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    Wyświetlanie 1-7 z 7
    Tytuł:
    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
    Autorzy:
    Kowalski, J.
    Leśniewski, W.
    Litwin, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/259623.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    hybrid ship propulsion
    ship propulsion
    Opis:
    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.
    Źródło:
    Polish Maritime Research; 2013, 3; 20-27
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Energy efficient small inland passenger shuttle ferry with hybrid propulsion - concept design, calculations and model tests
    Autorzy:
    Kunicka, Magdalena
    Litwin, Wojciech
    Powiązania:
    https://bibliotekanauki.pl/articles/259786.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    ship hybrid propulsion
    energy efficiency
    green shipping
    energy management
    Opis:
    In recent years, there has been a significant development in “green” and energy efficient propulsion systems, which fits into the general trend of environmentally friendly “green shipping”. The pursued goal is to construct a safe passenger ship that is low in energy demand and equipped with a highly energy efficient, emission-free propulsion system. The paper presents main problems encountered by designers of a small, hybrid-powered ferry powered lithium batteries. The conducted research allowed to create a design of an energy efficient hull shape, which decreases the demand for energy. Completed remote control model tests resulted in a proposal of an energy efficient and safe propulsion system with good manoeuvring capabilities. Measurements completed on an existing ferry permitted completing energy balance and forming an energy management policy. The paper contains the emission calculations computed for the existing ferry that are necessary for the environmental impact analysis. The soon to be constructed, newly designed vessel will provide a valuable contribution to hybrid-propulsion, energy management and unmanned technologies research.
    Źródło:
    Polish Maritime Research; 2019, 2; 85-92
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rozwój technologii siłowni okrętowych u progu XXI wieku
    Development of Ship Propulsion Plants at the Entry into the XXI Century
    Autorzy:
    Listewnik, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/906520.pdf
    Data publikacji:
    2005
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    turbiny gazow
    hybrydowe systemy siłowni okrętowych
    nadprzewodnikowe silniki elektryczne
    gas turbines
    ship propulsion hybrid systems
    superconductivity electric motors
    Opis:
    Artykuł określa kierunki rozwoju siłowni okrętowej po 2000 roku, analizując możliwości szerokiego zastosowania turbin gazowych do napędu statków oraz rozwój rozwiązań układów siłowni podyktowany względami bezpieczeństwa i ochrony środowiska morskiego. W ostatnim rozdziale opisano, planowane w połowie 2006 roku przez japoński koncern IHI, wprowadzenie do eksploatacji silnika elektrycznego pracującego w zakresie nadprzewodnictwa. Omówiono charakterystyczne cechy tego epokowego dokonania.
    The paper points out ways of ship propulsion developments after the year 2000, analysing the possibilities of gas turbine application for ship's propulsion, as well as the design of propulsion plants systems fulfilling safety and marine environmental aspects. The last chapter of the paper gives a general description of the introduction into the operation of an electrical motor working in the range of superconductivity by the Japanese Co. IHI. A brief characteristics of this epoch-making achievement is made.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2005, 7 (79); 77-90
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Energy efficient and environmentally friendly hybrid conversion of inland passenger vessel
    Autorzy:
    Litwin, W.
    Leśniewski, W.
    Kowalski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/259006.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    ship propulsion
    hybrid propulsion
    green shipping
    zero emission
    solar power
    Opis:
    The development and growing availability of modern technologies, along with more and more severe environment protection standards which frequently take a form of legal regulations, are the reason why attempts are made to find a quiet and economical propulsion system not only for newly built watercraft units, but also for modernised ones. Correct selection of the propulsion and supply system for a given vessel affects significantly not only the energy efficiency of the propulsions system but also the environment – as this selection is crucial for the noise and exhaust emission levels. The paper presents results of experimental examination of ship power demand performed on a historic passenger ship of 25 m in length. Two variants, referred to as serial and parallel hybrid propulsion systems, were examined with respect to the maximum length of the single-day route covered by the ship. The recorded power demands and environmental impact were compared with those characteristic for the already installed conventional propulsion system. Taking into account a high safety level expected to be ensured on a passenger ship, the serial hybrid system was based on two electric motors working in parallel and supplied from two separate sets of batteries. This solution ensures higher reliability, along with relatively high energy efficiency. The results of the performed examination have revealed that the serial propulsion system is the least harmful to the environment, but its investment cost is the highest. In this context, the optimum solution for the ship owner seems to be a parallel hybrid system of diesel-electric type.
