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Open AccessFeature PaperArticle

Energy Analysis at a Near Zero Energy Building. A Case-Study in Spain

Department of Energy and Fluid Mechanics, School of Engineering (EII), University of Valladolid (UVa), 47011 Valladolid, Spain
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Energies 2018, 11(4), 857; https://doi.org/10.3390/en11040857
Received: 27 February 2018 / Revised: 27 March 2018 / Accepted: 29 March 2018 / Published: 6 April 2018
(This article belongs to the Section Sustainable Energy)
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. View Full-Text
Keywords: energy simulation; energy analysis; near Zero Energy Buildings; energy consumption; renewable energy energy simulation; energy analysis; near Zero Energy Buildings; energy consumption; renewable energy
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Rey-Hernández, J.M.; Velasco-Gómez, E.; San José-Alonso, J.F.; Tejero-González, A.; Rey-Martínez, F.J. Energy Analysis at a Near Zero Energy Building. A Case-Study in Spain. Energies 2018, 11, 857.

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