Assessment of embodied energy analysis methods for the Australian construction industry
Crawford, Robert and Treloar, Graham 2004, Assessment of embodied energy analysis methods for the Australian construction industry, in ANZAScA 2004 : Contexts of architecture : proceedings of the 38th Annual Conference of the Architectural Science Association ANZAScA and the International Building Performance Simulation Association, University of Tasmania, Launceston, Tas., pp. 415-421.
Australian and New Zealand Architectural Science Association / International Building Performance Simulation Association Joint Conference
University of Tasmania
Place of publication
Environmental assessment of buildings typically focuses on operational energy consumption in an attempt to minimise building energy consumption. Whilst the operation of Australian buildings accounts for around 20% of total energy consumption nationally, the energy embodied in these buildings represents up to 20 times their annual operational energy. Many previous studies, now shown to be incomplete in system boundary or unreliable, have provided much lower values for the embodied energy of buildings and their products. Many of these studies have used traditional embodied energy analysis methods, such as process analysis and input-output (1-0) analysis. More recently, hybrid embodied energy analysis methods have been developed, combining these two traditional methods. These hybrid methods need to be compared and validated, as these too have been considered to have several limitations. This paper aims to evaluate a recently developed hybrid method for the embodied energy analysis of the Australian construction industry, relative to traditional methods. Recent improvements to this hybrid method include the use of more recent 1-0 data and th.fl inclusion of capital energy data. These significant systemic changes mean that a previous assessment of the methods needs to be reviewed. It was found that the incompleteness associated with process analysis has increased from 49% to 87%. These findings suggest that current best-practice methods of embodied energy analysis are sufficiently accurate for most typical applications. This finding is strengthened by recent improvements to the 1-0 model.
Field of Research
120202 Building Science and Techniques
Socio Economic Objective
970112 Expanding Knowledge in Built Environment and Design
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