Temat: ship propulsion - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Charging station location optimization of electric ship based on backup coverage model
Autorzy:: Zhang, W.
Yan, X.
Zhang, D.
Powiązania:: https://bibliotekanauki.pl/articles/117632.pdf
Data publikacji:: 2017
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: main engine
ship propulsion
charging station
electric ship
backup coverage model
electric ship energy
electric energy supply
ship charging station
Opis:: In terms of electric ship energy requirement in navigation, the ship charging station location is especially important. In this paper, a multi-period ship charging station location optimization model is pro-posed to make location decision in overall, from initial possible station sites chosen to the capacity determination for the final location sites. In the first phase, from the perspective of external environment, find out all possible ship charging station candidate sites through the feasible analyze. In the second phase, taking the ship charging demands into consideration, the final ship charging station sites can be selected among the candidate sites based on backup coverage model. In the last phase, regarding the cost of construction and service capability for different grade as the main factor in capacity determination, the optimal capacity of each final ship charging station are determined by means of optimization method. Finally, an example of Yanqi lake in China is used to verify the validity of the proposed methodology. The reasonable location of charging station could ensure the electric energy supply and avoid congestion caused by ship charging gathering. The model can be easily generalized to other problems regarding facility allocation based on user demand.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 2; 323-327
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The microprocessor device for measurements of torque and rotational speed on the propeller shaft of ship
Urządzenie do pomiaru momentu i prędkości obrotowej na wale śruby napędowej statku
Autorzy:: Morawski, L.
Szuca, Z.
Powiązania:: https://bibliotekanauki.pl/articles/158019.pdf
Data publikacji:: 2007
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: okrętowy układ napędowy
silnik napędu głównego
pomiar momentu
momentomierz
ship's propulsion unit
main engine
torquemeter
Opis:: The paper presents the new model of torque meter designed in Gdynia Maritime University and Research-Production Enterprise for Maritime Industry "ENAMOR" Ltd., Gdynia. The general idea of measurement makes use of the torsion angle measured on a shaft section (400 mm) using the photo-optical technique. Torque meter unit is equipped with Programmable Logic Device (PLC) for calculations, external parameters acquisition (ex.: speed, trim, shaft generator power etc.) and measured data storage in memory. This unit (bearing a symbol ETNP-8) has also possibility to measure instantaneous fluctuations of the torque and engine rotational speed as a function of the shaft rotation angle. Displaying time-histories of those parameters on the monitor screen of an external PC computer gives the operator an opportunity to make a preliminary performance assessment for each individual cylinder in the engine, and for the drive system as a whole. As an example, the analysis and processing of the measured torque and rotational speed fluctuations are presented. The measurements were done on the training ship m/s Horyzont II, owned by the Gdynia Maritime University.
Referat przedstawia urządzenie do pomiaru momentu i prędkości kątowej na wale śruby, wykorzystujące fotooptyczny pomiar kąta skręcenia wału. Na podstawie mierzonych czasów trwania zębów i szczelin dwóch tarczy zębowych wyznaczana jest prędkość obrotowa, moment i moc na wale oraz teoretyczne zużycie paliwa. Dołączony do urządzenia zewnętrzny komputer PC, z odpowiednim oprogramowaniem umożliwia pomiar wartości chwilowych momentu i prędkości obrotowej w funkcji kąta położenia wału korbowego. Pomiary wartości chwilowych zawierają informację diagnostyczną o pracy układu napędowego statku.
Źródło:: Pomiary Automatyka Kontrola; 2007, R. 53, nr 12, 12; 5-7
0032-4140
Pojawia się w:: Pomiary Automatyka Kontrola
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The increase of operational safety of ships by improving diagnostic methods for marine diesel engine
Autorzy:: Witkowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/117520.pdf
Data publikacji:: 2017
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: diagnostic methods
marine diesel engine
main engine
ship propulsion
operational safety
injection system
damage
fuel oil
Opis:: This article shows the importance of the diagnostic improvement methods of marine engines to boost the economy and safety of operation of marine cargo ships. The need to implement effective diagnostic methods is justified by presenting statistical data of marine diesel engines failure and the cost of their operation. Based on the own research has been proven, for the chosen example, that indicator diagrams and analysis of indicated parameters have limited utility in the diagnosis of damages of marine engine, although this is a method commonly used in operational practice. To achieve greater diagnostic effectiveness, when, based on indicator diagrams, are calculated and then the characteristics of heat release is analyzed - net of heat release characteristics and the intensity of the heat release, it was demonstrated. This procedure is particularly effective in the diagnosis of damage of injection system components marine diesel engine.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 2; 317-321
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

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

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