首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 31 毫秒
1.
The CO_2 emission reduction policy of the International Maritime Organization(IMO) recommends that the operation of ships,managed by maritime transport companies, should be energy-efficient. An evaluation method that can determine how successfully a ship implements the energy efficiency plan is proposed in this study. To develop this method, the measures required for energy-efficient ship operations according to the Ship Energy Efficiency Management Plan(SEEMP) operational guidelines were selected. The weights of the selected measures, which indicate how they contribute to the energy-efficient operation of a ship, were derived using a survey based on the analytic hierarchy process(AHP) method. Consequently, using these measures and their weights, a new evaluation method was proposed. This evaluation method was applied to shipping companies in South Korea, and their ship operation energy efficiency indices were derived and compared. This evaluation method will be useful to the government and shipping companies in assessing the energy efficiency of ship operations.  相似文献   

2.
Concern about global climate change is growing, and many projects and researchers are committed to reducing greenhouse gases from all possible sources. International Maritime (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.  相似文献   

3.
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.  相似文献   

4.
5.
基于国际海事组织(IMO)限制温室气体排放(GHG)条约,阐述了船舶能效设计指数(EEDI)的概念,其计算公式中各项参数的含义及降低EEDI值的途径,重点指出EEDI的出现对我国造船业带来的影响及挑战。船舶采用经济航速是最为有效的节能减排的方式,但对营运商不是最佳选择,故而研发低碳燃油等优化技术成为当下最为重要的任务。船舶能效设计指数的强制实施在短期内对我国造船业造成了一定的冲击,但是长远看会进一步推进我国造船业进行深入的技术改造,从而提高中国船舶企业的综合竞争实力。  相似文献   

6.
近年来,全球气候变暖问题日趋严重,船舶的温室气体排放开始受到航运业的关注,新船能效设计指数( EEDI)并其来计算船舶的二氧化碳排放.主要研究近两年国际海事组织(IMO)海上环境保护委员会( MEPC)所关注的海洋气象因子fw.船舶的波浪增阻是计算影响因子fw时必需的一项重要参数.针对fn计算公式中船舶在零航速时波浪绕射增阻的计算方法进行研究,根据三维势流理论计算了简化船模、集装箱船及油船模型的波浪漂移力,并将计算得到的数值结果与日本专家提出的方法计算结果进行对比,发现了其中存在的一些问题并就这些问题做了分析和总结.目前fw的计算方法仍在研究中,研究成果对于该计算方法的完善有一定的参考价值.  相似文献   

7.
自1997年京都议定书生效后,全球气候变暖和温室气体排放问题引起了业界越来越多的关注。2013年1月1日以后,船舶能效设计指数(Energy Efficiency Design Index,简称EEDI)将正式生效,这是第一个专门针对国际海运温室气体减排的强制性法律文件。这一强制性文件的生效无疑将对国际海运界,特别是对我国航运界带来革命性的影响。本文从EEDI诞生的历史、EEDI公式解析、EEDI计算、EEDI认证过程及EEDI公式实船应用和设计考虑等方面略作浅显的分析。  相似文献   

8.
ABSTRACT

A considerable amount of energy is consumed with every completed ship voyage and each port operation performed. Recent regulative approaches by the IMO are to enforce the shipping industry to become more energy efficient and sustainable. There is a growing amount of literature on the energy efficiency management of ships and ports. However, there is still inadequate research effort on the ship–port interface in order to obtain an Integrated Energy Efficiency framework for marine transport operations. In this research, a theoretical concept is generated to measure holistic energy efficiency in shipping operations. The main purpose of this paper is to identify nodes of the integrated ship-port energy efficiency framework and develop a probabilistic approach, which can help to increase energy efficiency and reduce CO2 emissions for shipping companies. This research generates an application of BBNs on ship–port interface regarding the integrated operational energy efficiency interactions by aiming to optimise holistic operational energy efficiency and CO2 emissions. The outcomes suggest that it would be possible to increase the probability of a more energy efficient and sustainable marine transport operation by integrating the influences of port and ship operation performances and their elements on the related route planning and slow steaming decision-making.  相似文献   