    Źródło:
    Polish Maritime Research; 2017, 4; 77-84
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design methodology for small passenger ships on the example of the ferryboat Motława 2 driven by hybrid propulsion system
    Autorzy:
    Gełesz, P.
    Karczewski, A.
    Kozak, J.
    Litwin, W.
    Piątek, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/259617.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    small passenger ships
    urban ship
    design methodology
    hybrid propulsion system
    Opis:
    Dynamic development in practically all fields of science and engineering has not passed over shipbuilding . In last years, engineers got to their use computer software which makes it possible to perform strength and hydrodynamic calculations as well as to visualize design projects in 3 D space [1-4]. At their disposal they have full spectrum of modern solutions associated with the use of advanced materials and technologies [5-7]. More and more attention is also paid to impact onto the natural environment [8,9]. Every new object must influence the environment as low as possible, beginning from building phase through its service life up to final utilization – such approach is called „green-shipping”. However , not only practical reasons are important . Clients , i.e. ship owners and passengers of ships paid more and more attention to image of floating units. During decision taking on that from whom a transport service has to be ordered , the most modern ships of an attractive image matching with place and time, are often taken into consideration. Such situation has become a basis for an idea of working out a concept of a new ferryboat for National Maritime Museum. As the ferry has to navigate in „the heart of the town”, then , apart from strictly marine and engineering aspects , an important factor of its designing is its expected image - a set of significant meanings and emotions written in architecture language. The new ferryboat , like its historical predecessors , will never leave urban water routes.
    Źródło:
    Polish Maritime Research; 2017, S 1; 67-73
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reliability evaluation of electrochemical energy storage systems supplying the ships main propulsion system
    Autorzy:
    Szewczyk, P.
    Łebkowski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201455.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    reliability assessment
    electric propulsion system
    energy storage systems
    electric ship
    reliability block diagram
    probability of failure occurrence
    hybrid electric-propulsion system
    Opis:
    The paper presents the structure of hybrid and electric modern ship propulsion systems. Types and configuration of electrochemical cells for selected electric energy storage facilities on the ship were presented. The method and results of reliability analyses, such as failure mode effect analysis (FMEA), reliability block diagram (RBD) and fault tree analysis (FTA), used to estimate the probability of failure of the energy storage systems supplying the ship's main propulsion, are presented. Methods of evaluation and verification of the proposed reliability model using a laboratory model and available operational and service data are discussed. A proposal for a quantitative risk analysis of potential damage during the operation of the energy storage has been presented.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 1; 87--94
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measures for estimating transport vessels operators subjective preferences uncertainty
    Autorzy:
    Goncharenko, A. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/213181.pdf
    Data publikacji:
    2013
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
    Tematy:
    pseudo-entropy
    hybrid model
    subjective analysis
    prevailing preferences factor
    dominating preferences index
    ship propulsion
    main engine
    subjective preferences functions
    multialternative situations
    Opis:
    The pseudo-entropy hybrid model is suggested as the measure of uncertainty of operators' subjective preferences. Because of the introduced relative prevailing preferences factor the proposed hybrid model has advantages comparatively to the traditional measures of uncertainty in the view of Boltzmann's or Shannon 's entropy. According to the relative dominating preferences index the pseudo-entropy varies within [-1...1] showing the sign and magnitude of the relative subjective assuredness. Analytical expressions have been achieved. The theoretical concept is illustrated with examples and graphs.
    Źródło:
    Prace Instytutu Lotnictwa; 2013, 1 (228); 13-21
    0509-6669
    2300-5408
    Pojawia się w:
    Prace Instytutu Lotnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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