Use of power and steam from cogeneration plants

A typical cogeneration system consists of an engine and a steam turbine, or a combustion turbine that drives an electrical generator. A waste heat exchanger recovers waste heat from the engine and/or exhaust gas to produce hot water or steam. Cogeneration produces a given amount of electric power and process heat with 10 to 30 % less fuel than it takes to produce the electricity and process heat separately. 

Cogeneration is normally installed when the plant uses the steam produced, or where an outlet for the steam produced is available. The electricity produced ean either be used by the plant or exported. [27, TWGComments, 2004] 

By the use of a cogeneration plant, not only are the energy costs reduced, but also the emissions caused by the production of energy. 

The use of a eogeneration system is not only applieable for consumers of a vast amount of energy as the data in Table 12.5 show. 

If required, possible outlets have to be available in the vicinity. 

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