Integrated power systems in small passenger ships (original) (raw)
Related papers
2013
This paper deals with the application of integrated power systems in small passenger ships. Namely, integrated power systems were up to now mostly used in naval and large passenger ships, primarily for financial reasons. However, despite their complexity, such systems allow for much more versatility and their application in small passenger ships seems to be advisable in the context of environmental issues. Environmental aspects of maritime transportation are discussed, the needs for environmentally-friendly ships in the Adriatic Sea are elaborated and a review of actual IMO Regulations is provided, pointing out the effects of introducing new fuel-efficient and electrified ships. Different power systems of a ferry operating in the Adriatic Sea are analyzed in detail, with particular emphasis on gas emissions. Direct mechanical propulsion system and integrated power system in real operating conditions are considered and some advantages and drawbacks of both are examined. Finally, disc...
Electrification of Inland Waterway Ships Considering Power System Lifetime Emissions and Costs
Energies, 2021
This paper deals with the applicability of alternative power system configurations to reduce the environmental footprint of inland waterway ships. Its original contribution includes: models for assessment of the lifetime emissions and associated lifetime costs of alternative power system configurations for different types of inland waterway vessels, identification of the most cost-effective options for these vessels, and an estimation of the impact of emission policies on the profitability of each option. The case study considers the Croatian inland waterway sector, where three types of vessel with significantly different purposes, designs, and operative profiles are considered (cargo ship, passenger ship, and dredger). The technical and operational features of these ships are analyzed with an emphasis on their energy needs. Then, life-cycle assessments (LCAs) of a diesel engine-powered ship configuration and two battery-powered ship configurations (with and without a photovoltaic s...
Proposed Hybrid Power System for Short Route Ferries
Naše more, 2020
A fractional fuel consumption saving as well as pollution cuts will be a thinking pattern or a key concern in modern ship designs. Recent advances in technology for solar cells and photovoltaic (PV) modules have resulted in solar power being a cost-eff ective fuel reduction alternative for this objective. This paper is intended to provide a hybrid solar diesel power system for short-run ferries. This work proposes and emphasizes the energy effi ciency, cost effi ciency and minimal environmental impact of hybrid-powered ferries with solar diesel. The proposed system has been studied on the example of passenger-car ferry connecting the two banks of the Suez Canal at Port Said city-Egypt. Economic and environmental analyses have been conducted to determine and measure the advantages of the proposed system. The results show an economically viable and environmentally sustainable system if it were treated as a long-term investment. Compared to the equivalent diesel generator system, this system reduces exhaust emissions by about 375 tonnes per year. The fuel cost savings achieved are also signifi cant. Sažetak Bilo kakva ušteda u potrošnji goriva i smanjenje zagađenja predstavljat će temelj za promišljanje ili najvažniji problem u dizajnu brodova. Novija tehnološka otkrića u području solarnih ćelija i fotonaponskih (PV) modula dovela su do toga da je solarna energija postala alternativa u smislu ekonomičnog smanjenja potrošnje goriva. U ovome radu predlaže se hibridni dizelski pogonski sustav na solarnu energiju za trajekte na kraćim rutama. U radu predlaže se i ističe energetska učinkovitost, ekonomičnost i najmanji utjecaj na okoliš trajekata na solarni dizelski hibridni pogon. Istraživanje predloženog sustava provedeno je na trajektu za prijevoz putnika i vozila koji povezuje dvije obale Sueskog kanala u gradu Port Said (Egipat). Provedene su ekonomske analize i analize utjecaja na okoliš da bi se utvrdile i izmjerile prednosti predloženoga sustava. Rezultati pokazuju da je sustav ekonomski izvediv i u skladu s održivosti okoliša ako se tretira kao dugoročno ulaganje. U usporedbi s dizelskim generatorskim sustavom, ovaj sustav smanjuje emisiju ispušnih plinova za oko 375 tona godišnje. Uštede na troškovima potrošnje goriva također su značajne.
RATIONALE FOR THE NEED TO USE ADDITIONAL ENERGY SOURCES IN SHIP ELECTRIC
2020
The paper shows that the existing ship power systems operate in a dynamic mode. Loads are random. Examples of accidental loads on the ship's power system are given. It is shown that ships need to improve energy systems. An effective way to increase the efficiency of energy systems is to install an additional source of electricity. Keywords: diesel generator, energy source, load.
