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Sustainability 2015, 7(8), 10445-10460; doi:10.3390/su70810445

Energy Retrofit Strategies for Residential Building Envelopes: An Italian Case Study of an Early-50s Building

Department of Engineering, University of Roma TRE, via Vito Volterra 62, Rome 00146, Italy
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Academic Editors: Francesco Asdrubali and Pietro Buzzini
Received: 13 June 2015 / Revised: 28 July 2015 / Accepted: 30 July 2015 / Published: 5 August 2015
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Abstract

During the last few years, the issues of energy efficiency and energy saving have dominated the buildings research field. New constructions are based on efficient design and, because of this, the real challenge is to retrofit existing buildings. Italian standards impose thermal transmittance limits for opaque and transparent surfaces, according to the climatic area. In order to understand buildings’ energy behavior, an accurate analysis, carried out by employing advanced calculation codes and instrumental diagnosis—provided by the use of heat flow meter, surface temperature probes and thermal imaging camera—is needed. In this paper, a structure built in the 50 s has been analyzed, by means of a measurement campaign, to investigate the building’s characteristics and its vulnerability. Finally, some retrofit hypotheses have been evaluated by means of a well-known dynamic code. All investments have to be analyzed under a financial point of view, considering materials and installation costs. For this reason, the payback time has been calculated in order to understand how quickly the energy upgrading can be repaid. View Full-Text
Keywords: buildings energy analysis; existing building retrofit; dynamic building simulation buildings energy analysis; existing building retrofit; dynamic building simulation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Evangelisti, L.; Guattari, C.; Gori, P. Energy Retrofit Strategies for Residential Building Envelopes: An Italian Case Study of an Early-50s Building. Sustainability 2015, 7, 10445-10460.

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