为了研究船舶能量消耗的组成和EEOI的预测问题,以主机油耗作为研究重点,建立了船舶能效营运指数(ehip energy efficiency operational indicator,EEOI)分析预测仿真模型。建立了推进系统-船体运动-环境的联合数学模型,对船舶运动及推进...为了研究船舶能量消耗的组成和EEOI的预测问题,以主机油耗作为研究重点,建立了船舶能效营运指数(ehip energy efficiency operational indicator,EEOI)分析预测仿真模型。建立了推进系统-船体运动-环境的联合数学模型,对船舶运动及推进系统状态进行迭代计算。采用欧洲中期天气预报中心(European Centre for MediumRange Weather Forecasts,ECMWF)的气象数据,结合目标船的设计、实验参数及航线进行了仿真。根据对目标船在不同转速、不同航线的EEOI进行仿真,结果表明:不同主机转速对推进系统的能量消耗组成有显著影响。模型能够对不同转速的时间及EEOI进行预测,为航速设计提供依据;同时还能对不同航线的EEOI进行对比,为基于能效的航线优化提供了研究基础。展开更多
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...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。展开更多
为使电力推进船舶营运能效更佳,以“海洋石油301”轮为研究对象,对其动力源9L34DF双燃料柴油机和船机浆进行建模;以欧洲中期天气预报中心(European Centre for Medium⁃Range Weather Forecasts,ECMWF)作为气象源数据,通过对气象数据读...为使电力推进船舶营运能效更佳,以“海洋石油301”轮为研究对象,对其动力源9L34DF双燃料柴油机和船机浆进行建模;以欧洲中期天气预报中心(European Centre for Medium⁃Range Weather Forecasts,ECMWF)作为气象源数据,通过对气象数据读取和曲面插值,计算船舶通航环境风阻、波浪增阻。通过离散化思想对目标船航线进行划分,建立以航期、发电机出力约束和爬坡功率约束等条件下的最小船舶能效营运指数(Energy Efficiency Opera⁃tion Index,EEOI)为目标函数,提出一种基于自适应粒子群算法(Landscape Particle Swarm Optimizer,LAPSO)的能效优化方法。分别采用LAPSO进行单一的功率优化调度,功率调度与航速同时进行优化计算,与实船数据对比分析,结果表明:提出的仅功率优化调度可节省燃气0.6 t,EEOI降低约0.38%;功率与航速同时优化可节省燃气8.23 t,EEOI降低5.25%;验证了所提出的功率优化与航速同时优化方法的有效性,为智能船舶的智能能效提供辅助决策具有指导意义。展开更多
Concern about global climate change is growing, and many projects and researchers are committed to reducing greenhouse gases from all possible sources. International Maritime Organization (IMO) has set a target of 20%...Concern about global climate change is growing, and many projects and researchers are committed to reducing greenhouse gases from all possible sources. International Maritime Organization (IMO) has set a target of 20% CO2 reduction from shipping by 2020 and also presented a series of carbon emission reduction methods, which are known as Energy Efficiency Design Index (EEDI) and Energy Efficiency Operation Indicator (EEOI). Reviews on carbon emission reduction from all industries indicate that, Carbon Capture and Storage (CCS) is an excellent solution to global warming. In this paper, a comprehensive literature review of EEDI and EEOI and CCS is conducted and involves reviewing current policies, introducing common technologies, and considering their feasibilities for marine activities, mainly shipping. Current projects are also presented in this paper, thereby illustrating that carbon emission reduction has been the subject of attention from all over the world. Two case ship studies indicate the economic feasibility of carbon emission reduction and provide a guide for CCS system application and practical installation on ships.展开更多
文摘为了研究船舶能量消耗的组成和EEOI的预测问题,以主机油耗作为研究重点,建立了船舶能效营运指数(ehip energy efficiency operational indicator,EEOI)分析预测仿真模型。建立了推进系统-船体运动-环境的联合数学模型,对船舶运动及推进系统状态进行迭代计算。采用欧洲中期天气预报中心(European Centre for MediumRange Weather Forecasts,ECMWF)的气象数据,结合目标船的设计、实验参数及航线进行了仿真。根据对目标船在不同转速、不同航线的EEOI进行仿真,结果表明:不同主机转速对推进系统的能量消耗组成有显著影响。模型能够对不同转速的时间及EEOI进行预测,为航速设计提供依据;同时还能对不同航线的EEOI进行对比,为基于能效的航线优化提供了研究基础。
文摘Concern about global climate change is growing, and many projects and researchers are committed to reducing greenhouse gases from all possible sources. International Maritime Organization (IMO) has set a target of 20% CO2 reduction from shipping by 2020 and also presented a series of carbon emission reduction methods, which are known as Energy Efficiency Design Index (EEDI) and Energy Efficiency Operation Indicator (EEOI). Reviews on carbon emission reduction from all industries indicate that, Carbon Capture and Storage (CCS) is an excellent solution to global warming. In this paper, a comprehensive literature review of EEDI and EEOI and CCS is conducted and involves reviewing current policies, introducing common technologies, and considering their feasibilities for marine activities, mainly shipping. Current projects are also presented in this paper, thereby illustrating that carbon emission reduction has been the subject of attention from all over the world. Two case ship studies indicate the economic feasibility of carbon emission reduction and provide a guide for CCS system application and practical installation on ships.
