scholarly journals An assessment on the efficient use of hybrid propulsion system in marine vessels

2020 ◽  
Vol 10 (2) ◽  
pp. 61-74
Author(s):  
Murat Bayraktar ◽  
Güldem A. Cerit
Keyword(s):  
Energy Efficiency ◽  
Fuel Consumption ◽  
Internal Combustion Engines ◽  
Focal Point ◽  
Renewable Energy Sources ◽  
Propulsion System ◽  
Environmental Benefits ◽  
Maritime Industry ◽  
Hybrid Propulsion ◽  
Marine Vessels

Many improvements are performed in the maritime industry to ensure sustainability and energy efficiency. The use of hybrid propulsion systems (HPS) in marine vessels constitutes one of the developments in this field. In this study,both economic and environmental benefits are targeted. The study aims to reduce the high fuel consumption of the engine per unit power at low loads and minimization of emissions by sourcing them from main engine by HPS. Overcoming the limitations of Annex VI (Prevention of Air Pollution from Ships) of International Convention for the Prevention of Pollution from Ships (MARPOL) are desired and the research hopes for a beneficial result on Energy Efficiency Measures such as Energy Efficiency Operational Indicator (EEOI). A comprehensive study is accomplished on the hybrid propulsion system components and the keywords used in the literature review are revealed. Furthermore, the articles that have “efficiency”, “vessel”, “propulsion” and “marine” topics published in Web of Science (WOS) between 1975-2020 are examined and 44 studies are obtained. The studies that have been reached are analyzed and interests of them are collect under the 18 heading and the focal point of each study is highlighted in article. According to the results, the hybrid system provides low fuel consumption, minimizes emissions and  costs, complies with the regulations of the International Maritime Organization, uses renewable energy sources, encourages the use of electric motors in addition to internal combustion engines, increases the efficiency of energy storage systems among other things. This article will be a significant resource for academicians, experts and companies on the Hybrid propulsion system in setting their focus.   Keywords: Hybrid propulsion, Energy saving, Global warming.

scholarly journals Modeling and Investigation of a Turboprop Hybrid Electric Propulsion System

Aerospace ◽  
2018 ◽  
Vol 5 (4) ◽  
pp. 123 ◽  
Author(s):  
Maria Cameretti ◽  
Andrea Del Pizzo ◽  
Luigi Di Noia ◽  
Michele Ferrara ◽  
Ciro Pascarella
Keyword(s):  
Fuel Consumption ◽  
Gas Turbines ◽  
Electric Propulsion ◽  
Internal Combustion Engines ◽  
Propulsion System ◽  
Pollutant Emissions ◽  
Noise Emission ◽  
Hybrid Propulsion ◽  
Hybrid Electric ◽  
Hybrid Configuration

Hybrid electric propulsion in the aviation field is becoming an effective alternative propulsion technology with potential advantages, including fuel savings, lower pollution, and reduced noise emission. On the one hand, the aeroengine manufacturers are working to improve fuel consumption and reduce pollutant emissions with new combustion systems; on the other hand, much attention is given to reducing the weight of the batteries increasing the energy density. Hybrid electric propulsion systems (HEPS) can take advantage of the synergy between two technologies by utilizing both internal combustion engines (ICEs) and electric motors (EMs) together, each operating at their respective optimum conditions. In the present work, some numerical investigations were carried out by using a zero-dimensional code able to simulate the flight mission of a turboprop aircraft, comparing fuel consumption and pollutant emissions of the original engine with other two smaller gas turbines working in hybrid configuration. An algorithm has been implemented to calculate the weight of the batteries for the different configurations examined, evaluating the feasibility of the hybrid propulsion system in terms of number of non-revenue passengers.

scholarly journals Experimental Research on the Energy Efficiency of a Parallel Hybrid Drive for an Inland Ship

Energies ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1675 ◽  
Author(s):  
Wojciech Litwin ◽  
Wojciech Leśniewski ◽  
Daniel Piątek ◽  
Karol Niklas
Keyword(s):  
Energy Efficiency ◽  
Negative Impact ◽  
Experimental Tests ◽  
Propulsion System ◽  
Hybrid Propulsion ◽  
Fold Reduction ◽  
Emission Mode ◽  
Loads Analysis ◽  
High Flexibility ◽  
The Impact

