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1. Uncertainties in energy consumption estimates
To illustrate the complexity of energy assessments, we'll start by looking at calculations of the energy consumption involved in the use of an object or good, highlighting the associated uncertainties. The same type of uncertainty exists when estimating grey energy, and we need to be aware of it to put the value of the results obtained into perspective.
So, when we evaluate the energy consumed by a given object, a car or a refrigerator, for example, we generally consider the average value measured on a sample of consumers or estimated on the basis of models. Only very rarely is the dispersion around this average value given. Yet this dispersion is also an important piece of data.
if a vehicle's average fuel consumption is 7 L/100 km, it's important to know whether 90% of measured fuel consumption...
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Uncertainties in energy consumption estimates
What is grey energy?
Bibliography
- (1) - POUROUCHOTTAMIN (C.L.E.M.P.) - Nouvelles représentations des consommations d'énergie. - Les cahiers du CLIP, n° 22 (2013).
- (2) - - http://labo-energetic.eu/fr/a_telecharger/Concept_energie_grise.pdf...
Websites
French Environment and Energy Management Agency http://www.ademe.fr
International Energy Agency http://www.iea.org
Areva http://www.areva.com
BP statistical review...
Further information
In the BE "Génie énergétique" bases of Techniques de l'ingénieur.
Events
European Conference on Sustainable Renovation of Buildings http://www.eurima.org
Software tools
Gabi software developed in Germany http://www.gabi-software.com
Simapro software http://www.evea-conseil.com
initially developed in the Netherlands by Pré Consultant http://www.pre.nl
...Standards and norms
- Environmental management – Lifecycle analysis – Principles and framework - NF EN ISO 14040 - 10-06
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