The paper is focused on the evaluation of how windows design influences the energy performance of a nearly zero energy building, including the effects of the climate change. The case study is a single-story dwelling built in Benevento (South Italy, Mediterranean climate) with high performance. With five-years monitored meteorological data, the typical meteorological year is defined. This climatic condition represents the reference scenario for evaluating the performance with different types of windows and for the definition of future medium and long term climate projections, generated using the CCWorldWeatherGen tool. From these comparisons, the resilience of the nearly zero energy building is evaluated in terms of variation of heating and cooling energy demand and primary energy percentage difference (ΔPE). The results show that the selective, low-e clear double glazing may be able to better mitigate the summer overheating effect, with an increase of 23% in energy need for cooling at 2050.
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