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First Wärtsilä 50DF Power Plant

Posted on September 27, 2004

Wärtsilä Corporation has been awarded a power plant contract for an 84.8 MWe replacement and extension of an existing diesel power plant at Manisa in western Turkey. The contract includes the first Wärtsilä 50DF generating sets for a power plant installation, while Wärtsilä 34SG sets will be added in the extension. Under the new contract, existing diesel generating sets are to be replaced by three Wärtsilä 18V50DF sets, each having an electrical output of 16 638 kWe. In addition, four Wärtsilä 20V34SG generating sets will be installed, each giving 8730 kWe.

The plant will use waste heat recovery to supply hot water and steam to the industrial park. The total steam production capacity will be around 40 tonnes/hr. at a pressure of 14 bar. The generators will deliver electricity to the local grid of the industrial park and excess electricity will also be sold to the public grid. Flexibility will be given by the use of two sizes of generating sets and the dual-fuel capability of the larger generating sets. The existing engines burn heavy fuel oil, while the new engines will all run on natural gas. The Wärtsilä 50DF engines are dual-fuel engines and can switch over to operate solely on fuel oil in the event of an interruption in gas supply. The Wärtsilä 34SG engines are pure gas engines with spark ignition of the gas fuel.

Running on natural gas, the plant will be able to meet the environmental regulations without using the existing deSOx system that was installed with the original heavy fuel-burning engines and will bypass the deSOx system. Then if the operator should want to switch the 50DF engines to heavy fuel oil the deSOx will be put back into operation. The Wärtsilä 18V50DF generating sets are scheduled for delivery in September this year and the Wärtsilä 34SG sets will be delivered in January 2005.

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