Study of the Influence of Solar Shading Devices in the Solar Inputs in Buildings

Abstract

AbstractHousing stock, responsible for 36% of all EU CO2 emissions, can become one of the main assets for the decarbonisation of the energy system. Currently, much of the energy is destined to air conditioning, so that the use of renewable resources such as solar radiation can become a great ally to reduce CO2 emissions in Europe. In this chapter, the solar control systems for reducing the heating and air conditioning of the buildings are analysed. A comparative study is carried out between dynamic solar shadow devices and fixed solar systems, analysing the energy contributions in summer and winter depending on their properties.Firstly, the influence on the energy contributions in summer and winter of the fixed protection systems will be analysed, evaluating the variability based on the properties of the glass and the length of the awning. Lastly, the efficiency of dynamic solar systems will be evaluated in order to maximise energy contributions in winter and minimise them in summer, in order to improve thermal comfort and reduce energy consumption.Dynamic solar control devices have more versatility than fixed systems. For example, for an awning with a length of 1.5 metres, the difference using this type of protection as a dynamic system can mean a reduction in the contribution of solar energy of 29% compared to a fixed system.KeywordsEnergy consumption in buildingsHVACindoor thermal comfortsolar control shading devicessolar inputs in buildings