Dual-Fuel Propulsion System for LNG Carrier

Thursday, July 12, 2007
Hyundai Heavy Industries Co., Ltd. (HHI) has developed the first Korean Dual-Fuel Diesel-Electric (DFDE) propulsion system for LNG carriers. The DFDE propulsion system uses either oil or gas, depending on the situation. It uses an electric motor like large cruise ships and submarines, not a steam turbine, which is the traditional propulsion system for LNG carriers. The DFDE propulsion system improves fuel efficiency, reacts quickly, and provides a smooth voyage.

HHI was guided by both environmental and economic requirements while developing the Integrated Automation System, which includes the main engine, the electric propulsion system, other control systems, and the Ecobot. The Ecobot is the heart of the DFDE system, using any LNG gas that evaporates during transit to fuel the main engine. The DFDE propulsion system is expensive, costing roughly two to four percent more than traditional steam-turbine propulsion systems; within 5 years, however, the savings in fuel costs will more than make up for the initial extra cost.

HHI has delivered a 155,000 cu. m. LNG carrier with a DFDE propulsion system. The ship, ordered by BP of the United Kingdom, was named British Emerald. British Emerald runs faster than traditional LNG carriers when using the same amount of fuel, and when running at a speed of 20 knots, the DFDE system reduces fuel consumption by 40 tons per day compared to a steam-turbine propulsion ship, which uses 180 tons of fuel per day at that speed.

“The biggest reason we chose the DFDE propulsion system was for the environment. But it was a big adventure when we ordered it,” said Mr. Adrian Howard, vice-chairman of technical management at BP.

“All LNG carriers had steam-turbine propulsion systems when we received the order in 2004. It was exciting to get a chance to develop the first alternative system with this order,” said an HHI representative.

HHI received an order for six LNG carriers with DFDE propulsion systems (including two ships for Hyundai Samho Heavy Industries) in September 2004. The first of the six ships completed, British Emerald, is 288m in length, 44.2m in width, 26m in depth, and has a service speed of 20 knots.

The development of the DFDE propulsion system is the result of 30 years of LNG carrier R&D experience. HHI began its research and development on LNG carriers at the end of the 1970s, building the world’s sixth, and Korea’s first, LNG carrier in 1990.

HHI plans to produce the duel-fuel engine and most of the core equipment, including the electric motor, switchboard, and generator, in Korea by 2008.

Maritime Reporter February 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

LNG

ADB Okays $30mln for Pak LNG Terminal

The Asian Development Bank (ADB) has approved a $30 million project loan to Engro Elengy Terminal Private Limited, a special purpose company which will build Pakistan’s

Davie Building LNG-powered Ferries

Canadian shipbuilder Davie held a keel laying ceremony for MV Armand-Imbeau II, marking the beginning of the hull assembly for this first of two sisterships under

ClassNK Updates Guidelines for Floating Offshore Facilities

ClassNK released a new version of its Guidelines for Floating Offshore Facilities for LNG/LPG Production, Storage, Offloading and Regasification.   Available on the ClassNK website,

 
 
Maritime Standards Naval Architecture Offshore Oil Pipelines Pod Propulsion Port Authority Ship Electronics Ship Repair Ship Simulators Winch
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1617 sec (6 req/sec)