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      USE OF DISSIMILAR WALLING SYSTEMS ON RESIDENTIAL BUILDING ENVELOPES FOR IMPROVING THEIR THERMAL PERFORMANCE

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          Abstract

          This paper summarises the results of a combined numerical, statistical and experimental study concerned with the use of dissimilar walling systems on the external parts of a given building envelope. The rational behind this “hybrid wall” concept, as opposed to conventional approaches where identical walls are used in a building envelope, is to achieve a more effective distribution of thermal mass across the envelope and, hence, improve the overall thermal performance of the building. The effectiveness of the “hybrid wall” concept was investigated using a series of hypothetical building modules of common Australian residential constructions, namely Light Weight (LW), Brick Veneer (BV), Reverse Brick Veneer (RBV) and Cavity Brick (CB). These designs were examined numerically using a commercial energy rating tool known as “AccuRate”, statistically using JMP software and experimentally using a novel benchscale setup developed as part of this study. The performance of each design was evaluated by its energy consumption. The numerical predictions and experimental data highlighted that the east and west walls have the most impact on the energy consumption under Australian climatic conditions. It was found that considerable reductions in the energy consumption could be achieved in cases where the hybrid wall concept was implemented through the use of high thermal mass insulated walls on the east and west sides of the building envelope.

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          Most cited references4

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          Calculation of the thermal behaviour of multi-zone buildings

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            Technical Manual, Design for Lifestyle and the Future

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              Effect of Thermal Mass on the Thermal Performance of Various Australian Residential Constructions Systems

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                Author and article information

                Journal
                jgrb
                Journal of Green Building
                College Publishing
                1552-6100
                1943-4618
                1943-4618
                Spring 2009
                : 4
                : 2
                : 107-125
                Author notes

                1Priority Research Centre for Energy, Chemical Engineering, School of Engineering, Faculty of Engineering & Built Environment, The University of Newcastle, Callaghan, NSW 2308, Australia.

                2Corresponding Author. Phone: +61 (2) 49854-411 Email: behdad.moghtaderi@ 123456newcastle.edu.au .

                Article
                jgb.4.2.107
                10.3992/jgb.4.2.107
                8ff7ec17-43d9-4f8d-8808-251049e7172b
                ©2009 by College Publishing. All rights reserved.
                History
                Page count
                Pages: 19
                Categories
                RESEARCH ARTICLES

                Urban design & Planning,Civil engineering,Environmental management, Policy & Planning,Architecture,Environmental engineering
                sustainable building,energy efficiency,thermal mass,hybrid walling systems

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