During the last years has been new projects involving gas fuelled engines on ships. This paper discusses the experiencies of DNV (Det Norske Veritas) on gas fuelled ships, gas engines und rule development on this branch. Operational experience with several ships (Glutra ferry, two supply vessels equipped with dual fuel gas engines, a Knutsen LNG-carrier with gas fuelled engines in combination with conventional diesel engines). DNV Rules for classification of gas fuelled engine installations were introduced in January 2001. The work DNV has done on risk evaluations and expectations for future gas fuel projects will be presented. The environmental aspects (NO(x) and CO2 emissions) are presented. NO(x) emissions were higher than expected (2,5 g/kWh). The CO2 reduction for the gas supply vessels are predicted to be about 20% compared to the diesel option. HC (hydrocarbons), CO and soot emissions are low. Some fundamentals of the gas engine technology are discussed (Otto cycle and Diesel cycle engines) particularly in relation to fuel injection and ignition. Finally the problems of new Rules for gas fuelled engine installations and requirements for risk assessment (formal safety assessment) an explosion assessment are discussed.
Gas fuelled engine installations on ships - DNV's experience and expectations
Gasbetriebene Maschinenanlagen auf Schiffen - Erfahrungen und Erwartungen von DNV (Det Norske Veritas)
2003
15 Seiten, 11 Bilder, 2 Tabellen, 8 Quellen
Aufsatz (Konferenz)
Englisch
DNV's new environmental tanker
Online Contents | 2011
Tema Archiv | 2007
|British Library Conference Proceedings | 2007
|Gas Fuelled Ships Conference Preview
Online Contents | 2012