Parametric study of an ORC-EJR cycle based on energy and exergy analysis for producing power, heating, cooling and hydrogen

Articles in Press

Document Type : Research Paper

Authors

1 Mechanical Engineering Department, Engineering Faculty, Urmia University, Urmia, Iran

2 Uromie Uni.

3 Mechanical Engineering Department, Faculty of Engineering, Urmia University, Urmia, Iran

4 Faculty of Science and Engineering, Anglia Ruskin University, Chelmsford, UK

10.22104/hfe.2025.7274.1333

Abstract

Due to the environmental damage associated with fossil fuels and their finite supply, renewable resources present a viable alternative, leading to extensive research in this area in recent years. Additionally, in recent times, utilizing various power, cooling, heating, and hydrogen generation systems has emerged as another strategy to enhance the utilization of current energy resources. In this study, a novel multigeneration system that leverages geothermal energy is introduced, and its performance is modeled and analyzed. This innovative multigeneration system combines an organic Rankine cycle, an ejector refrigeration system, a local water heating unit, and a hydrogen generation system. The impact of various factors on the system's efficiency has been examined. The findings indicate that the system achieves energy and exergy efficiencies of 49.68% and 48.01%, respectively. The total power output generated by the system from the ORC turbine and a single TEG is 499.89 kW. Moreover, this system generates a daily total of 166.9 kg of hydrogen and the coefficient of performance (COP) for the system is measured at 0.355. Furthermore, increasing the temperature of the geothermal fluid enhances the exergetic efficiency, power generation, hydrogen production, and cooling load of the system, while decreasing energetic efficiency and the COP. Finally, it is inferred that an increase in the geothermal mass flow rate corresponds to elevated power generation, higher hydrogen production rates, an increased cooling load in the system, and a decline in energy and exergy efficiency.

Keywords

Main Subjects

Hydrogen, Fuel Cell & Energy Storage

Articles in Press, Accepted Manuscript
Available Online from 15 January 2025

Files

Share

How to cite

Statistics