The Application of Gas Turbines For LNG Carrier Propulsion Systems (eBook)

Published Date

January 2005

The Application of Gas Turbines For LNG Carrier Propulsion Systems (eBook)

(Excludes any applicable taxes)

An overview of the joint review of alternative propulsion systems undertaken by Shell and Rolls Royce. (7pp)

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Large LNG ships have traditionally been driven by steam turbine propulsion systems, while extremely reliable are inefficient in terms of fuel consumption. It should be noted that the oil price shocks of the 1970's brought about the demise of steam turbines in virtually all other merchant marine applications.

For LNG ships built up to about 20 years ago, there was little incentive to seek more efficient propulsion plants because the state of the cargo tank insulation technology was such that, on a laden voyage, the natural boil-off gas flow provided approximately 100 % of the fuel requirements.

The first radical move away from the steam propulsion model took place with the ordering from Chantier de l'Atlantique of an LNG ship with a dual fuel diesel electric propulsion system. While it is considered to be an attractive solution, it is not necessarily the best solution for all projects as different projects have their own unique 'driver's Over the years, Shell Shipping Technology has studied various propulsion options for LNG vessels. For an alternative to be attractive, it must obviously be environmentally and economically 'better' than the traditional steam turbine option while delivering similar high levels of reliability, redundancy and maintainability.

Over the years, a 'watching brief' was kept on gas turbine developments and, in 2002, a decision was taken to undertake some more detailed reviews on the application of gas turbines to LNG ship propulsion. The trigger for this was recognition that, driven by the aviation industry, there had been significant improvements in both fuel efficiency and reliability.

These studies have been undertaken jointly on a non-confidential basis with Rolls Royce Marine and have culminated in the publication of this paper.

Paper Delivered by:
W.S.Wayne (Shell Shipping Technology)
J.D.Cooke (Shell Shipping Technology)
R.W.Tooke (Rolls-Royce)
J.Morley (Rolls-Royce)

Prepared for:
Gastech Bilbao 2005

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 Application of Gas Turbines For LNG Carrier Propulsion Systems (eBook)
Product Code: 4433g085
Published Date: January 2005

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