Cost-optimal analysis and technical comparison between standard and high efficient mono-residential buildings in a warm climate. (1st April 2015)

• Record Type: Journal Article
• Authors: Baglivo, Cristina; Congedo, Paolo Maria; D'Agostino, Delia; Zacà, Ilaria
• Is Part Of: Energy. Volume 83(2015)
• Page Start: 560
• Page End: 575
• Publication Date: 2015-04-01
• Subjects: Reference building -- nZEB -- EPBD -- Cost-optimal analysis -- Warm climate -- Energy efficiency; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Energy consumption -- Periodicals; 333.7905
• DOI: 10.1016/j.energy.2015.02.062
• Languages: English
• ISSNs: 0360-5442

Abstract

Abstract: The recast of EU (European Union) Directive on EPBD (Energy Performance of Buildings) requires nZEBs (nearly zero energy buildings) as the building target from 2018 onwards and the establishment of cost-optimal levels of minimum energy performance requirements in buildings. This paper presents the results of the application of a methodology to identify cost-optimal levels in new residential buildings located in a warm climate. Mono-residential buildings have been considered as virtual reference buildings in this study. Different energy efficiency measures have been selected for the envelope and the systems. A combination of technical variants has been then applied to the reference case in order to obtain several configurations to be compared in terms of primary energy consumption and global costs. The cost-optimal solution is identified assessing technical features and energy performance. Standard and high efficiency buildings are analysed to show how the selected configuration allows a decrease of primary energy consumption and CO2 emissions at the lowest cost. Results are useful for comparison with other climates and building types. They also show the feasibility of the methodology to comply with EU requirements and to support the choice of economically efficient nZEBs solutions at the design stage. Highlights: A methodology is applied to obtain cost-optimal levels in mono-residential reference buildings. A conventional baseline reference building located in a warm climate is described. Energy performance is assessed for different packages of energy efficiency technical measures. Global costs are evaluated to identify the cost-optimal solution. A comparison between standard and high performance buildings is given at the design level.