Combined Heat and Power Focus

DECC's Free resource supporting the development of CHP

CHP Helpline 0845 365 5153

Air Supply

Air is required in the engine for combustion, general cooling and ventilation. The supply of cooling and combustion air may be satisfied using either common or separate systems. In the case of very small installations (<100 kW) it may be perfectly satisfactory to draw cooling and combustion air directly from the surrounding plant room without recourse to special ducting. However, the plant room must have sufficient natural ventilation. In the case of larger engines, separate fresh air supply ducting may be required in order to obtain sufficiently cool combustion air.

N.B. Engine power output falls as charge air temperature increases. Care must, therefore, be taken with the location of combustion air intakes.
 

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