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IFEU Heidelberg

37

6.2 Short distance passenger trains

6.2.1 Specific energy consumption

Subways/ urban trains and regional trains will be considered as short distance passen- ger trains. They will be differentiated in terms of specific energy consumption, specific energy savings and life-time driving performance. It is assumed that all these vehicles are electric. The specific energy consumption for both vehicles is stated by the literature in the range of 200 to 340 kJ/ t-km (Tab. 19). Most values, however, congregate around 250 kJ/ gross t-km. This results in specific energy savings of about 2.000 kJ for subways/urban trains and 1.750 kJ for regional trains (Tab. 19).

[ALBERT et al. 1997]

Subways

340

[BÜTTNER & HEYN 1999]

Regional trains

250

[BÜTTNER & HEYN 1999]

Subways

253

[IFEU 2002b]*

Regional train

190-195

[JORGENSEN & SORENSON 1997]

Urban trains

200-270

[JORGENSEN & SORENSON 1997]

Subways

261

Tab. 19: Final energy consumption of short distance trains

Source

Train type

Final energy [kJ/ gross t-km]

Value used in this study for short d

istance passenger trains

250

IFEU 2003

6.2.2 Life-time performance and energy savings

For subways, a comprehensive worldwide survey has been undertaken by the Interna- tional Association of Public Transport (UITP). The average age of vehicles is 15.6 years and the average annual performance 101’000 km ([ALBERT et al.]). Assuming a life- time of 30 years, the life-time performance will be around 3’000’000 km. According to [BÜTTNER & HEYN 1999], regional trains have an annual performance of about 150’000 km over a period of about 30 years. Other sources [INFRAS 1999a], however, state a life-time for rail cars of up to 50 years. After 25 years, these vehicles will un- dergo a total revision and then typically be applied not as express train, but as regional train rail cars. Data on life-time performances of different short distance trains are listed in Tab. 20. The average age of commuter locomotives and passenger coaches in the U.S. is available from the Bureau of Transportation Statistics [BTS 2001]. While loco- motive have a long time average age of almost 15 years, coaches reach even 19 years. A total life-time of about 30 years for locomotives and almost 40 years for coaches can thus be concluded.

Energy savings by light-weighting

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