Quantification of the reduction of the heat loss coefficient of the envelope of an energy-rehabilitated office building

• Irati Uriarte ^[1] ; Catalina Giraldo ^[1] ; Koldobika Martin ^[1] ; Pablo Eguia ^[1] ; Aitor Erkoreka ^[1]
  1. [1] ENEDI Research Group, Department of Thermal Engineering, UPV/EHU
• Localización: Disruption: 11º Congreso Europeo sobre Eficiencia Energética y Sostenibilidad en Arquitectura y Urbanismo – 4º Congreso Internacional de Construcción Avanzada: On line 1-2 Diciembre 2020 / Rufino Javier Hernández Minguillón (ed. lit.), 2020, ISBN 978-84-1319-308-3, págs. 47-58
• Idioma: inglés
• Títulos paralelos:
  • Cuantificación de la reducción del coeficiente de pérdida de calor de la envolvente de un edificio de oficinas energéticamente rehabilitado
• Enlaces
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• Resumen

  • Nowadays, a considerable performance gap is found when the design and the real energy consumption of buildings are compared. Three main sources are responsible of this gap: the users’ behavior, the buildings’ real energy systems’ performance and the buildings’ envelope performance. The envelope energy performance characterization of in-use buildings is commonly done using the Heat Loss Coefficient (HLC) as Key Performance Indicator (KPI). The HLC is the sum of the transmission heat loss coefficient through the building envelope (UA [kW/K]) and the infiltration and/or ventilation heat loss coefficient of the building Cv [kW/K]. Another important KPI is the solar aperture of the building envelope Sa [m2].