9.
Since shipping companies are highly competitive, we ask whether financial risk assessment tools impact company performance and, therefore competitiveness and efficiency. Stochastic Frontier Analysis (SFA) is used in the evaluation. Based on distinct features of the risk-return relationship, three cargo segments in the shipping industry are studied—dry bulk, liquid bulk, and containerized cargo. The influence of the risk assessment indicators on market and operational efficiency is subsequently determined using a panel regression to determine whether different asset allocation and risk management techniques improve the performance of shipping companies. In this analysis, 79 international shipping companies listed in Bloomberg Shipping Indices are included in the data collected from Thomson One for the period of 2001–2010. Efficiency estimation from the SFA shows that containerized cargo firms have better performance in both market and operating efficiencies. Operating efficiency performance is achieved by lowering liquidity. Market efficiency is improved by well-managed leverage level.  相似文献   

10.
殷振宇  许劲松 《船舶工程》2019,41(8):100-104
以一条丹麦籍客滚轮的实测数据为基础,通过人工神经网络建立案例船的油耗黑箱模型。基于该油耗模型,进一步采用动态规划算法获得规定航线上的最佳航行策略,有效提高案例船的EEOI能效指数,达到减排节能的目标。该项研究所建立的油耗优化系统框架完全以实测航行数据为基础,可以直接应用于不同船只,具有较普遍的适用性,对于SEEMP能效管理计划的实施具有重要意义。  相似文献   

11.
基于人工神经网络的船舶油耗模型   总被引:1,自引:1,他引:0  
叶睿  许劲松 《船舶工程》2016,38(3):85-88
针对船舶能效管理计划SEEMP的实施需求,寻求建立油耗模型的通用方法,为航行优化提供决策基础。以丹麦籍客滚轮MS Smyril号作为研究案例,对船舶实测运行数据进行了分析和预处理,并采用人工神经网络构建了船舶油耗和航速的黑箱模型。基于实测数据与模型预测数据的对比,验证了上述油耗模型的准确性和实用性,对于提高船舶能效运行指数EEOI具有重要意义。  相似文献   

12.
The choice of flag is one of the main strategic/critical decisions for shipowners in the initial stage of maritime enterprises. On the other hand, flagging out has a great influence on the prestige and economic benefits for traditional maritime countries. To address this issue, this paper proposes a Multiple Criteria Decision Making (MCDM) approach using a Primarily Strategic Action Plan (PSAP) in a short-run period and a Secondary Strategic Action Plan (SSAP) for a long-term perspective. The case is demonstrated with respect to the flagging out issue in Turkish shipping fleet. It measures the decision-making tendencies of shipowners using Turkish National Shipping Registry (TNSR), Turkish International Shipping Registry (TISR), and Open Registries (ORs) as potential shipping registry alternatives. The model outcomes originally contribute to Turkish maritime policy, especially in terms of strengthening and reinforcing of TNSR procedures.  相似文献   

13.
The author presents a model of the conflicts that arise in the transnational shipping industry with special emphasis on control alternatives during entry into shipping operations. He concludes that, since transnational shipping is a non-zero sum game, gains can be created for world shipping as a whole.  相似文献   

14.
The author presents a model of the conflicts that arise in the transnational shipping industry with special emphasis on control alternatives during entry into shipping operations. He concludes that, since transnational shipping is a non-zero sum game, gains can be created for world shipping as a whole.  相似文献   

15.
ABSTRACT

After the collapse of Hanjin Shipping in 2016, Korea faced the task of reconstructing its container shipping industry by enhancing the competitiveness of its shipping companies in a rapidly evolving market environment. Responding to this need for policy design, this study first attempts to understand the industry based on the shipping ecosystem, which comprises the following four areas: shipping finance, collection of cargo, acquisition of ships, and partnership among carriers. Second, it lists the structural problems, along with the remedial policy alternatives, that were identified after conducting in-depth interviews with industry experts, which included mid-level managers. Third, it conducts an importance-performance analysis to classify problems according to their importance and performance, followed by an analytic hierarchy process analysis to define the priorities of policy alternatives. Finally, drawing on the empirical results, the paper concludes with suggestions on an integrated policy package for the container shipping industry.  相似文献   

