miun.sePublikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
How do we know the energy use when producing biomaterials or biofuels? [Eco-Tech'12]
Chalmers University of Technology. (Environmental Systems Analysis)
Chalmers University of Technology. (Environmental Systems Analysis)
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för teknik och hållbar utveckling. (Ecotechnology)
Chalmers University of Technology. (Chemical Environmental Science)
Visa övriga samt affilieringar
2012 (Engelska)Ingår i: Proceedings of ECO-TECH 2012, 26-28 November, Kalmar, Sweden., 2012Konferensbidrag, Poster (med eller utan abstract) (Övrigt vetenskapligt)
Abstract [en]

How much fossil energy that is used in the production of biomaterials or biofuels (e.g. fuel used in harvesting) is a parameter of obvious interest when optimizing the production systems. To use more fossil fuels in the production of a biofuel than what will be available as the biofuel product is obviously a bad idea. With increasing interest in biomaterials and biofuels, a shift from a sole focus on fossil energy will be necessary. Optimized use of energy over the whole life cycle is one important parameter to ensure sustainability. However, to report and interpret values on life cycle energy use is not as straight forward as what might immediately be perceived. The impact category ‘energy use’ is frequently used but is generally not applied in a transparent and consistent way between different studies. Considering the increased focus on biofuels, it is important to inform companies and policy-makers about the energy use of biofuels in relevant and transparent ways with well-defined indicators. The present situation in how energy use indicators are applied was studied in a set of LCA studies of biofuels. It was found that the choice of indicator was seldom motivated or discussed in the examined reports and articles, and five inherently different energy use indicators were observed: (1) fossil energy, (2) secondary energy, (3) cumulative energy demand (primary energy), (4) net energy balance, and (5) total extracted energy. As a test, we applied these five energy use indicators to the same cradle-to-gate production system and they give considerably different output numbers of energy use. This in itself is not unexpected, but indicates the importance of clearly identifying, describing and motivating the choice of energy use indicator. Direct comparisons between different energy use results could lead to misinformed policy decisions.

Ort, förlag, år, upplaga, sidor
2012.
Nyckelord [en]
fossil energy, secondary energy, cumulative energy demand, primary energy, net energy balance, total extracted energy
Nationell ämneskategori
Naturresursteknik Miljövetenskap
Identifikatorer
URN: urn:nbn:se:miun:diva-17308OAI: oai:DiVA.org:miun-17308DiVA, id: diva2:564563
Konferens
Linnaeus ECO-TECH 2012, 26-28 November, Kalmar, Sweden.
Tillgänglig från: 2012-11-02 Skapad: 2012-11-02 Senast uppdaterad: 2012-11-02Bibliografiskt granskad

Open Access i DiVA

fulltext(16 kB)268 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 16 kBChecksumma SHA-512
8aa01f806d57fd5ee194262c05add3340da0e31f3e3c7c637a1a277d8943674e5cd8908fa4308047ff8e34f14aa07a4cdb152ed8eb2df6fd7feec5f96af18d43
Typ fulltextMimetyp application/pdf

Personposter BETA

Fröling, Morgan

Sök vidare i DiVA

Av författaren/redaktören
Fröling, Morgan
Av organisationen
Institutionen för teknik och hållbar utveckling
NaturresursteknikMiljövetenskap

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 268 nedladdningar
Antalet nedladdningar är summan av nedladdningar för alla fulltexter. Det kan inkludera t.ex tidigare versioner som nu inte längre är tillgängliga.

urn-nbn

Altmetricpoäng

urn-nbn
Totalt: 1183 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf