Author(s)

W. Shi, D. Stapersma & H. T. Grimmelius

Abstract

In this paper, the ship propulsion system is broken down into components to estimate their individual activities in terms of energy conversion. For common used propulsion system of merchant ships, the efficiency of each propulsion component is presented. In the case study, the interaction between all the propulsion components in energy conversion is investigated by means of computer model simulation. Based on a selected ferry, the results demonstrate that, when operating in off-design conditions, the total energy conversion efficiency is slightly different from that in design condition, whereas, in terms of the ton-mile specific fuel consumption and energy index, the part loading of ship and off-design speed of ship scenarios show different impact, but both are much different from that in design condition. Keywords: energy conversion, ship propulsion system, off-design operation, tonmile specific fuel consumption, energy index.

Keywords

energy conversion, ship propulsion system, off-design operation, tonmile specific fuel consumption, energy index