Thermodynamic Analysis of a Novel Power, Cooling, Hydrogen and Oxygen Multi-Generation Combined Cycle Based on the Sabalan Geothermal Wells

Document Type : Research Article

Authors

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

2 Department of Mechanical Engineering, Mechanical Engineering Faculty, University of Tabriz, Tabriz, Iran

Abstract

The use of multi-generation systems is rapidly developing in the world. Although Sabalan geothermal field is one of the important geothermal fields of Iran, the possibility of using the multi-generation systems has not yet been performed. As an attempt to fulfill the gap in the field, a new cooling, hydrogen, oxygen, and power multi-generation cycle for using Sabalan geothermal wells is proposed and analyzed. In the proposed system, the double flash configuration from the Sabalan geothermal wells as the heat source is used. An organic Rankine cycle is used to generate power for the proton exchange membrane for hydrogen production and a LiBr-H2O absorption refrigeration system is used for cooling production. First, a simulation was done by Engineering Equation Solver software and then the effects of some design parameters, such as separators pressures, evaporator temperature, pinch point temperature difference in the Rankine evaporator, generator temperature and ambient temperature on the integrated system performance are studied. A parametric study shows that the value of the thermal efficiency and cooling continuously increases with separators' pressures. According to the results, the value of the net output power, hydrogen production, cooling and thermal and exergy efficiencies of the cogeneration system are obtained as 14739 kW, 13.25 kg/hr, 10925 kW, 22.34% and 50.62% respectively.

Keywords

Main Subjects

References

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Amirkabir Journal of Mechanical Engineering
Volume 53, Issue 1
April 2021
Pages 135-154

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