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      ENERGY RETROFIT OF HISTORICAL BUILDINGS: AN ITALIAN CASE STUDY

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          Abstract

          The most suitable intervention for energy rehabilitation of historical buildings has to reach both the goal of the optimization of the energy saving and the preservation of the original characteristics of the building. The present work is related to refurbishment and energy rehabilitation of an historical building dating back to 15th century. The building complex under study is an ancient residential courtyard building located in Northern Italy near Verona. The strategies have been focused on the building envelope and energy supply systems respecting both the regulatory constraints imposed by preservation of historical buildings and, where possible, the current national legislation about the building energy efficiency. This result was achieved only through the identification of best solutions based on mutual compatibility and optimization of the performance of the building envelope and the HVAC systems.

          In the design phase, the thermal performance of the building for both winter and summer periods have been evaluated by dynamic computer simulations. It has been shown that adequate interventions focused on the building envelope and HVAC systems reduces the energy consumption in a significant way. Further, it has been shown through economical analysis that extra-costs for energy retrofit measures paid back quickly during the life span of the building. Historical buildings are characterized by unique and specific characters that could be preserved, also upgrading them to modern requirements. This study demonstrates how it is possible to intervene effectively (and correctly by the historical and architectural point of view) on the energy performance of ancient buildings. By applying innovative techniques and technologies, in fact, it is possible to achieve high energy efficiency levels, without affecting the original architectural appearance and value. The methodology presented can be an interesting case study for all those building interventions where energy, cultural and historical issues intersect.

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          Most cited references18

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          EnergyPlus: creating a new-generation building energy simulation program

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            European residential buildings and empirical assessment of the Hellenic building stock, energy consumption, emissions and potential energy savings

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              The influence of the external walls thermal inertia on the energy performance of well insulated buildings

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                Author and article information

                Journal
                jgrb
                Journal of Green Building
                College Publishing
                1552-6100
                1943-4618
                1943-4618
                Fall 2012
                : 7
                : 4
                : 144-165
                Author notes

                1Dept. Building Environment Science and Technology (BEST), Politecnico di Milano, Via Bonardi 3, 20133 Milano (Italy). Corresponding author: Tel: +39 0223999489; fax: +39 0223999491; E-mail: rajendra.adhikari@ 123456polimi.it

                Article
                jgb.7.4.144
                10.3992/jgb.7.4.144
                b7bc909a-f6ff-47c9-aadd-655ab12c0962
                ©2012 by College Publishing. All rights reserved.

                Volumes 1-7 of JOGB are open access and do not require permission for use, though proper citation should be given. To view the licenses, visit https://creativecommons.org/licenses/by-nc/4.0/

                History
                Page count
                Pages: 22
                Categories
                RESEARCH ARTICLES

                Urban design & Planning,Civil engineering,Environmental management, Policy & Planning,Architecture,Environmental engineering
                energy retrofit,economical evaluations,energy performance,historical buildings,case study building

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