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Open AccessFeature PaperArticle

Monitoring Data Study of the Performance of Renewable Energy Systems in a Near Zero Energy Building in Spain: A Case Study

1
Department of Energy and Fluid mechanics, School of Engineering (EII), University of Valladolid (UVa), 47011 Valladolid, Spain
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Institute of the Advanced Technologies of the Production (ITAP), University of Valladolid, 47002 Valladolid, Spain
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Higher Polytechnic College, European University Miguel de Cervantes (UEMC), 47012 Valladolid, Spain
*
Author to whom correspondence should be addressed.
Energies 2018, 11(11), 2979; https://doi.org/10.3390/en11112979
Received: 12 September 2018 / Revised: 25 October 2018 / Accepted: 26 October 2018 / Published: 1 November 2018
(This article belongs to the Special Issue Building Renewable Energy and Thermal Energy Storage System 2018)
The building sector is responsible for a substantial part of the energy consumption and corresponding CO2 emissions. The European Union has consequently developed various directives, among which the updated Energy Performance of Buildings Directive 2018/844/EU stands out, aiming at minimizing the energy demand in buildings, improving the energy efficiency of their facilities and integrating renewable energies. The objective of the present study was to develop an analysis on the energy performance, related CO2 emissions and operating costs of the renewable energy technologies implemented within a multipurpose near Zero Energy Building (nZEB). The target building is an existing nZEB called LUCIA, located in Valladolid (Spain). Monitoring data provides the required information on the actual needs for electricity, cooling and heating. It is equipped with solar energy photovoltaic systems, a biomass boiler and a geothermal Earth to Air Heat Exchanger (EAHX) intended for meeting the ventilation thermal loads. All systems studied show favourable performances, but depend significantly on the particular characteristics of the building, the control algorithm and the climate of the location. Hence, design of these strategies for new nZEBs must consider all these factors. The combined use of the PhotoVoltaic PV System, the biomass and the EAHX reduces the CO2 emissions up to 123 to 170 tons/year in comparison with other fuels, entailing economic savings from the system operation of up to 43,000–50,000 €/year. View Full-Text
Keywords: CO2 impact; energy analysis; near Zero Energy Buildings; energy consumption; economical costs; renewable energy CO2 impact; energy analysis; near Zero Energy Buildings; energy consumption; economical costs; renewable energy
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Rey-Hernández, J.M.; Velasco-Gómez, E.; San José-Alonso, J.F.; Tejero-González, A.; González-González, S.L.; Rey-Martínez, F.J. Monitoring Data Study of the Performance of Renewable Energy Systems in a Near Zero Energy Building in Spain: A Case Study. Energies 2018, 11, 2979.

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