INTEGRATION OF PEM ELECTROLYZER AND FUEL CELL TO A SOLAR-GEOTHERMAL COMBINED SYSTEM FOR A ZERO-ENERGY BUILDING: AN EXERGYECONOMIC ANALYSIS
Abstract
In this study, a novel system which generates cooling effect, heat, electricity, hot water and distilled water simultaneously for a green building is analyzed which operates based on solar and geothermal heat pump, proton exchange membrane (PEM) electrolysis, proton exchange membrane (PEM) fuel cell, photovoltaics, desalination system along with pressure exchanger. The results demonstrats that energy and exergy efficiencies in cooling mode are 13.27% and 32.44% respectively, and in heating mode are also 17.25% and 42.4%, respectively. The largest exergy destruction occurs in the photovoltaics and organic Rankine cycle. It is also worth noting that turbine and vaporizer have the highest portion in exergy losses of organic Rankine cycle. The unit exergy cost of cooling, and hot water, and the cost of produced distilled water and 84.5 $/GJ, 64 $/GJ and 67.63 c$/m3, respectively. © 2022 Proceedings of WHEC 2022 - 23rd World Hydrogen Energy Conference: Bridging Continents by H2. All rights reserved.