Analiysis of propulsion for various types of ships in aspects of power required and fuel consumption during exploitation

• Autorzy: Charchalis A.

Identyfikatory

DOI

10.5604/12314005.1168432

• Języki publikacji: EN

Abstrakty

EN

The paper presents comparative analysis of energetic possibilities of different ships with close parameters of displacement and operational ailing range, for selected type of main engine. Analysis is related to three types of ships, i.e. bulk carrier, tanker and container ship, with assumed displacement at level of 120 000DWT and typical for that ships sailing speed. The analysis concerns shipping route from Gdynia to Shanghai. First step of conducted analysis was based on elaboration of the list of contemporary similar ships for every class, their general dimensions, dimensional coefficients, and subsequently evaluation of hulls resistances using Holtrop – Mennen Method necessary for calculation of propulsive power, main engines’ selection, most convenient for every type of ship and calculation of trips durations and fuel consumptions. All calculations were done assuming typical cruising speed for considered types of ships, it means 25 knots for container ships and 15 knots for tankers and bulkers. Results of carried out calculations lets come to the conclusion that total time of trip duration of container ship is 1.5 times shorter and fuel consumption is 2.5 times higher comparing with tankers and bulk carriers going on the same trip. Taking under consideration constantly growing prices of heavy oil, that situation is inconvenient from economical point of view. Above facts explains general trend to reduce speed of container ships presented by almost all shipping companies. The way of speed’s reduction is decreasing of continuous power rate of main engine, what is related to necessity of blinding or dismounting some numbers of turbochargers. Hypothetic example of such operation and its impact at operational properties were analysed, and results showed, that exploitation parameters of the container ship begun closer to bulk carriers and tankers but could not achieve proper level of efficacy due to not optimal hull shape and engine characteristic.

Słowa kluczowe

EN

shipbuilding; calculation of propulsive marine power; hulls resistances of ship; diesel engines

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2015
• Tom: Vol. 22, No. 4
• Strony: 53--57
• Opis fizyczny: Bibliogr. 9 poz., tab.

Twórcy

autor

Charchalis A.

• Gdynia Maritime University, Faculty of Marine Engineering Morska Street 83, 81-225 Gdynia, Poland

Bibliografia

• [1] Carlton, J. S., Marine propellers and propulsion, Oxford, Butterworth-Heinemann, Elsevier, 2007.
• [2] Charchalis, A., Opory okrętów wojennych i pędniki okrętowe, AkademiaMarynarkiWojennej, Gdynia 2001.
• [3] Charchalis, A, Kreft, J., Development trends in contemporary container vessels designs, Jurnal of KONES Powertrain and Transport, Vol. 15, No. 4, 2008.
• [4] Charchalis, A., Dimensional constraints in ship designe, Jurnal of KONES Powertrain and Transport, Vol. 20, No. 2, 2013.
• [5] Charchalis, A., Designing constraints in evolution of ship propulsion power, Journal of KONES Powertrain and Transport, Vol. 20, No. 1, 2013.
• [6] Michalski, J. P., Podstawy teorii projektowania okrętów, Wydawnictwo Politechniki Gdańskiej, Gdańsk 2013.
• [7] Molland, A. F., The Maritime Engineering Reference Book: A Guide to Ship Design, Construction and Operation, Oxford [etc.], Butterworth-Heinemann, cop. 2008.
• [8] Significant Ships of 1993-2009, A Publication of the Royal Institution of Naval Architects.
• [9] Urbański, P., Podstawy napędu statków, Fundacja Rozwoju Akademii Morskiej w Gdyni, Gdynia 2005.