Operating Parameters of a Solar Thermal System for DHW Heating

The paper presents the results of measuring the operating parameters of a solar thermal system. The solar thermal system is used in the laboratory for heating domestic hot water (DHW). A solar thermal panel is placed at the location 43°31'21'' N i 16°27'01'' E, facing South at the fixed angle of 30°, in relation to the horizontal plane. The measurement of operating parameters was carried out over two specific periods of time (in summer and winter), in order to analyse the performance of solar system in different operating conditions. Based on the results measured, the efficiency and coverage ratios of the solar thermal system are estimated. Finally, the results were compared with the data available in the literature.