A New Method of Determining Energy Efficiency Operational Indicator for Specialized Ships

Prill, Katarzyna; Behrendt, C.; Szczepanek, Marcin; Michalska-Pożoga, I.

doi:10.3390/en13051082

Cited by 18 publications

(9 citation statements)

References 14 publications

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“…This measure does not set targets, so it is unlikely to reduce emissions significantly [40]. Prill et al [41] set out a methodology for defining EEOI for specialised vessels, given that such vessels may find it hard to apply the IMO recommended method. Other operational improvements such as slower ship speeds, the use of larger, more efficient ships, weather routing and scheduling would also help.…”

Section: Methodological Approaches For Decarbonising Maritime Transportmentioning

confidence: 99%

Optimal Slow Steaming Speed for Container Ships under the EU Emission Trading System

Goicoechea

Abadie

2021

Energies

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Slow steaming is an operational measure in ocean-going vessels sailing at slow speeds. It can help climate mitigation efforts by cutting down marine fuel consumption and consequently reducing CO2 and other Greenhouse Gas Emissions (GHG). Due to climate change both the European Union (EU) and the International Maritime Organization (IMO) are analysing the inclusion of international shipping in the EU Emissions Trading System (ETS) in the near future or alternatively implementing a carbon tax. The paper proposes a methodology to decide the optimal speed of a vessel taking into account its characteristics and the factors that determine its economic results. The calculated cash flow can be used in valuation models. The methodology is applied for a case study for any container ship in a range from 2000 to 20,000 Twenty-foot Equivalent Units (TEU) on a leg of a round trip from Shanghai to Rotterdam. We calculate how speed reduction, CO2 emissions and ship owner’s earnings per year may vary between a business-as-usual scenario and a scenario in which shipping is included in the ETS. The analysis reveals that the optimal speed varies with the size of the vessel and depends on several variables such as marine fuel prices, cargo freight rates and other voyage costs. Results show that the highest optimal speed is in the range of 5500–13,000 TEUs whether or not the ETS is applied. As the number of TEUs transported in a vessel increases emissions per TEU decrease. In an established freight rate market, the optimal speed fluctuates by 1.8 knots. Finally, the medium- and long-term expectations for slow steaming are analysed based on future market prices.

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Section: Methodological Approaches For Decarbonising Maritime Transportmentioning

confidence: 99%

Optimal Slow Steaming Speed for Container Ships under the EU Emission Trading System

Goicoechea

Abadie

2021

Energies

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“…The role of EED is to measure the reduction of emission through technical tools, whereas EEOI and SEEMP both measure the operations that should be carried forward for the purpose of mitigating the greenhouse carbon. MBM has the responsibilities to operationally and technically measure the carbon markets such as the trading system emission [53].…”

Section: Current Practices In Green Transportation Implementations Inmentioning

confidence: 99%

Green Transportation in Green Supply Chain Management

Saada¹

2021

Green Supply Chain - Competitiveness and Sustainability

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Organizations of the present day have directed their work patterns by acquiring the approach of green supply chain management (GSCM), in order to combat harmful environmental concerns. The most prominent reason behind the adoption of green strategy is to reduce the burden of the polluted environment. It is a concept which identifies the relationship between the supply chain operations and the natural environment. The present chapter provides a detailed discussion regarding the application of green transportation in green supply chain management, while shedding light to the evolution of green supply chain management, and its principle along with the factors that support total quality environmental management. The overall discussion is focused by elaborating the examples of green transportation in GSCM. The discussion revealed that most of the international markets prioritize the emission of gas, rather than focusing on implementing the green technologies in transportation. Slow steaming, voyage optimization, and efficiency in port operations are some of the major recent trends of green transportation identified in green supply chain management. However, some of the common examples of green transportation in GSCM dalsey hillblom lynn (DHL) model of green transportation and ingvar kamprad, elmtaryd agunnaryd (IKEA) model of green transportation which serves as the major initiatives in the management of green transportation.

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“…In the last fifty years, maritime transport has gained great importance [1] because it is the most energy efficient way to move goods compared to air and land transport. It currently accounts for 95% of world trade transit [2].…”

Section: Introductionmentioning

confidence: 99%

Computational Comparison of AC and DC Motors to Hydrodynamic Changes in Marine Fishing Vessels

Correa¹,

Muñoz²,

Díaz³

et al. 2023

TecnoL.

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The objective of this article is to make a comparison in a computational environment between an alternating current motor and a direct current motor is made for dynamic variations in the propulsion of an artisanal fishing boat. Initially, the boat was simulated in the Maxsurf software to obtain the dynamic behaviors for pitching, rolling, yawing, and heave motions with wind and wave perturbations for a Pierson Moskowitz spectrum. Subsequently, the motors are selected and in Matlab/Simulink software and a torque behavior required by the vessel to act on the resistance presented in each dynamic motion is proposed. This allows for analyzing the required mechanical and electrical conditions, using the curves obtained in the simulation. Finally, it is concluded that taking into account the criteria of torque, power, speed, and current, the results obtained show that the DC motor is more efficient than the three-phase AC motor for artisanal fishing vessel applications. In addition, the two motors require greater effort to overcome the disturbance related to the rolling motion in the steady-state, while in the transient state the DC motor requires a higher starting torque and the AC motor presents oscillations, which are undesirable disturbances because they produce instability in the electrical system. Additionally, it is important to take into account the energy source that feeds the motors, which can be alternating current or direct current.

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A New Method of Determining Energy Efficiency Operational Indicator for Specialized Ships

Cited by 18 publications

References 14 publications

Optimal Slow Steaming Speed for Container Ships under the EU Emission Trading System

Optimal Slow Steaming Speed for Container Ships under the EU Emission Trading System

Green Transportation in Green Supply Chain Management

Computational Comparison of AC and DC Motors to Hydrodynamic Changes in Marine Fishing Vessels

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