Efficiency improvement on a cruise ship: Load allocation optimization
Efficiency improvement on a cruise ship: Load allocation optimization
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DOI：
10.1016/j.enconman.2018.02.080
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发表时间：
2018-05
影响因子：
10.4
通讯作者：
M. A. Ancona;F. Baldi;M. Bianchi;L. Branchini;F. Melino;A. Peretto;J. Rosati
中科院分区：
文献类型：
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作者：
M. A. Ancona;F. Baldi;M. Bianchi;L. Branchini;F. Melino;A. Peretto;J. Rosati
去年，全世界越来越关注减少燃油消耗和二氧化碳排放。若干工业领域以及民用和住宅部门已采用创新办法来设计和操作能源系统。这些行动旨在实现更高的能源转换效率值，还包括增加可再生资源的使用。在这方面，特别是在游轮部门，需要进一步努力提高所用能源系统的能源效率。本文的目的是提出一种基于遗传算法的优化框架，以最大限度地提高能源效率和最小的燃料消耗和热能耗散，通过优化船舶能源系统的负载分配。为此，提出并分析了现有游轮上能源系统的不同策略。特别是，两个主要的发动机配置已被定义：标准（当前的操作逻辑保持）和混合配置。对于每一个建议的战略-船舶是一个特殊的和有趣的应用孤立的能源网（即电网没有与电力和燃料的国家电网连接）-内部开发的软件已经适应和应用，以优化负载分配的各种能源系统。此外，还进行了经济和环境分析，以指出与拟议解决方案有关的好处或最终限制。所考虑的方法是基于对当前巡航能量系统配置进行经济和结构上合适的修改的概念，以达到提高能量效率的目标。进行的分析表明，混合动力策略允许达到最佳的结果，在能源（燃料消耗和散热减少），经济和环境的观点。
Last years have been characterized by a worldwide increasing attention towards the reduction of fuel consumption and carbon dioxide emissions. Several industrial fields, as well as the civil and residential sector, have introduced innovative approaches for the design and the operation of energy systems. These actions are aimed to reach higher values of energy conversion efficiency, also including an increase in the use of renewable resources. In this context, especially in the sector of cruise ships, further efforts are required to improve the energy efficiency of the employed energy systems. The aim of this paper is to propose an optimization framework based on genetic algorithms in order to maximize the energy efficiency and minimize both the fuel consumption and the thermal energy dissipation, by optimizing the load allocation of the ship energy systems. To this purpose, different strategies for the energy systems on board of an existing cruise ship are proposed and analyzed. In particular, two main engines configurations have been defined: standard (current logic of operation maintained) and hybrid configuration. For each proposed strategy – being the ship a particular and interesting application of isolated energy grid (i.e.a grid without connections with electric and fuel national grids) – an in-house-developed software has been adapted and applied to optimize the load allocation of the various energy systems. Furthermore, an economic and environmental analysis has been carried out, in order to point out the benefits – or the eventual limits – related to the proposed solutions. The considered approach is based on the concept of introducing economically and structurally suitable modifications to the current cruise energy systems configuration, in order to reach the goal of increasing the energy efficiency. The carried out analysis shows that the hybrid strategies allow to reach the best results in terms of energy (fuel consumption and heat dissipation reduction), economic and environmental points of view.