Wartsila Biopower Plant Inaugurated in Sweden

The Lextorp combined heat and power (CHP) plant was inaugurated in the municipality of Trollhattan in Sweden, 70 km [113 miles] northeast of Gothenburg last week. This BioPower plant, which was delivered by Wartsila Corporation, began supplying heat to the district heating network of Trollhattan Energi, a municipal company, in December 2005, and the first electricity was delivered January 2006.

The CHP plant comprises a Wartsila BioPower 5 DH plant that burns byproducts from the local forestry industry. The thermal output of 17 MWth for district heating, and an electrical output of 3.5 Mwe, corresponds to 30% of Trollhattan’s district heating needs. “This biomass-fueled plant strengthens our aim to deliver positive environmental benefits. Approximately 95% of the district heating in Trollhattan now comes from biomass fuel in the form of wood chips, a renewable energy source. Trollhattan is a growing municipality, which emphasizes the importance of this change of fuel source for future district heating needs. The investment is also economically sound, both for us and our customers,” said Mats Johansson, Managing Director of Trollhattan Energi. Wartsila’s biomass-fueled plants are clean and efficient. They are a practical solution, claims the release, for the need for renewable energy supplies with minimum environmental impact. They incorporate patented Wartsila BioGrate combustion technology to burn biofuels with high combustion efficiency and low NOx and CO emissions. The BioPower plant operates on a closed steam-feed water system separate from the district heating water system. Steam is generated in an efficient water-tube boiler, and supplied to a back-pressure steam turbine driving an alternator. Turbine exhaust steam then heats the district heating water, and the condensate is returned as feed water to the boiler. BioPower plants are highly modular, being based on proven technology and standardized components with a conservative design approach. The plants can be delivered and installed quickly. They are also highly automated, enabling unmanned operation. Wartsila provides customers with complete lifecycle power solutions, and offers products, solutions and services for the marine and energy markets. More than 12,000 employees man 130 Wartsila offices in more than 60 countries around the world.
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