Development of solar-driven charging station integrated with hydrogen as an energy storage option. (1st April 2022)

• Record Type: Journal Article
• Authors: Erdemir, Dogan; Dincer, Ibrahim
• Is Part Of: Energy conversion and management. Volume 257(2022)
• Publication Date: 2022-04-01
• Subjects: Hydrogen -- Charging station -- Energy storage -- Energy management -- Fuel cell -- Electric vehicle -- Clean energy; Direct energy conversion -- Periodicals; Energy storage -- Periodicals; Energy transfer -- Periodicals; Énergie -- Conversion directe -- Périodiques; Direct energy conversion; Periodicals; 621.3105
• DOI: 10.1016/j.enconman.2022.115436
• Languages: English
• ISSNs: 0196-8904

Abstract

Highlights: This study develops a solar-driven and hydrogen-integrated charging station. Hydrogen is included in the system as an energy storage option for dynamic conditions. The system is analyzed and assessed through energy and exergy methods. Both energy and exergy efficiencies tend to decrease with increasing the PV surface area. Abstract: This study deals with the development and assessment of a new charging station, which is driven by solar energy and integrated with hydrogen production, storage, and utilization systems. A thermodynamic analysis based on energy and exergy approaches is performed to analyze the system and assess its performance. The system works under two operational periods: solar-powered charging points for power output and hydrogen production during the daytime and power generation via hydrogen fuel cells during periods when solar energy is not adequate enough. The present work is, in this regard, unique and is conducted based on some parametric and case studies. Furthermore, it is observed that hydrogen is a promising fuel option and carbon-free energy storage medium. The energy needed for hydrogen storage process which covers both compression and cooling is relatively lower than the energy demand of the charging station. Thus, it is possible to develop a solar-driven off-grid charging station with the integration of hydrogen. The need for grid power reduces with the increase in the PV surface area. In order to achieve an off-grid power supply, the amounts of hydrogen required for the charging station capacities of 100, 200, 300, 400 and 500 kW are 51.8, 125.8, 234.1, 370.9 and 507.7 kg, respectively. In order to have grid-independent and dedicated charging stations at the capacities of 100, 200, 300, 400 and 500 kW, the total PV surface area is needed to be 2560 m 2, 4860 m 2, 6580 m 2, 10790 m 2 and 15575 m 2, respectively.