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Life Cycle Assessment:Embedded and Maintenance Environmental Impacts of social interest housing Construction Systems

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Journal of Civil Engineering and Architecture 2021年第8期15卷 408-418页

作者： Marianne Di Domênico Thaísa Leal da Silva Lauro AndréRibeiro Andréa Quadrado Mussi Post-graduation Program of Architecture and Urbanism School of Engineering and Applied SciencesIMEDPasso Fundo 99070-220Brazil

Characterized by high consumption of natural resources and great generation of environmental impacts,civil construction becomes an important ally to the development of strategies for a more sustainable built *** this context,this article aims to evaluate construction systems of social interest housing and point out their participation in relation to total impacts,in addition to indicating the environmental impacts embedded in the construction materials present in these *** this end,a case study was selected to apply Life Cycle Assessment(LCA)methodology and assess impacts of the building materials used in a house of a social housing *** was applied to masonry,roof,coatings and floor *** scope adopted assesses impacts incorporated in construction materials,analyzing the stages of raw material extraction,materials production,transport to construction site,maintenance and materials *** life cycle inventory,Ecoinvent 3.6 database was used and environmental impacts were calculated using CML method with the aid of OpenLCA 1.9 *** general,results showed that the maintenance phase has the greatest environmental impact participation related to analyzed ***,it was possible to conclude that coatings and masonry systems were the ones that most added to total environmental impacts.

关键词： LCA environmental impacts social interest housing construction materials

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Energy Efficiency in social interest housing:NZEB Building Analysis for Southern Brazil

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Journal of Civil Engineering and Architecture 2021年第11期15卷 567-576页

作者： Marcos Vinícius de Lima Thaísa Leal da Silva Lauro AndréRibeiro Postgraduation Program of Architecture and Urbanism School of Engineering and Applied SciencesIMEDRua Senador Pinheiro304Passo Fundo/RS 99070-220Brazil

This article aims to investigate the potential for energy savings and impact on greenhouse gas(GHG)generation of social housing in southern *** and energy analysis of two architectural projects was carried out,one of them being a social interest housing unit and an optimized version of this unit characterized as Nearly Zero Energy Building(NZEB).At the end of the study,a cost analysis was carried out taking into account the building construction and local electricity generation through the installation of a photovoltaic(PV)*** the methods,software SketchUp Make and EnergyPlus was used for computer simulation,after which the PV power generation system for both buildings was dimensioned using the PvSol ***,the percentage of adaptive comfort of ASHRAE 55 was calculated,as well as financial analysis for the building construction and PV modules *** is concluded that it is possible to reduce energy consumption of this social interest housing by 52%and the heating consumption by 72%with passive strategies and envelope *** in an efficient building results in a 29%increase in building costs and promotes savings of 39.5 tCO_(2)over the life of the *** study demonstrates the importance of making NZEB buildings economically viable.

关键词： Energy efficiency social interest housing NZEBs simulation

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