/4, pp.296 - 310

Received: 13 Jul 2024
Accepted: 27 Sep 2024
Published online: 12 Nov 2024 *

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