The growing requirements for limiting the negative impact of all modes of transport on the natural environment mean that clean technologies are becoming more and more important. The global trend of e-mobility also applies to sea and inland water transport. This article presents the results of experimental tests carried out on a life-size, parallel diesel-electric hybrid propulsion system. The efficiency of the propulsion system was analysed for two modes of operation (electric and diesel) and for different engine speeds and loads. Analysis of the impact of using a hybrid propulsion system on fuel consumption was carried out on a case study vessel and for six actual journeys. The use of hybrid propulsion in “zero emission” mode enables up to four times higher energy efficiency when compared to a conventional drive, while reducing CO2 emissions and air pollution to zero, as well as a hundred-fold reduction in noise emissions. High flexibility in the operation of such a drive enables the use of intelligent power control technology (smart propulsion). This article shows that the use of hybrid propulsion reduces the negative impact on the environment to a minimum and allows for a significant reduction in the vessel’s operating costs.

scholarly journals Influence evaluation of the ship propulsion system on the energy efficiency for small, medium and large container vessels

2021 ◽  
Vol 327 ◽  
pp. 02005
Author(s):  
Viktor Nikiforov ◽  
Irina Kostova
Keyword(s):  
Energy Efficiency ◽  
Maximum Energy ◽  
Propulsion System ◽  
Fuel Type ◽  
Proper Selection ◽  
Ship Propulsion ◽  
Harmful Emissions ◽  
Large Container ◽  
Marine Vessels ◽  
Selection Of

The transportation of goods worldwide has a vital meaning for the entire of humanity. The seaborne transport is considered to be the most efficient – economically and environmentally friendly way to convey large amount of goods when compared to the other transport options available. Marine vessels contribute for the carriage of about 90 percent of the worldwide trade and a significant part of the goods delivered by sea are performed by container vessels. Even considered as the most efficient way of transportation the negative aspects of the shipping should not be neglected. The fuels intended for the ship propulsion generating enormous amounts of Greenhouse gases (GHG) and harmful emissions which are directly released into the atmosphere. When it comes to Energy Efficiency of the ships, the proper selection of the propulsion system and the fuel type used are essential with regard to achieve the best values. In the current paper a diverse alternative propulsion system options in order to achieve maximum Energy Efficiency on various sizes of container vessels will be analyzed.

scholarly journals Energy Balance of a Vehicle Equipped with Hybrid Propulsion System Fuelled with Alternative Fuels

2019 ◽  
Vol 26 (4) ◽  
pp. 91-96
Author(s):  
Mirosław Karczewski ◽  
Leszek Szczęch ◽  
Filip Polak
Keyword(s):  
Alternative Fuels ◽  
Internal Combustion Engines ◽  
Power Transmission ◽  
Diesel Oil ◽  
Propulsion System ◽  
Total Efficiency ◽  
Hybrid Drive ◽  
Power Generator ◽  
Hybrid Propulsion ◽  
Hybrid Power

AbstractArticle presents the energetic balance of small-unmanned vehicle hybrid power transmission. The vehicle equipped with serial hybrid transmission consisted of electric engines connected to the battery pack and small Diesel power generator. In mentioned construction, battery is used as energy buffer and combustion engine is used more as emergency power supply, and is turned on when battery is depleted. In other condition, power generator can be turned off, without reducing power of transmission parameters, except its range. Vehicles with hybrid drive are very common chosen vehicles by users. More and more often, we also talk about searching for replacement fuels for internal combustion engines, so also for those with hybrid drive. The research was carried out on an unmanned land platform equipped with a hybrid propulsion system supplied as standard with Diesel oil. The article presents the problems of comparing the efficiency of a hybrid vehicle fuelled with Diesel oil, but also with alternative fuels based on kerosene and other components. For test, three types of fuels were used, standard Diesel oil, F-34 and with experimental mixture of Jet A-1 fuel with 10% of 2-ethylhexanol. Energy used for charging of the battery, from tank-to-wheel, was calculated. This also enables to calculate total efficiency of such hybrid power transmission, powered with different fuels.

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

2021 ◽  
Author(s):  
Ahmed G. Elkafas ◽  
Mohamed R. Shouman
Keyword(s):  
Energy Efficiency ◽  
Electric Propulsion ◽  
Phase 1 ◽  
Propulsion System ◽  
Point Of View ◽  
Emission Rates ◽  
Maritime Industry ◽  
Baseline Phase ◽  
Electric Propulsion System

Abstract 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.

