In order to comprehensively consider the environmental and economic performance of ship in life cycle and facilitate enterprises to make scientific decisions, proposing a comprehensive assessment method of the ship's environmental effect based on life cycle cost analysis, which is LCA-LCC method, namely, through the social willingness to pay method, the potential cost of ship environmental impact is integrated into the whole life cycle environmental analysis, and the integrated model of ship LCA-LCC is established to realize the integrated analysis for ship environmental performance and economic performance. In this project, the LCA-LCC integrated analysis method is applied to the demonstration of the construction and transformation of Xijiang LNG powered ship. The results show that the Xijiang LNG powered ship, which can reduce the comprehensive impact of the ship, is a reasonable substitute for diesel ship when considering the economic and environmental performance. In the future research, LCA-LCC evaluation method can be used to evaluate the comprehensive performance in the design stage, so as to provide a basis for the subsequent decision.
Xijiang waterway is a waterway with a total length of 854 kilometers. It is the second largest inland river after the Yangtze River, with Nanning, Guigang, Wuzhou, Zhaoqing, Guangzhou, Zhuhai and other important ports along the river. At present, the local government is vigorously promoting the project of "gasification of the Pearl River and greening of the Xijiang River". In order to make a scientific decision, environmental performance and economic performance must be considered comprehensively when ship power system is reformed and ship type is selected. However, the results of the LCA only reflect the impact of the assessed ship type on the environment and cannot be related to its economy. For this reason, it is urgent to establish a set of quantitative analysis methods through environmental impact costs, so as to carry out a more comprehensive assessment.
