Avaliação de um protótipo de coletor solar plano: estudo da temperatura com o uso de arduíno

Abstract

The growing demand for energy on the planet and the imminent shortage of non- renewable energies makes the use of solar energy and other renewable energies increasingly important. The sun is an energy source that has been increasingly exploited for heating fluids such as water and air. The technology that uses the solar collector for heating fluids is already well studied and disseminated in the scientific community, and many works have been developed in this area. In this work, a prototype of solar collector was built for use as an air heater in order to evaluate and seek the best configuration for temperature gain. Also, instrumentation was made for temperature monitoring in order to look for the best working conditions of the air heating collector. The main objective of the work was to perform a reliable instrumentation for a solar thermal collector (air heater). Were used tools for easy purchase, low cost and easy access hardware and software such as the DS18B2 sensor, Microsoft Excel, and Arduino. The outlet temperatures of the solar collector were analyzed, obtaining temperature peaks at the outlet with a value of up to 53.75° ºC, inside the collector box. With the results obtained and analyzed, it was possible to conclude that the best performance for the solar collector developed was the black and matte internal coating, with the glass plate as a cover and with the minimum functionality of the forced ventilation system controlling the flow of heated air, reaching a temperature gain of 95.6%.