Projeto e implantação de sistema de arrefecimento para melhoria da eficiência energética de um sistema de geração fotovoltaica com supervisão online

Abstract

In this work, a structure is designed and implemented in a pilot plant to support analyzes of technical feasibility to improve energy efficiency in solar photovoltaic plants. A complete cooling apparatus is designed and installed in a plant, in a pilot plant above the ground, of 5.85kWp. The reuse water used comes from the sewage treatment system of the Aparecida de Goiânia campus of the Federal Institute of Goiás (IFG). The structures developed include: a system for controlling the volume and distribution of water on the surface of the panels; data acquisition system, thermal and electrical of the panels; control system, monitoring, in real time, of the collected quantities, using an industrial network, based on Modbus RTU and Modbus TCP / IP protocol. Preliminary analyzes pointed to the technical viability of the system, with an average net gain of 7.93% of the power generated in the solar panels, as well as a positive energy balance between the energy gain of the cooling system in relation to the energy spent on repressing the reuse water. Economic studies may be developed, based on the costs of the system and the estimate of improvement in energy efficiency.