The Influence of Measured/simulated Weather Data on Evaluating the Energy Need in Buildings

In evaluating the thermal energy demand in buildings by using TRNSYS software, weather data are necessary to optimise the implementation location of a new building. The weather data are obtained from in-field measurements, using a weather station, or by using simulated data obtained using the dedicated software, e.g. METEONORM.The paper aims at investigating the influence of measured/simulated meteorological data on an accurate evaluation of the thermal energy demand in buildings. Further on, the paper discusses a case study for a building in Transilvania University of Brasov, located in a mountain, urban area.