College of Marine, Nautical and Radioelectronics Engineering, University of Cádiz, Campus de Excelencia internacional del Mar, Spain.
Sci Total Environ. 2021 Jan 1;750:141471. doi: 10.1016/j.scitotenv.2020.141471. Epub 2020 Aug 15.
The energy output and emissions from maritime transport have increased considerably over the last two decades. Countries in Europe, North America and Asia use different methodologies to calculate these important variables; two of the main methods used are known as the Ship Traffic Emission Assessment Model (STEAM) and the Ship Traffic, Energy and Environmental Model (STEEM). Furthermore, the International Maritime Organization has recently required additional parameters to be included in the calculation, but the procedure for calculating these is not defined. In this paper, a model named SENEM (Ship's ENergy Efficiency Model) is proposed to calculate the power delivered in real time by the main engine taking into account all the equations required for defining and calculating all these parameters together with the efficiency of both the shaft and propulsion system. This model has been tested and validated on board four Ro-Pax ships operating across the Strait of Gibraltar - three vessels powered by waterjet and the fourth by propeller. The results show differences of up to 40% compared with other models.
在过去的二十年中，海上运输的能源输出和排放有了显著的增长。欧洲、北美和亚洲的国家使用不同的方法来计算这些重要变量；其中两种主要的方法是 Ship Traffic Emission Assessment Model (STEAM) 和 Ship Traffic, Energy and Environmental Model (STEEM)。此外，国际海事组织最近要求在计算中纳入其他参数，但计算这些参数的程序尚未定义。在本文中，提出了一个名为 SENEM（船舶能源效率模型）的模型，用于实时计算主机提供的功率，同时考虑到定义和计算所有这些参数所需的所有方程，以及轴和推进系统的效率。该模型已经在四艘往返于直布罗陀海峡的 Ro-Pax 船舶上进行了测试和验证，其中三艘船由喷水推进器驱动，第四艘由螺旋桨驱动。结果表明，与其他模型相比，差异高达 40%。
