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   Batteries (storage technology)  evaluated  
Batteries (or accumulators) are electrochemical energy storage devices used for a wide variety of purposes. Compared to other storage devices batteries have very high energy densities, but low power density and therefore high charging times. Some modern high performance batteries do however reach power densities that are promising for braking energy storage in automotive and (to a smaller extent) railway applications.
Technology field: Regenerative braking and energy management
close main section General information
  open sub-section Description
close main section General criteria
  open sub-section Status of development: concept
  Time horizon for broad application: (no data)
  Expected technological development: highly dynamic
  Benefits (other than environmental): not applicable
  Barriers: high
  Applicability for railway segments: medium
    Type of traction:  electric - DC, electric - AC, diesel
    Type of transportation:  passenger - regional lines, passenger - suburban lines
    Grade of diffusion into railway markets:
  Diffusion into relevant segment of fleet: 0 %
  Share of newly purchased stock: 0 %
  Market potential (railways): (no data)
close main section Environmental criteria
  open sub-section Impacts on energy efficiency:
  Energy efficiency potential for single vehicle: > 10%
  Energy efficiency potential throughout fleet: 1 - 2%
  Other environmental impacts: ambivalent
close main section Economic criteria
  open sub-section Vehicle - fix costs: not applicable
  Vehicle - running costs: significant reduction
  Infrastructure - fix costs: low
  Infrastructure - running costs: unchanged
  Scale effects: medium
  Amortisation: (no data)
close main section Application outside railway sector
  open sub-section Status of development outside railway sector: in use
  Time horizon for broad application outside railway sector: in 5 - 10 years
  Expected technological development outside railway sector: highly dynamic
  Market potential outside railway sector: high
close main section Overall rating
  open sub-section Overall potential: interesting
  Time horizon: long-term
References / Links:  Caputo 2000;  Hennig, Stephanblome 2000;  Hentschel et al. 2000;  US Department of Energy
Attachments:
Related projects:  Studies performed on energy storage systems
Contact persons:
 date created: 2002-10-09
 
 
© UIC - International Union of Railways 2003
 
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