2. ?

3. The Electric Car - Zero-emissions
- Can be fed from RES

4. Charging a 25kWh battery
Power
[kW]
Charge duration [minutes]

5. Charging a 25kWh battery
% Efficiency
Charge duration [minutes]

6. Li-ion

7. Compressed Air Car
- Zero-emissions
- Can be fed from RES

8. Energy on board
Gasoline 50 kg 590 kWh
(1)
Li-ion 400 kg 53 kWh
(10 x less)
Pb-acid 200 kg 6 kWh
(100 x less)
Air, 300bar 200 l 7.8 kWh
Gasoline 1 l (eq.) 8.6 kWh
5385 km! world record

9. Power
DRIVE Time
CHARGE
Power
DRIVE
RE-FILL

10. The Concept (fast filling)
Slow pre-charge of Fast transfer from
a local reservoir local station to the car
Nearly isothermal
compression

11. The Problem
Heating-up the air
in the car reservoir

12. The Solution
Recirculating of the air after
equalized pressure allows :
- Equalised (low) temperatures
- High filling

13. Benefits from the recirculation
Strong reduction of the
air temperature in the
car through recirculation
(filling-time adapted to the reduced-scale demo at EPFL)

14. Benefits from the recirculation
Strong increase of
the air density
In the car reservoir
(filling-time adapted to the reduced-scale demo at EPFL)

15. AIR
CRYO / LN2