DESIGN STUDY FOR THE RETROFITTING OF FLYWHEEL UNITS (ESU'S) UNDER THE CARBODY OF EXISTING COMMUTER TRAINS

Ziel

THE AIM OF THE NEDERLANDSE SPOORWEGEN PROJECT IS TO TEST THE APPLICATION OF FLYWHEELS IN TRAINS. THE CONCEPT HAS BEEN PROVEN IN THE NEZ YORK METRO CARS, AND MAY BE ATTRACTIVE TO COMMUTER SERVICE TRAINS AS WELL. AS EACH RAILROAD PASSENGER CAR IN A MULTIPLE TRAIN UNIT IN COMMUTER SERVICES WEARS OUT A LARGE NUMBER OF BRAKE BLOCKS, THE APPLICATION OF FLYWHEELS WOULD NOT ONLY SAVE TRACTION ENERGY - ABOUT 20 %, OR MORE - BUT ALSO THE ENERGY FOR PRODUCING THE BRAKE BLOCK (REDUCTION OF BRAKE BLOCK WEAR BY 50 % SAVES 800 KG OF BRAKE BLOCKS PER YEAR EQUIVALENT TO 4.44 X 10EXP3 KWH OF MANUFACTURING ENERGY PER YEAR PER TRAIN) AND WILL ALSO LEAD TO LOWER MAINTENANCE COSTS.

A DESIGN STUDY IN PROGRESS WILL ELABORATE THE MECHANICAL MODIFICATIONS REQUIRED TO RETROFIT FLYWHEEL UNITS OF 1 MW AND ASSOCIATED EQUIPMENT, UNDER THE FLOOR OF TWO EXISTING CAR TRAINS TYPE V (USING 2 ESU'S PER TRAIN IT IS EXPECTED TO SAVE 2.5 X 10EXP5 KWH PER YEAR PER TRAIN).

SINCE THE PAYBACK PERIOD FOR SUCH A SYSTEM IS LONG, IT IS NOT LIKELY THAT THIS DEVELOPMENT WILL PAY FOR ITSELF IN THE NEAR FUTURE. NEDERLANDSE SPOORWEGEN, HOWEVER, STILL REMAINS INTERESTED IN THIS SUBJECT BECAUSE OF THE LOWER MAINTENANCE OUTLAY AND COSTS, AND ADVANTAGES WHICH CANNOT ALWAYS BE DIRECTLY EXPRESSED IN MONEY TERMS, SUCH AS THE REDUCTION IN NOISE GENERATED DURING THE BRAKING PERIOD.

Programm/Programme

PRE-ENNONUC 2C - Energy research and development programme (EEC), 1979-1983

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Koordinator

NV Nederlandse Spoorwegen

EU-Beitrag

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Adresse

Moreelsepark 1
3511 EP Utrecht
Niederlande

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Ziel

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