Gas Turbine Propulsion Systems for LNG carrier applications (eBook)

Published Date

January 2002

Gas Turbine Propulsion Systems for LNG carrier applications (eBook)

(Excludes any applicable taxes)

This paper describes in detail the study results on the GT propulsion system configuration, specifications, environmental impact, efficiency and economics. (60pp)

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Even though the Gas Turbine (GT) propulsion system has many advantages in power to weight ratio, emission level, flexible machinery arrangement, efficiency and consequential cargo volume increase, it has not been adopted as a new propulsion system in an LNG carrier so far. As GT propulsion system has some characteristic features and limitations compared with the conventional system, detail technical and economic hinders have to be solved in order to implement in an actual LNG carrier.

Daewoo Shipbuilding & Marine Engineering (DSME) and Gaztransport & Technigaz (GTT) have carried out extensive technical and economic studies on the GT propulsion system. This paper covers the study results on the GT propulsion system configuration, major equipment specifications, machinery arrangements, cargo volume change, efficiency calculation, economic studies based on initial and operation costs, and environmental issues. Since the applicable LNG and fuel oil costs are important in the economic evaluations, the effects of different LNG prices have been compared. In addition, the cargo volume increase by the GT propulsion system machinery arrangement has been estimated and its economic effects have been described. With the inherent lightweight of the GT system, the cargo volume can be increased by reducing the forward part ballast tank and by eliminating the fuel oil tank. This can bring a favorable economic justification to the GT propulsion alternative. From the study, it can be carefully derived that GT propulsion can be one of the feasible alternative propulsion systems for LNG carriers. The results obtained through this study could be beneficial for the general understanding and feasibility study of the GT propulsion system to the potential ship owners, and could contribute to the environmental friendly and competitive propulsion system applications.
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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: Gas Turbine Propulsion Systems for LNG carrier applications (eBook)
Product Code: 4433g161
Published Date: January 2002

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