Thermo-Economic Evaluation of a Power and Freshwater Production System Including a Liquid Metal Magnetohydrodynamic Unit Driven By a Concentrated Solar Tower and Biogas

Document Type : Research Article

Authors

Department of Mechanical Engineering, Urmia University, Urmia, Iran.

Abstract

The use of liquid metal magnetic hydrodynamic energy units, despite reducing maintenance costs and improving reliability, requires a high-temperature source, which must be supplied by fossil fuels. The present study aims to cover this shortage by proposing a new design for liquid metal magnetic hydrodynamic power and desalination cogeneration plant by applying concentrating solar power. The results show that 73.2 kW and 21.06 m3/day power and fresh water can be produced by the proposed cogeneration plant, respectively. The energy utilization factor and total exergy efficiency are 97.45 and 26.34%. The results also indicate that the receiver accounts for the highest exergy destruction, followed by the heliostat with 270.4 kW and 240.9 kW, respectively. Increasing the efficiency of the humidifier/dehumidifier or reducing the mass flow rate of the second magnetic hydrodynamic loop improves the energetic and exergetic performances of the system. Besides, the receiver and solar tower have the highest cost of investment and maintenance, and the total unit cost of the system is 103.4 $/GJ.

Keywords

Main Subjects

References

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Amirkabir Journal of Mechanical Engineering
Volume 53, Issue 11
February 2022
Pages 5551-5572

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