RT info:eu-repo/semantics/article T1 Energy analysis at a near zero energy building. A case-study in Spain A1 Rey Hernández, Javier María A1 Velasco Gómez, Eloy A1 Tejero González, Ana A1 Rey Martínez, Francisco Javier K1 Energy simulation K1 Energy analysis K1 Near Zero Energy Buildings K1 Energy consumption K1 Renewable energy K1 22 Física K1 33 Ciencias Tecnológicas AB This paper develops an energy analysis for an existing near Zero Energy (nZEB) and Zero Carbon Emissions building called LUCIA, located at the university campus in Valladolid (Spain). It is designed to supply electricity, cooling and heating needs through solar energy (Photovoltaic Systems, PV), biomass and an Earth–Air Heat Exchanger (EAHE), besides a Combined Heat Power (CHP). It is currently among the top three buildings with the highest LEED certification in the World. The building model is simulated with DesignBuilder version 5. The results of the energy analysis illustrate the heating, cooling and lighting consumptions expected, besides other demands and energy uses. From this data, we carried out an energy balance of the nZEB, which will help to plan preventive actions when compared to the actual energy consumptions, improving the management and control of both the building and its systems. The primary energy indicator obtained is 67 kWh/m2 a year, and 121 kWh/m2 a year for renewable energy generation, with respect to 55 kWh/m2 and 45 kWh/m2 set as reference in Europe. The Renewable Energy Ratio (RER) is 0.66. These indicators become a useful tool for the energy analysis of the nZEB according to the requirements in the European regulations and for its comparison with further nZEB. PB MDPI YR 2018 FD 2018 LK https://uvadoc.uva.es/handle/10324/57384 UL https://uvadoc.uva.es/handle/10324/57384 LA eng NO Energies, 2018, vol.11, n. 4, p. 857 NO Producción Científica DS UVaDOC RD 22-nov-2024