船舶能效知识图谱构建与研究现状分析

Constructing of Knowledge Graph in Ship Energy Efficiency and Analysis of the Graph

为了全面、直观地分析船舶能效研究领域的现状、趋势及热点,为船舶节能减排、推动航运业实现双碳战略目标提供指导,在中国知网(CNKI)和Web of Science(WOS)两个数据库中对1990~2021年之间的船舶能效研究文献进行检索。基于CiteSpace软件,从发文量、作者、机构、关键词4个维度构建船舶能效研究知识图谱,从船舶技术能效、营运能效、政策法规3个方面重点分析了船舶能效研究趋势和热点问题。研究结果表明:从2018年开始,发文量快速增长,船舶能效领域的研究成果一直处于上升趋势;根据关键词聚类分析,中文文献三大类为船舶能效设计指数(Energy Efficiency Design Index,EEDI)、船舶能效、温室气体,英文文献三大类为ship energy system(船舶能源系统)、CO_(2)emissions(二氧化碳排放)、waste heat recovery(余热回收)。根据各类核心关键词分析可以进一步将能效技术分为技术能效和营运能效。围绕EEDI的技术能效热点为新能源技术,同时余热利用技术是短期的热点;围绕船舶能效营运指数(Energy Efficiency Operational Indicator,EEOI)和船舶能效管理计划(The Ship Energy Efficiency Management Plan,SEEMP)的营运能效技术热点为航速优化和能量管理策略。

Research literature on ship energy efficiency in 1990~2021 is searched in Databases CNKI and WOS(Web of Science).Based on the processing result of software CiteSpace,the Knowledge Graph in Ship Energy Efficiency is constructed in terms of number of papers,author,organization and keyword.The trend of ship energy efficiency and topics of general interest in the field are analyzed,mainly from the angle of ship technology,operation and policy.The research shows that the number of papers in the field has increased tremendously since 2018.The clustering on keywords indicates that most Chinese papers concern EEDI,ship energy systems and CO_(2)emission.As for English papers,the most interested topics are ship energy system,CO_(2)emission and waste energy recovery.Further analysis,dividing the energy efficiency into energy efficiency technology and operational energy efficiency,indicates that the technologies connected with alternative energy sources are widely discussed because of the introduction of EEDI;waste energy recovery technology attracted wide attention,but only a short period;and the researches about EEOI and SEEMP focused on speed optimization and energy management strategy.