Abstract
Abstract To use energy systems based on renewable sources, it is very important to consider backup and hybrid sources because renewable energies are not available all the time; therefore, in this system, a geothermal pump is used to preheat the fluid, then the heated fluid is sent to the vacuum tube collector to reach a higher temperature by absorbing solar-thermal energy, and after absorbing solar energy, it goes to the evaporator to produce superheated steam and finally the superheated fluid moves to the steam turbine to produce energy. After the simulation, thermodynamic analysis along with economic analysis has been done. In the base state, the energy efficiency and exergy of cogeneration were 0.566 and 0.156, respectively; the energy efficiency and electrical exergy were better than 0.057 and 0.065; and the overall output and immutable work values were 50 and 671.1 kW, respectively.
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