Abstract
Renewable energy, such as geothermal, is very effective in reducing the effects of greenhouse gas emissions. Therefore, a geothermal-based multi-generation system can produce commodities for power, hydrogen, liquefied natural gas, cold energy recovery, cooling, and water desalination. Power the multigeneration, energy, and exergy analyses are conducted using Engineering Equation Solver (EES) software. Constraints used are a steam fraction, geothermal temperatures, and MER (mass extraction ratio). Sensitivity analysis is given to the parameters of exergy efficiency, net output power, a mass flow rate of natural gas, a mass flow rate of hydrogen, a mass flow rate of pure water, and the coefficient of performance of the absorption refrigeration system. Thermal efficiency is 27.2%. Exergy efficiency is 35.89%. The net power output from turbine 1 is 997.8 kW, from turbine 2 is 343.2 kW. The hydrogen mass flow rate is 0.0008 kg/s. The natural gas mass flow rate that can be used is 1.252 kg/s. The coefficient of performance (COP) of the absorption refrigeration system (ARS) is 0.8876, and the mass flow rate of pure water of the water desalination system is 0.3914 kg/s.
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