RT journal article
T1 Energy, emissions and economic impact of the new nZEB regulatory framework on residential buildings renovation: Case study in southern Spain
A1 Cerezo Narváez, Alberto
A1 Piñero Vilela, José María
A1 Rodríguez Jara, Enrique Ángel
A1 Otero Mateo, Manuel
A1 Pastor Fernández, Andrés
A1 Ballesteros Pérez, Pablo
A2 Ingeniería Mecánica y Diseño Industrial
A2 Máquinas y Motores Térmicos
K1 energy efficiency
K1 energy performance
K1 Nearly zero energy building
K1 Photovoltaic energy
K1 Solar-thermal energy
K1 Spanish real estate bubble
K1 Technical building code
K1 Thermal envelope
K1 Thermal insulation
AB Spanish residential buildings built in the decade of the housing bubble (2000–2009) had to comply with the Basic Buildings Standard on thermal conditions in buildings. At the end of this period, the Basic Energy Savings Document of the Technical Building Code published in the Royal Decree 314/2006, transposing European Directive 2002/91/EC, entered into force. Recently, this regulatory framework has been updated by the Royal Decree 732/2019, which transposes European Directives 2010/31/EU, 2012/27/EU and 2018/844/EU. A case study is used to analyse the energy, emissions and economic impact of these regulatory changes on an attached house located in all municipalities of Andalusia (South of Spain). The thermal behaviour of this house is compared with the one adapted to the new regulations. The TRNSYS transient system simulation tool is used for the energy study. The house adaptation is carried out by partially modifying the envelope, including a solar-thermal contribution to domestic hot water supply, and photovoltaic energy production to reduce electricity consumption. The results showed that the European objectives are greatly exceeded. Energy savings range from 69% to 127%, carbon dioxide emissions decrease by 65%–118%, and energy bills are reduced from 71% to 125%. © 2021 The Authors
PB ELSEVIER
SN 2352-7102
YR 2021
FD 2021-10
LK http://hdl.handle.net/10498/25278
UL http://hdl.handle.net/10498/25278
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 08-nov-2026