A comparison of the traction energy for different propulsion systems of small cars is being made based on identical mission and performance. Two persond have to be transported, drive range is 200 and 400 km and acceleration levels are 10, 20 and 30 W/kg max. veh. weight. The maximum vehicle weight results from the fixed weight of the body and chassis of the vehicle, the maximum payload and the variable weights of the relevant power trains, energy carriers and conversion systems. The comparison is made for Diesel and LH2 internal combustion systems, PEM-Fuel Cell systems with Methanol and H2 and battery systems with Zinc/Air-battery and NaNiCl2-battery. The Diesel system only shows the lowest primary energy consumption per km at highest acceleration level. At medium and low acceleration, the battery system can competeor is even less in consumption. All other systems gave higher values especially at high acceleration level. Future PEM fuel cells could compete at low acceleration if the system weight can substantially be reduced. Liquid hydrogen does not make sense at all by reason of energy consumption. The Diesel system cearly dominates in low vehicle weight. This result can also be taken as a primary indicator for the costs (viz. cost per mass unit) although reliable costs for the alternative systems do not yet exist. In summary, the analysis clearly points to the battery systems as an alternative for the Diesel system for short and medium ranges.
Hydrocarbons, hydrogen, electricity, fuel cells - which way to go?
Kohlenwasserstoff, Wasserstoff, Elektrizität, Brennstoffzellen - welchen Weg sollte man wählen?
1997
9 Seiten, 4 Bilder, 1 Tabelle, 13 Quellen
Conference paper
English
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