Proposing a Hydrogen Liquefaction Cycle to Store Geothermal Energy in an Innovative Multi-Generation System

Articles in Press

Document Type : Research Paper

Authors

1 Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran

2 Department of Mechanical Engineering, West Tehran Branch, Islamic Azad University, Tehran, Iran

3 Department of Mechanical Engineering, Imam Khomeini International University, Qazvin, Iran

4 Department of Mechanical and Aerospace Engineering, Polytechnic University of Turin, Italy

Abstract

Energy storage has emerged as a significant area of interest, particularly in the realm of renewable energy. Geothermal energy, in particular, has gained prominence due to its eco-friendly nature. Researchers have been focusing on developing more efficient energy storage systems through various methods. This research project revolves around two key aspects: the innovative utilization of geothermal energy to generate liquid hydrogen for storage, and the use of geothermal cooling through an absorption refrigeration cycle to cool the hydrogen gas. The proposed multi-generation system harnesses geothermal energy to produce hot water, fresh water, hydrogen, and power. As the geothermal flow passes through the ammonia water absorption cooling unit, its temperature decreases before entering the organic Rankine power generation unit and heat exchanger to generate power and hot water. The system is thoroughly analyzed using energy, exergy, and economic assessments, with a specific focus on the hydrogen liquefaction unit. The total annual cost of the system is calculated to be 1.49 million dollars, with a minimum selling price estimated at 2.71 dollars. The specific energy consumption in this multi-generation system is determined to be 8.51 kWh per kilogram of liquid hydrogen.

Keywords

Main Subjects

Hydrogen, Fuel Cell & Energy Storage

Articles in Press, Accepted Manuscript
Available Online from 20 December 2024

Files

Share

How to cite

Statistics