The gasifier will be designed for an engine of the following specifications:

Bore: |
84.14 mm |

Stroke: |
80 mm |

Displacement (D): |
3.56 l |

Max. air/gas intake:_{} m³/s

Air/gas ratio (stoichiometric): 1.1: 1.0

Max. gas intake: _{} m³/s

The real gas intake is 0.0212 x f, in which

f = volumetric efficiency (%) of the engine and -is dependent on:

- rpm of the engine

- design of the air inlet manifold of the engine

- fouling of the air inlet manifold of the engine

At 1500 rpm, for a well designed and clean air inlet manifold f can be taken at 0.8 -

Therefore the real gas intake is: 0.0212 x 0.8 =30.017 m³/s

The heat value of the gas is taken at: 4800 kJ/m³

Therefore the thermal power in the gas is:

P_{g} = 0.017 x 4800 = 8-1.6 kJ/s = 81.6 kW

The engine efficiency depends partly on the engine's compression ratio. For a compression ratio of 9.5 : 1, the efficiency can be estimated at 28 percent.

Therefore the maximum mechanical output of this engine is:

P_{M} max. = 81.6 x 0.28 = 22.85 kW

The maximum electrical output (cos phi generator = 0.8) is therefore:

P_{E} max. = 22.85 x 0.8 = 18.3 kVA