Towards Ferry Electrification in the Maritime Sector
Energies
The electrification of vessels/ferries for green transformation requires onboard electrical energy storage as well as an energy supply network in the port area. In this context, a lot of efforts have been made in the last decade that have been reviewed in such a way that only a single aspect of the green transformation challenge is highlighted. Consequently, the objective of this research is to develop knowledge by examining the current state of affairs and provide, accordingly, abstract implementation guidelines for green transformation through vessel/ferry electrification. A comprehensive study on the electrification of vessels, in industry as well as in academia, is performed. Based on the data collected through a systematic study, a comparison of various pure electric and hybrid vessels in terms of certain performance attributes, such as battery capacity, passenger and cargo capacities, and size (length) of the vessel, is performed. Moreover, the distribution of vessels accordin...
Power plant-related Measures for Improving Energy Efficiency in Ships.pdf
2015
At present, the shipping industry is facing two major challenges: the unstable prices of fuel oil and the tightening of international regulations on pollution and CO2 emissions. Despite the fact that marine transportation is more energy efficient as compared to land and air transportation, there is still room for improvement. These challenges can be met by reducing fuel consumption or by using alternative eco-friendly energy sources. There is a great number of technical and operational solutions to meet these challenges, which can be applied to both newly constructed and existing vessels. Due to the great range of available energy-efficiency solutions, the current paper focuses on the measures related to the power plant of a ship. As such, the measures analyzed can be divided into two main groups, beginning with diesel engines and other auxiliary machinery, such as waste heat recovery systems. Secondly, the fuels used by these engines as well as the various alternatives that can be used to power a ship are also explored. Some of these fuels, although not more economical than conventional ones, have a significantly lower pollution impact and future potential, and are thus examined as well.
Feasibility Assessment of Alternative Clean Power Systems onboard Passenger Short-Distance Ferry
Journal of Marine Science and Engineering
In order to promote low-carbon fuels such as hydrogen to decarbonize the maritime sector, it is crucial to promote clean fuels and zero-emission propulsion systems in demonstrative projects and to showcase innovative technologies such as fuel cells in vessels operating in local public transport that could increase general audience acceptability thanks to their showcase potential. In this study, a short sea journey ferry used in the port of Genova as a public transport vehicle is analyzed to evaluate a ”zero emission propulsion” retrofitting process. In the paper, different types of solutions (batteries, proton exchange membrane fuel cell (PEMFC), solid oxide fuel cell (SOFC)) and fuels (hydrogen, ammonia, natural gas, and methanol) are investigated to identify the most feasible technology to be implemented onboard according to different aspects: ferry daily journey and scheduling, available volumes and spaces, propulsion power needs, energy storage/fuel tank capacity needed, economi...
Analy sis of container ship energy systems
International Journal of Energy Production and Management
Nowadays energy efficiency is a global concern for the maritime organization and business. Rising operating costs, mainly fuel prices and stricter environmental regulations are forcing the shipping industry to find more effective ways of designing and operating the ships in an energy-efficient manner. An analysis of the energy system of ships and understanding the different energy flows can contribute to better energy management and efficiency in the ships. Keeping this objective in mind, the energy systems of typical medium-sized container ships are analysed in this paper based on the vessel's operating data and equipment parameters collected by the crew over three months. The study focuses on the energy and exergy balances of the main components. It has been shown that more than 80% of total energy consumption is caused by the propulsion plant, while the electric power generation accounts for 14-17%. Up to 60% of the energy supply is lost to the environment through the cooling system, radiation, friction and exhaust from diesel engines. Exergy losses caused by the exhaust gas and heat transfer are other contributors. Roughly 6% of the fuel exergy input is lost due to heat transfer. The exergy lost through the exhaust gas flue mainly from the main engine is estimated at 12% of the total exergy input. There is considerable potential for waste heat recovery on container vessels. However, to improve the overall energy efficiency, a techno-economic study has to be carried out on waste heat recovery solutions for each category of vessels and trading mode.