۳E Analysis of a Solar and Geothermal-based Multigeneration System using Thermoelectric Generator

Using renewable energy is an efficient method for addressing the drawbacks of utilizing fossil fuels. The study focuses on a multigeneration system that integrates PTC solar collector and geothermal energy, along with two ORC cycles, a single-effect absorption refrigeration cycle, a PEM electrolyzer, and a dryer. A TEG unit is utilized in the ORC cycles to increase power production. The system is analyzed from energy, exergy, and exergoeconomic perspectives using EES software. Parametric analysis is conducted to assess the impact of crucial parameters on the system's performance. The examination of overall results reveals that the energetic and exergetic efficiencies of the multigeneration system are ۴۱.۵۸ and ۲۵.۶۱%, respectively. The power generated by ORC۱ turbine and ORC۲ turbine are ۴۶۱.۹kW and ۲۲۷.۶kW, respectively. Introducing TEG units in place of condensers in the ORC cycles results in increased power production to ۱۳۸.۲kW and ۳۲۸.۲kW for ORC۱ and ORC۲ cycles. The energetic and exergetic COPs of the system are ۰.۸۱۰۳ and ۰.۳۴۸۴, respectively. Additionally, the multigeneration system is capable of producing ۴۹۳.۱ kg/day of hydrogen. Lastly, six different working fluids in the ORC cycle were investigated. It is demonstrated that among the ۶ working fluids, n-pentane exhibited the best performance.

کلیدواژه ها:

Coefficient of performance ، Exergoeconomic Analysis ، hydrogen ، Solar energy ، Thermodynamic analysis