Page 21: of Maritime Reporter Magazine (July 2011)

DSME Unveils High-Pressure Fueled Gas Supply SystemIn May 2011, Daewoo Shipbuilding Marine Engineering (www.dsme.co.kr, CEO Mr. Sang-Tae Nam) has solely developed a new HP-FS(High-Pressure Fu- eled as Supply) system for MAN-Diesel Turbo?s ME-I(as Injection) Engine, and presented it to the market via a road show in Copenhagen, Denmark. Though there are small and middle size LN fueled vessels already, this dual fuel engine for large commercial vessels which cover most of shipping industry is an original. This HP-FS system effectively supplies highly-pressurized (about 00 bar) natural gas fuel to an engine. To date, existing FS systems compress gas to a high pressure. This process requires enormous amounts of electricity and large deck area to accommodate the size of this equipment.However, DSME HP-FS system uses another method to supply gas. This system compresses liquefied natural gas and vaporizes it into gas form. With this method, this system can supply high pressurized gas (about 00 bar) using low electricity (e.g. about 100kW for the same amount gas supply) compared to existing similar products. It also is compact enough to be mounted on the ship, so it is the most suit-able and efficient device for ME-I engines which need high pressurized natural gas. As a matter of fact, the ME-I engine had already been developed in 14 and applied to power plants. But it has never been loaded on commercial ships because there was no such high pressure gas supply system with high efficiency so far. DSME HP-FS system fixed all these kinds of efficiency and size problems, so it has opened a new era for LN fueled propulsion of vessels. Due to the framework created by the convention on climate change, many indus- tries will start to move from traditional fossil fuels to clean energy. In shipping, large LN-fueled vessels will bring about a revolutionary change. LNG i e ne-enerain e a i eniay eaie and e- riendy Ti i reried a ered enine ei iniiany eer an an e in er r diee dereain CO eiin y er and SO eiin y er I i a enia The price per ther- mal unit(USDmmBTU(1 Million British Thermal Unit)) for LN has been histor- ically cheaper than that of Bunker-C oil or marine gas oil(MO). Experts generally expect this trend to continue into the near future. Thus compared with a conven- tional diesel propulsion system, it is expected that LN propulsion systems will open a new era in ship propulsion market. DSME expects its 1st contract for an LN fueled vessel soon. Additionally, it has been predicted that LN-fueled propulsion systems will be also be adapted for use in other commercial vessels such as containerships, crude oil carriers, and so on. While others are currently attempting to develop a similar device, DSME is lead- ing the market right now with this state-of-the-art technology. In addition, DSME?s HP-FS system design is based on proprietary technologies that are under many domestic and international patents. DSME has been applying for technical patentsin several foreign countries since 2007. Up to now, DSME registered 25 patents in United States, South orea, Europe and has been granted patents including ones for a high pressure pump(HP Pump), high pressure vaporizer(HP aporizer), etc. July 2011www.marinelink.com 21