Electric power consumption predictive modeling of an electric propulsion ship considering the marine environment

Lim, Chaeog; Park, Byeong-Cheol; Lee, Jae Chul; Kim, Eun Soo; Shin, Sung‐Chul

doi:10.1016/j.ijnaoe.2019.02.011

Cited by 23 publications

(10 citation statements)

References 2 publications

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“…Hydrogen-powered ships can play a significant role in reducing shipping emissions [40]. Full electric ships will become an attractive solution for marine transportation with shorter distances to decrease the energy consumption [41][42][43]. The other considerable benefit of electric propulsion ships, similar to other electric transport modes, is to minimize GHG emissions and further reduce cost [44,45].…”

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confidence: 99%

Global Transportation Demand Development with Impacts on the Energy Demand and Greenhouse Gas Emissions in a Climate-Constrained World

et al. 2019

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The pivotal target of the Paris Agreement is to keep temperature rise well below 2 °C above the pre-industrial level and pursue efforts to limit temperature rise to 1.5 °C. To meet this target, all energy-consuming sectors, including the transport sector, need to be restructured. The transport sector accounted for 19% of the global final energy demand in 2015, of which the vast majority was supplied by fossil fuels (around 31,080 TWh). Fossil-fuel consumption leads to greenhouse gas emissions, which accounted for about 8260 MtCO2eq from the transport sector in 2015. This paper examines the transportation demand that can be expected and how alternative transportation technologies along with new sustainable energy sources can impact the energy demand and emissions trend in the transport sector until 2050. Battery-electric vehicles and fuel-cell electric vehicles are the two most promising technologies for the future on roads. Electric ships and airplanes for shorter distances and hydrogen-based synthetic fuels for longer distances may appear around 2030 onwards to reduce the emissions from the marine and aviation transport modes. The rail mode will remain the least energy-demanding, compared to other transport modes. An ambitious scenario for achieving zero greenhouse gas emissions by 2050 is applied, also demonstrating the very high relevance of direct and indirect electrification of the transport sector. Fossil-fuel demand can be reduced to zero by 2050; however, the electricity demand is projected to rise from 125 TWhel in 2015 to about 51,610 TWhel in 2050, substantially driven by indirect electricity demand for the production of synthetic fuels. While the transportation demand roughly triples from 2015 to 2050, substantial efficiency gains enable an almost stable final energy demand for the transport sector, as a consequence of broad electrification. The overall well-to-wheel efficiency in the transport sector increases from 26% in 2015 to 39% in 2050, resulting in a respective reduction of overall losses from primary energy to mechanical energy in vehicles. Power-to-fuels needed mainly for marine and aviation transport is not a significant burden for overall transport sector efficiency. The primary energy base of the transport sector switches in the next decades from fossil resources to renewable electricity, driven by higher efficiency and sustainability.

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confidence: 99%

Global Transportation Demand Development with Impacts on the Energy Demand and Greenhouse Gas Emissions in a Climate-Constrained World

et al. 2019

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“…In order to meet IMO emission regulations and achieve efficient ship operations, researches are focusing on substituting conventional propulsion drives with more efficient systems (Geertsma et al 2017 ; Curley 2012 ). Electric propulsion system is one of the alternative drives for mechanical ones adapted to different ship types providing more efficient operation at low speed (Nuchturee et al 2020 ; Lim et al 2019 ). Many researchers studied the effect of applying electric propulsion to commercial, cruise, and naval vessels (Hong et al 2012 ; Koo 2009 ).…”

Section: Introductionmentioning

confidence: 99%

“…Zahedi and Norum ( 2013 ) and Kwak ( 2014 ) presented a simulation for the electric system components and validating the design and mathematical models. Kwak ( 2014 ) and Lim et al ( 2019 ) analyzed a modeling of the ship electric propulsion based on the shipping and load flow characteristics. Furthermore, Dedes et al ( 2012 ) and Bassam et al ( 2017 ) discussed the applicability of using electric concept as a part of hybrid propulsion system for a certain ship type.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the environmental and economic impacts of electric propulsion systems onboard ships: case study passenger vessel

Ammar

Seddiek

2021

Environ Sci Pollut Res

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The International Maritime Organization (IMO) announced that maritime transport share by 2.89% in global greenhouse gases. Electric propulsion system appears as a promising option for reducing ship emissions, especially for high-powered vessels. The aim of the current paper is to investigate the environmental and economic impact of using electric propulsion systems. Simple eco-environmental model was presented to assess the best propulsion system for passenger ships. A comparison between diesel electric (DE) and combined gas turbine electric and steam (COGES) propulsion systems is conducted. As a case study, one of the cruise ships is selected. The results showed specific environmental benefits of COGES over DE propulsion option. From the design and operational viewpoints, COGES propulsion system is more energy efficient than DE by 9.3% and 27.55%, respectively. Economically, the values of the life cycle costs are 5,013 and 6,042 $/kW for DE and COGES systems, respectively. Finally, COGES seems as a greener option with a life-cycle cost-effectiveness of 612, 1970, and 6 $/ton for NO x , SO x , and CO 2 emissions, respectively.

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“…Lim et al (Lim et al 2019) presented an application of electric system in a ship to reduce nitrogen oxides (NOx) to be accepted with the regulations released from IMO. Offshore supply vessels and Lique ed Natural gas ships can use the electric propulsion system incorporated with Azipod propeller as shown in (Bassam et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Investigation of ship electric propulsion system performance from environmental and energy efficiency perspective

Elkafas

Shouman

2021

Preprint

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The maritime industry faces many challenges regarding the adverse environmental impact, whether at the level of legislation set by the International Maritime Organization (IMO) or the economic crises that arising from the Covid-19 pandemic. IMO has found that the highest percentage of ship emission is mainly coming from the ship propulsion systems. Therefore, the current research proposes an electric propulsion system to drive the ship instead of the conventional one to reduce ship emissions and enhance energy efficiency. As a case study, a passenger ship is investigated. The results showed that the proposed electric propulsion system has lower emission rates than the conventional one by 10%, 21%, and 88% for CO2, NOx, and SOx emission, respectively. From an energy efficiency point of view, the diesel-electric propulsion system enhances the energy efficiency and complies with the required IMO values as actual energy efficiency is about 66%, 70%, 83%, and 95% of the required IMO values at baseline, phase 1, phase 2 and phase 3, respectively.

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Electric power consumption predictive modeling of an electric propulsion ship considering the marine environment

Cited by 23 publications

References 2 publications

Global Transportation Demand Development with Impacts on the Energy Demand and Greenhouse Gas Emissions in a Climate-Constrained World

Global Transportation Demand Development with Impacts on the Energy Demand and Greenhouse Gas Emissions in a Climate-Constrained World

Evaluation of the environmental and economic impacts of electric propulsion systems onboard ships: case study passenger vessel

Investigation of ship electric propulsion system performance from environmental and energy efficiency perspective

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