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1. Nominal efficiency
Efficiency was first considered in industrial circles in the 90s, after a WBCSD(*) commission had taken it on board. The emergence of this concept on the economic scene corresponds to the recognition of a new dimension of technology, since until now it was only a question of yield, i.e. the ratio between the resources mobilized and those incorporated in an object. But this calculation was made all other things being equal. This was without taking into account environmental effects, and without any idea of measurement.
Efficiency will lead us to consider the search for yield no longer as an optimization of resources, but rather as the quest for a compromise between the benefits derived from a product and the disadvantages resulting from its production (waste, social costs, etc.).
The efficiency of an object...
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Nominal efficiency
Efficiency over time
Bibliography
In Engineering Techniques
Websites
(Non-exhaustive list)
The generic concept
• WBCSD (World Business Council for Sustainable Development) provides a wealth of documentation http://www.wbcsd.org/
• CASBEE – Japanese approach to environmental eco-efficiency http://www.architects.org/
...Standards
- Fascicule explicitant les engagements que tout responsable économique doit envisager pour contribuer au développement durable. - AFNOR FD SD 21000 -
- Fascicule sur la déclinaison des principes du développement durable pour la construction. - ISO TC 59 SC 17 -
- Analyse du cycle de vie (AFNOR). - ISO 14040 -
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