Benefits of Propulsion Integration on Fuel Efficiency of Marine Vessels
A major effort is undertaken to improve the energy efficiency of Shipping. This requires that the (engine) thermal efficiency and the ship propulsive efficiency are addressed simultaneously. New IMO rules are referred to the vessel environmental indices (as overall energy efficiency per carried load and distance transported) than only to the efficiency of individual engine types and systems. . The reciprocating engine concept seems to remain the basis for fuel energy conversion to mechanical energy, with emphasis on fuel versatility and the broad introduction of gas. The ship propulsion systems (fixed or controllable pitch propellers, steerable thrusters and advanced designs of high- efficiency potential) undergo new development with emphasis on high vessel propulsive efficiency and engine compatibility. The vessel design itself is also to be adapted to the new propelling and machine room equipment. Obviously this integration can better be done in early ship and system design phases. The current paper describes the impact of the propulsion system and the propeller selection on the overall vessel efficiency optimization. A number of vessel cases are examined into detail: 1) Large containership applications at slow steaming/ propeller selection 2) Drilling vessel application/ thruster optimization 3) Gas engine application/ propeller control 4) Special vessel diesel mechanic application with twostage gear- boxes 5) Propeller power loading on vessel performance The paper attempts to make a quantification of the overall benefits of the judicious selection of propulsion characteristics and provides guidelines for the future.
Elias Boletis
W(a)rtsil(a) Corporation,Netherlands
国际会议
上海
英文
1-12
2013-05-13（万方平台首次上网日期，不代表论文的发表时间）