16.
To determine the competitive advantage of the national merchant fleet, based on the resource-based view, we collect competitive advantage assessment factors from literature, and use the analytic hierarchy process methodology to compare the importance of assessment dimensions and variables. The article's conclusions include a recommendation that the government review the current allocation of resources and implement measures to reinforce the national merchant fleet. This study's findings can be summarized as follows: (1) Criteria dimensions are ranked in the order of competitive strength, organizational capability, tangible assets, and intangible assets. (2) Criteria variables can be ranked in the order of freight revenue, cargo loading ratio, accuracy of shipping schedule, dead weight tonnage, number of vessels, standard of customer service, reputation of shipping company, cargo transportation volume, gross tonnage, sailing frequency, shipping knowledge, fleet specialization, number of crewmen, and fleet technological level. (3) The government should review existing maritime regulations and measures in order to formulate specific and transparent policies, and seek to adopt optimal alternatives from other countries concerning such issues as tonnage tax, bilateral income tax reduction or exemption agreements, second-registration mechanisms and shipbuilding basis, etc.  相似文献   

17.
The environment issue is one of the significant challenges that the liner shipping industry has to face. The International Maritime Organization (IMO) has set a goal to reduce greenhouse gas (GHG) emissions from existing vessels by 20–50% by 2050 and develop the Energy Efficiency Operational Indicator (EEOI) as a measure for energy efficiency. To achieve this goal, IMO has suggested three basic approaches: the enlargement of vessel size, the reduction of voyage speed, and the application of new technologies. In recent times, liners have adopted slow steaming and decelerated the voyage speed to 15–18 knots on major routes. This is because slow steaming is helpful in reducing operating costs and GHG emissions. However, it also creates negative effects that influence the operating costs and the amount of GHG emissions at the same time.

This study started with the basic question: Is it true that as voyage speed reduces, the operating costs and CO2 emissions can be reduced at the same time? If this is true, liners will definitely decelerate their voyage speed themselves as much as possible so that they can increase their profits and improve the level of environmental performance. However, if this is not true, then liners will concentrate just on increasing their profits by not considering environmental factors. This led the authors to set out three objectives: (1) to analyze the relationship between voyage speed and the amount of CO2 emissions and to estimate the changes by slow steaming in liner shipping; (2) to analyze the relationship between voyage speed and the operating costs on a loop; and (3) to find the optimal voyage speed as a solution to maximize the reduction of CO2 emissions at the lowest operating cost, thus satisfying the reduction target of IMO.  相似文献   

18.
Combining fuzzy set theory, Analytic Hierarchy Process (AHP) and concept of entropy, a fuzzy Multiple Criteria Decision-Making (MCDM) model for shipping company performance evaluation is proposed. First, the AHP is used to construct subjective weights for all criteria and sub-criteria. Then, linguistic values characterized by triangular fuzzy numbers and trapezoidal fuzzy numbers are used to denote the evaluation values of all alternatives with respect to various subjective and objective criteria. Finally, the aggregation fuzzy assessment of different shipping companies is ranked to determine the best selection. Utilizing this fuzzy MCDM model, the decision-maker's fuzzy assessment and the trade-off between various evaluations criteria can be taken into account in the aggregation process, thus ensuring more effective and accurate decision-making.  相似文献   

19.
This paper evaluates the impact of risk factors from the container security initiative on Taiwan's shipping industry by employing a risk management matrix to identify the severity and frequency of CSI risk factors, and discovers some appropriate risk management alternatives. This paper's findings are as follows: (1) The majority of risk factors have a moderate-risk level, and possible alternative risk management measures include risk prevention, self-retention and insurance. (2) Ensuring a balance between the efficiency of maritime logistics and supply chain security is of vital importance to any trading countries dealing with security risk issues. (3) The government should encourage the private sector to design and market security hardware and software, which will promote the growth of the domestic security industry and generate employment opportunities.  相似文献   

20.
The efficient integration of logistics modes is critical for international cargo shipping. The local transportation connecting to the export port then plays a vital role in such integration. This paper investigates the problems of carrier selection in the China Pearl River delta area, with respect to international shipping. The analytical hierarchy process (AHP) model is constructed based on a comprehensive industrial interviews and statistical analysis. Rather than simply ranking the given alternatives, we use AHP is used to analyse the weakness and strength of impacting factors in carrier selection. The model is implemented under different types of shipper. Seven criteria are statistically summarized from the questionnaire for evaluating eight different modes. The results are useful to those liner companies serving the PRD region in relationship to port selection and fleet deployment.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号