Application of Renewable Energies in a University Building with Complex Topology

Abstract

AbstractIn this numerical study, an application of renewable energies in a university building with complex topology is developed. Solar radiation, namely passive and active solutions, is used as a renewable energy source.The numerical study for a university building was carried out using a software that simulates the building thermal behavior with complex topology in transient conditions. The software evaluates the human thermal comfort level that the occupants are subjected, HVAC (Heating, Ventilating, and Air Conditioning) energy consumption, indoor and outdoor thermal variables, and other parameters. In the numerical study, made in summer and winter conditions, a university building with complex topology, with 319 compartments, is used. The university building is located in a Mediterranean environment. The solar passive and active strategies are used. Warm internal greenhouses, in winter conditions, and cold underground spaces, in summer conditions, using mixing ventilation, are used. In both situations, the building passive strategies, as internal and external shading devices, are considered. The thermal comfort level, using the Predicted Mean Vote (PMV) index, is evaluated.The results show that in winter conditions the renewable resource improves the thermal comfort conditions to the occupants. In summer conditions the thermal comfort level is near the acceptable level. The indoor air quality, in all ventilated spaces, is guaranteed.KeywordsBuildingRenewable energiesSolar radiationThermal comfortIndoor air quality