Ensayos energéticos de un captador solar híbrido PVT para preparación de agua caliente sanitaria en la ciudad de Quito

Abstract

On November 2021, COP 26 concluded, where approximately 200 countries agreed to commit to implementing actions that guaranteed the reduction of greenhouse gases and put an end to the use of hydrocarbon derivatives, including Ecuador. Ecuador is privileged for its geographical location because it does not have defined seasons or radical changes in its climate, which allows it to have a relatively high and approximately uniform solar resource throughout the year compared to other countries. Though the fact that the solar resource in Ecuador is abundant, for example, for the year 2019 there was an average of 4.5 kW/m2 (Diego Vaca, 2019), GLP are still used to preparation sanitary hot water due to relatively low energy prices and subsidies of GLP. One of the most promising solar harnessing technologies developed in recent years is hybrid PVT technology capable of generating heat and electricity simultaneously. In this document, it was proposed to demonstrate the energy performance of a PVT hybrid solar panel installed in the city of Quito, specifically in the property of the SEK International University (UISEK). For this, 3 tests were carried out, one per day, on September 10, September 11 and September 13 in 2021, which variables such as flow rate, electric current, voltage, solar irradiation and temperatures were obtained from collector inlet, outlet and ambient temperature. The analysis of results is through the comparison of electrical and thermal efficiency obtained in the tests with respect to the efficiency curves provided by the manufacturer, where it is evident that in the city of Quito Norte there are favorable conditions to install systems with PVT panels.