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Hur skulle ett utbyte av Mumbais CNG bussar, till Siemens ELFA system, påverka koldioxidutsläppen?
KTH, School of Industrial Engineering and Management (ITM), Production Engineering.
KTH, School of Industrial Engineering and Management (ITM), Production Engineering.
KTH, School of Industrial Engineering and Management (ITM), Production Engineering.
2013 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [sv]

Det finns många möjliga sätt på vilka koldioxidutsläppen från fossila bränslen kan reduceras. I den här rapporten undersöks ett av de möjliga alternativen. Idag finns 284 bussar drivna av naturgas i Mumbai, naturgasen i sin tur ger upphov till koldioxidutsläpp. I denna rapport undersöks om ett byte av dessa naturgasbussar (CNG-bussar) till 285 stycken hybridbussar, skulle kunna reducera koldioxidutsläppen från denna sektor. De 285 nya hybridbussar som skulle behövas för att täcka upp Mumbais transportbehov antas drivna av Siemens ELFA system med regenerativ bromsning. Detta system ska enligt Siemens kunna ge en bränsleförbrukningsreducering på 40 %. Denna reduceringsuppskattning visade sig dock på grund av olika omständigheter vara för optimistisk. I denna rapport fann man att den totala reduceringen skulle kunna bli minst 9,7 % på grund av bytet. En reducering innebärande en besparing på 7172 ton koldioxid per år.

Abstract [en]

There are a number of ways to reduce the carbon dioxide emissions caused by fossil fuel combustion. This paper aims to analyze one of these possible alternatives. Today there are 284 CNG buses operating in the Mumbai area, which cause carbon dioxide emissions. The purpose of this paper is to analyze the possibility of exchanging these 284 CNG buses for 285 CNG hybrids, and if this would result in a reduction in carbon dioxide emissions in the transportation sector. The 285 new hybrid buses that are supposed to address the public transportation needs in Mumbai are assumed to be propelled by a Siemens ELFA traction module, with regenerative braking, which according to Siemens would result in a reduction in carbon dioxide emissions with up to 40 %. This estimation was found to be a bit too optimistic and investigation showed that 10% was a more plausible reduction. This paper found the total reduction to be approximately 9.7 %. Which result in a yearly carbon dioxide saving of 7172 metric tons.

Place, publisher, year, edition, pages
2013. , 37 p.
Series
Examensarbete inom industriell produktion, grundnivå, 225
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-129048OAI: oai:DiVA.org:kth-129048DiVA: diva2:649458
Examiners
Available from: 2013-09-20 Created: 2013-09-18 Last updated: 2013-09-20Bibliographically approved

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