An innovative urban energy system constituted by a photovoltaic/thermal hybrid solar installation: Design, simulation and monitoring

In this paper, the design of a PVT system to feed the domestic heat water requirements of multi-housing building is explained. The electricity production is also considered, in accordance with the Spanish regulation for self-consumption. The work developed began with the redesign of the hybrid solar plant, which individually supplies hot water to each dwelling and power for common consumption of the building, including a charging system for electric vehicles. Then, the PVT panel developed and manufactured by Endef Engineering and the complete thermal and electrical system are simulated in Trnsys. The monitoring of a real working installation is used in this paper to validate the proposed model. The presented case study is located in Zaragoza (Spain), in a residential apartment block, with an electrical installed power of 4.14 kWp and 20.5 kW of thermal capacity. The proposed model allows the calculation of the heat and electricity production and efficiency of the whole system with error lower than 6.5%.