Study on the Economic Speed of the Grand Canal in North Jiangsu

Abstract

AbstractThe energy conservation and emission reduction have been the development trend of various industries. However, the carbon emissions of the shipping industry are increasing year by year. Optimizing ship energy consumption is an important task to develop environment-friendly shipping and reduce the operating cost of shipping companies. Speed is one of the most critical factors affecting ship energy consumption. Many studies confirm that it is an efficient way to save ship energy consumption by obtaining appropriate speed and reducing ship energy consumption. Compared with rivers and oceans, inland canals have the characteristics of shallow water depth, narrow width and low water velocity. This paper analyzed the low-energy operation scheme of canal ships with the research object of the canal ships in North Jiangsu. The main factors affecting the energy consumption and the ship resistance were analyzed. Accordingly, the mathematical model of ship energy consumption, ship speed and environmental factors was established. The optimized economic ship speed was then calculated by calling the optimization algorithm guided by the lowest ship energy consumption. It is verified by an example of ships in the North Jiangsu Grand Canal. Applying the optimized economic speed to actual ship navigation can effectively reduce the ship fuel consumption, which is of great significance to achieve the goal of energy conservation and emission reduction.