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Unresolved issues for the use of an energy numeraire in LCA
Karlstad University, Faculty of Technology and Science, Department of Energy, Environmental and Building Technology.
2007 (English)Conference paper (Refereed)
Abstract [en]

The methodological framework of LCA has a number of well-known problems and limitations. This has generated a lot of scientific efforts to eliminate or alleviate these. This paper can be seen as one contribution to these efforts, with a particular focus on energy issues in LCA. It has been concluded that a future comprehensive methodological framework for LCA must include a number of principles for comparison and aggregation of different energy forms or of their environmental impacts. In economics, the central concept of value is encapsulated in the term numeraire. This signifies the function of money as a common, universal currency, a measure of value or a unit of account. A numeraire can be used both for comparison and aggregation. A basic requisite for a numeraire is generality. It is here discussed whether it is possible to define an energy numeraire for use in LCA methods, in particular when the LCA is to be used for specific kinds of optimisation. I conclude that the exergy concept needs quite a lot of further theoretical development before it can be included in LCA methodology. Attempts to do so at the present stage would be premature and lead to disappointment and confusion

Place, publisher, year, edition, pages
Keyword [en]
LCA exergy optimisation
National Category
Energy Systems
Research subject
Environmental and Energy Systems
URN: urn:nbn:se:kau:diva-25230OAI: diva2:599006
SETAC Europe 14th LCA Case Studies Symposium, Göteborg 3-4 dec 2007
Available from: 2013-01-22 Created: 2013-01-22 Last updated: 2013-01-22

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Månsson, Bengt
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Department of Energy, Environmental and Building Technology
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