Well-To-Wheel Analysis of Future Trains and Fuels Colofon
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Well-to-wheel analysis of future trains and fuels Colofon Client This report is prepared on request of the Province of Groningen, The Netherlands. Goal of study This study aims to provide an objective comparison of the sustainability performance of future powertrain and fuel technologies for passenger rail transport. The context for the study is taken to be the Northern Netherlands with a 2020 – 2025 timeline. Contact persons The following persons have contributed to the data and information of the report: Frank Bouma, project leader sustainable public transport, Province of Groningen Aljo Solle, project leader train, Arriva Research team. The following persons have contributed to the report: Age van der Mei is working as chief scientist and director at the Duinn office in the Netherlands Vincent van Assen is working as analyst/researcher at the Duinn office in the Netherlands Feel free to contact the authors for questions or feedback via [email protected] Status. Final version 1.0.7. Confidentiality. At this stage this presentation is confidential and can only be shared or reproduced with Duinn consent. The content of this presentation remains with the authors. Timeline. The research has been performed between November 2013 and April 2014. Disclaimer. The verbal additions and explanations given during the sessions and presentations are part of the results. The figures in this report are based upon verified data, documented sources or author estimates. © Duinn 2014. All rights reserved. Information from this report can be used if sourced and referred to as Duinn, Well-to-wheel analysis of future trains and fuels in the Dutch context, version 1.0, 2014. 1 WTW analysis of future trains and fuels report version 1.0 Duinn April 2014 Index Key definitions 3 Introduction 4 Method and scope 5 Main findings 12 Powertrain technology : tank-to-wheel analysis Diesel-electric and dual-fuel 14 Diesel-hybrid and gas-hybrid 15 Pure-electric 16 Catenary-diesel 17 Findings TTW energy use 18 Findings TTW greenhouse gas emissions 19 Fuels and energy carriers : well-to-tank analysis WTT efficiency of energy carriers 21 WTT GHG-emission of energy carriers 22 Diesel from crude oil 24 Biodiesel from rapeseed and waste oils 25 GTL from natural gas and BTL from wood 26 CNG 27 LNG 28 Biogas from manure, waste and maize 29 BioLNG from waste 30 Electricity from coal and natural gas and renewable electricity from wind 31 EU and NL electricity mix 32 Renewable energy share of energy carriers 33 Future trains and fuels : well-to-wheel results 35 Discussion of results 37 Appendices 1. Definitions 39 2. Train operation in the Northern Netherlands 40 3. Power curve Northern Netherlands driving cycle 41 4. Acceleration curves of the Stadler GTW EMU and DMU 42 5. Duinn publication on catenary-diesel trains January 2013 43 6. Well-to-wheel findings including natural gas from the Netherlands 44 2 WTW analysis of future trains and fuels report version 1.0 Duinn April 2014 Key definitions AC means alternating current energy efficiency means the ratio of output of pathway means a route, formed by a chain [Oxford performance, service, goods or energy, to input of energy Dictionary 2013] an "energy pathway" means in this study a biomass means the biodegradable fraction of products, [2012/27/EU] chain from source to end-use of an energy carrier waste and residues from biological origin from agriculture (including vegetal and animal substances), forestry and extraction includes all operations required to extract, capture powertrain means the system of energy storage device(s), related industries including fisheries and aquaculture, as or cultivate the primary energy source. In most cases, the energy converter(s) and transmission(s) that converts stored well as the biodegradable fraction of industrial and extracted or harvested energy carrier requires some form of energy to mechanical energy delivered at the wheels for municipal waste [2009/28/EC] treatment or conditioning before it can be transported propulsion of the vehicle [UN ECE R 101] conveniently, economically and safely [JEC 2007] catenary-diesel powertrain means in this study a powertrain pure-electric vehicle means a vehicle powered by an electric that, for the purpose of mechanical propulsion, draws energy gas-hybrid vehicle means a hybrid-electric vehicle powered powertrain only [UN ECE R 101] from both of the following: by a spark ignition engine in which the consumable fuel is a — an on-board diesel engine using a consumable fuel, gas which consists predominantly of methane. renewable energy share means the primary renewable — an off-board electricity supply (i.e. catenary system). energy use as proportion of the total primary energy use. greenhouse gases (GHG) means those gaseous constituents compression ignition means the process in which the fuel in of the atmosphere, both natural and anthropogenic, that spark ignition