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    An innovative transient simulation of a solar energy system with a thermochemical hydrogen production cycle for zero-energy buildings
    (Elsevier Ltd, 2024) Mohammadi, Z.; Ahmadi, P.; Ashjaee, M.
    This research investigates the incorporation of solar power systems into buildings to meet the energy needs of near-zero-energy buildings. The study focuses on a complex buildings in Shiraz City, Iran. The primary objective of this case study is to integrate an innovative method of hydrogen production known as thermochemical hydrogen production methods to fulfill the building's energy demands. Solar energy is utilized to generate heat by parabolic trough collectors, which is the sole energy source required for the V–Cl thermochemical cycle. Consequently, hydrogen is produced and stored during the day for use at night when there is no solar radiation. To address this, a novel component has been developed for the vanadium chlorine cycle (V–Cl) within the TRNSYS software. The energy system was simulated using the TRNSYS software, a powerful transient simulation tool. Despite the numerous advantages offered by TRNSYS's energy system simulation, it lacks optimization capabilities. The use of a neural network-genetic algorithm optimization approach allows for the calculation of an optimized area for collectors and the power output of fuel cells for the building complex. The optimum configuration results in minimum installation cost, lowest CO2 emissions, and the highest power supply renewable (PSR). The results reveal that the installation of collectors with a surface area of 70 m2 and the utilization of fuel cells with a power output of 345 kW lead to a total carbon dioxide (CO2) generation of 10.31 tons per year, a PSR of 1.21, and a cost of $4.915 per hour. © 2024 Hydrogen Energy Publications LLC