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.


Salvage

Indian Cargo Ship Sinks Off Oman

An Indian cargo ship loaded with vehicles and food supplies destined for Yemen sank on Saturday off the coast of Oman but without loss of life, Oman’s ONA state news agency reported.

El Faro Captain Ordered Crew to Abandon Ship before Sinking

The captain of the doomed El Faro cargo ship sounded an alarm for his crew to abandon the vessel shortly before it sank last fall in a hurricane near the Bahamas, killing all 33 onboard, the U.

26 Hours of Information Recovered from El Faro's VDR

A group led by the U.S. National Transportation Safety Board (NTSB) has gathered information from the recovered voyage data recorder (VDR) of sunken cargo ship

LNG

BP, ExxonMobil, ConocoPhillips 'Quit' Alaska LNG Project

BP, Conoco Phillips, and Exxon Mobil said that the 65-billion dollar megaproject would be too unprofitable for them to move into the next phase of development.

Viking Grace Marks 1,000 LNG Bunkering Milestone

From the very beginning, the M/S Viking Grace – delivered in January 2013 – was an environmental milestone.   The vessel attracted global attention as an environmental

Hoegh LNG Profits Dip

Norway-based owner and operator of floating LNG import terminals, Höegh LNG  reported a second quarter profit after tax of US$3.5 million, down from $6.3 million in the first quarter 2016.

 
 
Maritime Contracts Maritime Security Naval Architecture Navigation Pipelines Salvage Ship Electronics Ship Repair Ship Simulators Shipbuilding / Vessel Construction
rss | archive | history | articles | privacy | 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: 0.0645 sec (16 req/sec)