means a process in which the air-fuel mixture a diesel engine is ignited by compression in the cylinder absorb and emit radiation at specific wavelengths within the in an Otto engine is ignited by a spark plug [Volvo 2007] [Volvo 2007] spectrum of infrared radiation emitted by the Earth’s surface, the atmosphere and clouds. This property causes the tank-to-wheel means an accounting of the energy DC means direct current greenhouse effect. Water vapour (H2O), carbon dioxide (CO2), consumption and GHG emissions resulting from moving a nitrous oxide (N2O), methane (CH4) and ozone (O3) are the vehicle (through its drive-cycle) [GM 2002] diesel-hybrid vehicle means a hybrid-electric vehicle primary greenhouse gases in the Earth’s atmosphere [IPCC powered by a compression ignition engine. 2013]. well-to-tank means an accounting of energy consumption and GHG emissions over an entire fuel pathway, from primary distribution relates to the final stages required to distribute hybrid-electric vehicle means a hybrid vehicle that, for the resource to delivery of the fuel to the vehicle [GM 2002] the finished fuels from the point of import or production to purpose of mechanical propulsion, draws energy from both of the individual refuelling points (e.g. road transport) and the following on-vehicle sources of stored energy/power: well-to-wheel means an accounting of well-to-tank and tank- available to the vehicle tank (e.g. compression in the case of — a consumable fuel, to-wheel energy consumption and greenhouse gas emissions. natural gas) [JEC 2007] — an electrical energy/power storage device (e.g. battery, capacitor, flywheel/generator, etc.) [2007/46/EC] driving cycle means a sequence consisting of an engine start, an operating period (of the vehicle), an engine shut- off, and the time until the next engine start [582/2011/EC] 3 WTW analysis of future trains and fuels report version 1.0 Duinn April 2014 Introduction Rail transport in Europe uses 306 petajoule in energy of which ~80% is electricity and ~20% diesel. Most of the diesel is used in cargo and regional passenger trains. Can new powertrain and fuel technologies contribute to more energy efficient and sustainable regional rail passenger transport? EU rail transport decreases its energy use… …in the Netherlands a stabilisation after the crisis… …the Northern Netherlands use 250 – 300 terajoule diesel. • European railway passenger transport reached • Dutch railway passenger transport reached 16 000 • In the Northern Netherlands, Groningen and Fryslân, the 390 000 mln passenger kilometres in 2007 [EU27, mln passenger kilometres in 2007 and 18 000 mln railway passenger kilometres amount to approximately 316 EUROSTAT, 2014]. passenger kilometres in 2009 according to [Eurostat, mln kilometre [Arriva 2013]. • EU rail energy use amounted to 7 319 kton oil CBS, ministerie V&W, 2013]. • An estimated 8.5 mln train kilometres we’re produced in the equivalent or 306 petajoule (2011) [Eurostat • Dutch railway energy use is low at only 0.95% Northern Netherlands according to [Arriva 2013; Province of 2014] or roughly 2% of total EU energy use in compared to the EU27 average. Groningen 2013] requiring 250 – 300 terajoule energy use in transport. • Rail energy use amounted to a growing 1.1 – 1.4 diesel fuel (tank-to-wheel). • Rail energy use is correlated with economic petajoule diesel [CBS, CLO, 2013] and 1.2 TWh • The current direct tank-to-wheel greenhouse gas emissions output (see below chart). electricity [NS, 2013]. are estimated to be 18 – 22 mln ton CO2 equivalent. • Electricity provided most of the rail energy use at • For regional rail passenger transport, the diesel fuel Main question: can new powertrain and fuel technologies approximately 79%. Diesel provided most of the use was 18 – 23 mln litre diesel in 2012 in the contribute to more sustainable performance of regional rail remainder. Netherlands [CBS, Arriva, Veolia, Syntens, 2013] passenger transport? Transport energy use and GDP developments correlated Index 2002 = 100 [Eurostat 2014] 130 EU27 Rail energy use in EU27 Rail energy use in The Netherlands Netherlands energy use in terajoule [EurostatEU27, 2014] energy use in terajouleNetherlands[Eurostat, 2014] 125 Germany 10 400 Sweden petajoule 120 petajoule United Kingdom 350 8 EU27 GDP 115 300 Transport EU27 energy use 6 110 250 The Netherlands 200 105 4 150 100 100 2 95 50 0 0 90 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 4 WTW analysis of future trains and fuels report version 1.0 Duinn April 2014 Method and scope Energy-efficiency, renewability and greenhouse gas emissions provide a basis for assessing the sustainability performance of trains. Comparing future train technologies and fuels requires a thorough assessment of availability, reliability, safety, affordability, social acceptability and sustainability. This report does not aim so broadly, but focuses on energy-efficiency, renewability and greenhouse gas performance to assess the sustainability performance of a number of technologies.