Table 1: Assumed values of the pertinent parameters to various components.


Optimal mode of the ICE3.5 kW
5000 rpm
Rotational inertia of flywheel0.5 kg/m2
Ideal air condition (ambient pressure and temperature)1 bar @
Frictional resistance of air compressor2 Nm
Mechanical efficiency of air compressor80%
Volume of storage tank105 liters
Efficiency of air turbine75%
Frictional resistance of air turbine2 Nm
Allowable exhaust-gas backpressure0.5 bar