Evaluating the Performances of Advanced Powertrains

Volume 2 ◽  
2004 ◽  
Author(s):  
Massimo Feola ◽  
Fabrizio Martini ◽  
Stefano Ubertini
Keyword(s):  
Fuel Consumption ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Hybrid Electric Vehicle ◽  
Hybrid Electric Vehicles ◽  
Hybrid Vehicles ◽  
Propulsion System ◽  
Road Vehicles ◽  
Hybrid Propulsion ◽  
Hybrid Electric

Over the last few decades a tremendous effort has been made to reduce road vehicles engines contribution to air pollution and fuel consumption. Due to the more stringent limits imposed by governments, various manufactures started working in the incorporation of alternative powertrain configurations, such as pure electric vehicles (EV), hybrid electric vehicles (HEV) and fuel cell vehicles (FCV), in the automotive consumer market. In order to appreciate the advantages and disadvantages of these new vehicles over conventional vehicles a comparison must be performed in terms of efficiency and pollutant emissions. However, hybrid vehicles comprise many components with at least two different energy conversion devices (i.e. internal combustion engine and electric machine) drawing energy from at least two different energy storage devices (i.e. fuel tank and battery). In recent times, many hybrid propulsion system configurations have emerged and many others can be imagined comprising multiple reversible and irreversible energy paths. Therefore, considering that in a hybrid vehicle at least two different forms of energy (i.e. fuel chemical energy and electricity) are consumed, fuel consumption alone is no more sufficient to give a measure of the effectiveness of a hybrid propulsion system. This paper presents a first attempt to give a general mathematical form of the traction energy, the global efficiency and the specific fuel consumption of a hybrid electric vehicle that recovers as particular cases the thermal vehicle and the series hybrid electric vehicle. To evaluate the efficiency of the generic propulsion system the complete process from fuel energy and electricity to power available at the wheels is considered. The introduced concept of equivalent fuel consumption can be the basis for the comparison between road vehicles whatever the powertrain is pure thermal or hybrid. In order to get a better understanding of the mathematical analysis and its potential effectiveness some numerical simulations of hybrid vehicles virtual prototypes are performed through a suitable simulation model. The aim of the present analysis is to provide an instrument that allow a quick evaluation of the performances of hybrid electric vehicles.

Experimental evaluation of a hybrid electric propulsion system for small UAVs

2019 ◽  
Vol 92 (5) ◽  
pp. 727-736
Author(s):  
Leonardo Machado ◽  
Jay Matlock ◽  
Afzal Suleman
Keyword(s):  
Fuel Consumption ◽  
Electric Propulsion ◽  
Test Bench ◽  
Combustion Engine ◽  
Propulsion System ◽  
Content Type ◽  
Hybrid Propulsion ◽  
Electric Propulsion System ◽  
Parallel Hybrid ◽  
Hybrid Electric

Purpose This paper aims to experimentally evaluate the performance of a parallel hybrid propulsion system for use in small unmanned aerial vehicles (UAVs). Design/methodology/approach The objective is to combine all the individual components of the hybrid electric propulsion system (HEPS) into a modular test bench to characterize the performance of a parallel hybrid propulsion system, and to evaluate a rule-based controller based on the ideal operating line concept for the control of the power plant. Electric motor (EM) designed to supplement the power of the internal combustion engine (ICE) to reduce the overall fuel consumption, with the supervisory controller optimizing ICE torque. Findings The EM was able to supplement the power of the ICE to reduce fuel consumption, and proved the capability of acting as a generator to recharge the batteries drawing from ICE power. Furthermore, the controller showed that it is possible to reduce the fuel consumption with a HEPS when compared to its gasoline counterpart by running simulated representative UAV missions. The findings also highlighted the challenges to build and integrate the HEPS in small UAVs. Originality/value The modularity of the test bench allows each component to be changed to assess its impact on the performance of the system. This allows for further exploration and improvements of the HEPS in a controlled environment.

scholarly journals Multi-source-supplied parallel hybrid propulsion of the inland passenger ship STA.H. Research work on energy efficiency of a hybrid propulsion system operating in the electric motor drive mode

2013 ◽  
Vol 20 (3) ◽  
pp. 20-27 ◽  
Author(s):  
Jakub Kowalski ◽  
Wojciech Leśniewski ◽  
Wojciech Litwin
Keyword(s):  
Energy Efficiency ◽  
Electric Motor ◽  
Propulsion System ◽  
Motor Drive ◽  
Ocean Engineering ◽  
Drive Mode ◽  
Hybrid Propulsion ◽  
Parallel Hybrid ◽  
Electric Motor Drive ◽  
System Operating

Abstract In the Faculty of Ocean Engineering and Ship Technology, Gdansk University of Technology, design has recently been developed of a small inland ship with hybrid propulsion and supply system. The ship will be propelled by a specially designed so called parallel hybrid propulsion system. The work was aimed at carrying out the energy efficiency analysis of a hybrid propulsion system operating in the electric motor drive mode and at performing the noise pollution measurements. The performed investigations have shown that a significant impact on the efficiency and on the acoustic emission has the type of belt transmission applied.

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