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B De Meester, J Dewulf, S Verbekea, A Janssensb, and H Van Langenhove (2009)

Exergetic life-cycle assessment (ELCA) for resource consumption evaluation in the built environment

Building and Environment 44 44:11-17.

Resource management becomes a key issue in the development of sustainable technology. This paper envisages a quantification of all energy and material needs for a family dwelling, both for the construction aspects (‘embodied energy and materials’) and usage aspects. To do so, an exergetic life-cycle assessment has been carried out that enables the quantification of all necessary natural energy and material resources simultaneously. The case study covered 65 optimized Belgian family dwelling types with low energy input (56 MJ/(m3 year)). The study shows that cumulative annual exergy demand is of the order of 65 GJexergy/year, with a limited dependency on the construction type: cavity wall, external insulation or wooden frame. For the cavity wall and external insulation building type, nonrenewable inputs are dominant for the construction with 85–86 exergy to be extracted out of the environment. For the wooden frame, non-renewable resource intake for construction remains 62 during the use phase are dominant in the overall resource intake with a 60 family dwellings less fossil resource dependant, the study learns that particularly reduction of heating requirements should be envisaged.
 
Created by aliciavd
Last modified 2009-06-05 08:01 PM
New book: Thanatia

Thanatia: The Destiny of the Earth's Mineral Resources

Thanatia: The Destiny of the Earth's Mineral Resources

A Thermodynamic Cradle-to-Cradle Assessment by (author): Antonio Valero Capilla (CIRCE — Universidad de Zaragoza, Spain), Alicia Valero Delgado (CIRCE — Universidad de Zaragoza, Spain)

Is Gaia becoming Thanatia, a resource exhausted planet? For how long can our high-tech society be sustained in the light of declining mineral ore grades, heavy dependence on un-recycled critical metals and accelerated material dispersion? These are all root causes of future disruptions that need to be addressed today.

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