A multigeneration cascade system using ground-source energy with cold recovery: 3E analyses and multi-objective optimization

Alireza Mahmoudan, Parviz Samadof, Siamak Hosseinzadeh and Davide Astiaso Garcia

Energy, 2021, vol. 233, issue C

Abstract: A novel integrated energy system based on a geothermal heat source and a liquefied natural gas heat sink is proposed in this study for providing heating, cooling, electricity power, and drinking water simultaneously. The arrangement is a cascade incorporating a flash-binary geothermal system, a regenerative organic Rankine cycle, a simple organic Rankine cycle, a vapor compression refrigeration cycle, a regasification unit, and a reverse osmosis desalination system. Energy, exergy, and exergoeconomic methods are employed to analyze the suggested system. A parametric study based on decision variables is carried out to better assess the system performance. Four different multi-objective optimization problems are also carried out. At the most excellent trade-off solution specified by the TOPSIS method, the system attains 29.15% exergy efficiency and 1.512 $/GJ total product cost per exergy unit. The main output products are consequently calculated to be 101.07 kg/s cooling water, 570.44 kW net output power, and 81.57 kg/s potable water.

Keywords: Multi-generation systems; Geothermal-driven systems; Liquefied natural gas heat sink; Desalination; Exergoeconomic analysis; Multi-objective optimization (search for similar items in EconPapers)
Date: 2021
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Citations: View citations in EconPapers (16)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:233:y:2021:i:c:s036054422101433x

DOI: 10.1016/j.energy.2021.121185

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