Estimation of energy saving of commercial building by living wall and green facade in sub-tropical climate of Australia


Autoria(s): Hasan, M. Mahmudul; Karim, Azharul; Brown, Richard J.; Perkins, Melinda; Joyce, Daryl
Contribuinte(s)

Zhang, Huamin

Data(s)

28/05/2012

Resumo

This paper investigates energy saving potential of commercial building by living wall and green façade system using Envelope Thermal Transfer Value (ETTV) equation in Sub-tropical climate of Australia. Energy saving of four commercial buildings was quantified by applying living wall and green façade system to the west facing wall. A field experimental facility, from which temperature data of living wall system was collected, was used to quantify wall temperatures and heat gain under controlled conditions. The experimental parameters were accumulated with extensive data of existing commercial building to quantify energy saving. Based on temperature data of living wall system comprised of Australian native plants, equivalent temperature of living wall system has been computed. Then, shading coefficient of plants in green façade system has been included in mathematical equation and in graphical analysis. To minimize the air-conditioned load of commercial building, therefore to minimize the heat gain of commercial building, an analysis of building heat gain reduction by living wall and green façade system has been performed. Overall, cooling energy performance of commercial building before and after living wall and green façade system application has been examined. The quantified energy saving showed that only living wall system on opaque part of west facing wall can save 8-13 % of cooling energy consumption where as only green façade system on opaque part of west facing wall can save 9.5-18% cooling energy consumption of commercial building. Again, green façade system on fenestration system on west facing wall can save 28-35 % of cooling energy consumption where as combination of both living wall on opaque part of west facing wall and green façade on fenestration system on west facing wall can save 35-40% cooling energy consumption of commercial building in sub-tropical climate of Australia.

Formato

application/pdf

Identificador

http://eprints.qut.edu.au/48926/

Relação

http://eprints.qut.edu.au/48926/1/IGEC2012_Hasan.pdf

Hasan, M. Mahmudul, Karim, Azharul, Brown, Richard J., Perkins, Melinda, & Joyce, Daryl (2012) Estimation of energy saving of commercial building by living wall and green facade in sub-tropical climate of Australia. In Zhang, Huamin (Ed.) The 7th International Green Energy Conference & The 1st DNL Conference on clean energy, IGEC-DCCE, May 28-30, 2012, Dalian, China.

Direitos

Copyright 2012 The Authors

Copying of any portion or copying full of this paper is strictly prohibited.

Fonte

School of Chemistry, Physics & Mechanical Engineering; Science & Engineering Faculty

Palavras-Chave #090000 ENGINEERING #100000 TECHNOLOGY #120000 BUILT ENVIRONMENT AND DESIGN #Living wall #Green facade #Energy Saving #ETTV
Tipo

Conference Paper