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Comparative Environmental Analysis of Conventional and Hybrid Wheel Loader Technologies: A Life Cycle Perspective
KTH, School of Industrial Engineering and Management (ITM), Industrial Ecology.
KTH, School of Industrial Engineering and Management (ITM), Industrial Ecology.
2013 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Volvo Construction Equipment is investigating the potential of hybrid wheel loaders. To determine if this new hybrid wheel loader concept is preferable from an environmental point of view to the latest G- series Volvo wheel loader, a comparative life cycle assessment (LCA) has been performed  on the Volvo L150G wheel loader and a hybrid wheel loader concept.

The complete machines have been studied throughout their life cycle: raw material extraction, material processing, manufacturing processes, transportation, use phase, and end of life. In order to quantitatively assess the environmental impact of all lifecycle stages, five different environmental indicators have been used: global warming potential, abiotic resource depletion potential, acidification potential, eutrophication potential and ozone depletion potential. In addition, a sensitivity analysis and two weighting methods are used to interpret the results.

The results show that a hybrid wheel loader concept reduces environmental impacts significantly compared to a conventional L150G, except the impact category ADP (element). Moreover, the use phase has by far the greatest impact within the life cycle, for most impact categories (90% of the total life cycle impact). A sensitivity analysis on use phase with impacts also showed the limitations for use in China.

Abstract [sv]

Volvo Construction Equipment undersöker potentialen av hybrid hjullastare. För att avgöra om ett hybrid hjullastare koncept har fördelar ur miljösynpunkt jämfört med en G-serien Volvo hjullastare har en jämförande livscykelanalys (LCA) utförts på Volvo L150G hjullastare och ett hybrid hjullastarkoncept.

De kompletta maskinerna har studerats under hela deras livscykel: utvinning av råmaterial, materialbearbetning, tillverkningsprocesser, transport, användningsfas och slutet av skrotningsfasen. För att kvantitativt kunna bedöma miljökonsekvenserna av alla livscykelnskeden har fem olika miljöindikatorer använts: global uppvärmningspotential, abiotiska resursutarmningspotential, försurningspotential, övergödningspotential och ozonnedbrytingspotential. En känslighetsanalys och två viktningsmetoder har tillämpats för att tolka resultaten.

Resultaten visar att ett hybrid hjullastarkoncept minskar miljöpåverkan avsevärt jämfört med en konventionell L150G, förutom påverkan från kategorin resursutarmningspotential. Dessutom har användningsprocessen i särklass störst påverkan inom livscykeln för de flesta effekt kategorier (90% av den totala livscykelpåverkan). En känslighetsanalys på användningsprocessen och dess effekter visade också på begränsningar för användning i Kina.

Place, publisher, year, edition, pages
2013. , 102 p.
Series
Trita-IM, ISSN 1402-7615 ; 2013:02
Keyword [en]
LCA, wheel loader, hybrid technology, lithium-ion battery
National Category
Other Engineering and Technologies
Identifiers
URN: urn:nbn:se:kth:diva-120004OAI: oai:DiVA.org:kth-120004DiVA: diva2:613205
External cooperation
Volvo Group Trucks Technology
Subject / course
Industrial Ecology
Educational program
Master of Science - Sustainable Technology
Uppsok
Technology
Supervisors
Examiners
Available from: 2013-03-26 Created: 2013-03-26 Last updated: 2013-03-26Bibliographically approved

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