Несуча здатність сонячних панелей, встановлених на похилих дахах будівель на території України

Abstract

The growing shortage of energy resources encourages the more active usage of energy-efficient technologies, in particular the use of solar panels to power low-rise buildings. The aim of the work is to establish the maximum allowable spans of solar panels taking into account climatic loads in different regions of Ukraine. According to the previously developed method, the bearing capacity of solar panels made of tempered glass with a thickness of 3 mm at a ratio of length to span of the panel equal to 2.0 was performed. The panels are installed at a height of up to 20 m from the ground level at angles of inclination to the horizon due to the design of the roofs. Characteristic values of snow cover weight, ice weight and wind pressure were adopted based on the results of the administrative-territorial zoning of Ukraine previously performed by the authors. Each administrative region corresponds to the characteristic values of the loads set in the safety margin with a security level of 0.95. This approach allowed to obtain the dependences of the maximum allowable span (smaller size) of the solar panel from its angle of inclination to the horizon for all 25 regions. In all cases, the condition of rigidity was decisive, and the allowable spans of panels in Ukraine were obtained equal to 0.61… 1.10 m. The largest allowable spans are in the southern regions, and the smallest span - in the snowy regions of Ukraine. Changing the thickness of the panel leads to a proportional change in its allowable span. The developed recommendations allow to choose the type and dimensions of solar panels for installation on the hip roofs of buildings in each of the administrative regions of Ukraine. The allowable span of panels, the shape of which is closer to square, can be increased by repeating the calculations according to the aforementioned method.