The DF-Electric LNG Carrier Concept (eBook)

Published Date

January 2002

The DF-Electric LNG Carrier Concept (eBook)

(Excludes any applicable taxes)

This paper makes a case for and describes the workings of a proprietary electric propulsion system. (38pp)

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LNG carrier propulsion has traditionally been based on a steam turbine power plant. The main reason for this has been the ability to utilise cargo boil-off gas as fuel. This propulsion system is also considered to be very reliable. However, the economical and environmental disadvantages of steam turbine propulsion are driving operators to seek alternative means for LNG carrier propulsion. Handling of the boil-off gas sets the technological limits for alternative LNG carrier propulsion system. Recent technological advances have finally brought some solutions that enable to displace the steam turbine propulsion. One technology is based on reliquefaction of boil-off gas, the other on using it as a fuel.

In addition to operating economy and environmental issues, also the very special requirements of LNG carrier operation have to be considered carefully when selecting the propulsion power plant. Safety and redundancy are the most important features required from the alternative power plant. Electric propulsion based on Wärtsilä dual fuel engines is shown to be a strong alternative for LNG carrier propulsion system

Paper delivered by:
Janne Kosomaa (Wärtsilä)

Prepared for:
Gastech Doha 2002

For over 45 years, the Gastech Exhibition & Conference has been at the forefront of the international gas and LNG market. This world-renowned event is regarded as the most significant meeting place for gas and LNG professionals, where the global industry gathers to do business.

Gastech hosts major IOCs, NOC’s, global utility companies, EPC contractors, shipbuilders, pipeline companies, manufacturers, distributors, technology and service providers, all who play an active role in the global energy value chain.

Title: The DF-Electric LNG Carrier Concept (eBook)
Product Code: 4433g159
Published Date: January 2002

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