Autor: Litwin, Wojciech - Katalog OPAC zbiorów

Skocz do pozycji: 1.

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

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Skocz do pozycji: 2.

Tytuł:: Human resource management digitalisation in multidisciplinary ship design companies
Autorzy:: Bilon, Piotr
Litwin, Wojciech
Powiązania:: https://bibliotekanauki.pl/articles/34603961.pdf
Data publikacji:: 2023
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: ship design human resource management
digital automation
project portfolio
multidisciplinary engineering
ship design
marine engineering
Opis:: The digitalisation in the ship design sector is currently applied to the design process itself and is well defined, partially standardised and practically implemented by both independent design companies and the design departments of shipyards. The situation is similar in other sectors of engineering. However, the requirements for the digitalisation of other processes in design and engineering companies have not previously been studied, and the limited financial resources of ship design companies mean that there is a need for research on the digitalisation needs of multidisciplinary ship design companies. The implementation of building information modelling (BIM) solutions is costly for design companies and generates benefits mainly for shipyards and shipowners. The lack of benefits for design companies leads to the hesitation of managers whenever digitalisation is considered; the scope and scale of the digitalisation, as well as the selected software and BIM level, are defined by the shipyard requirements. The participation and support of management in the digitalisation process is one of the key success factors; the expected benefits caused by digitalisation for the organisation will increase the motivation of managers to invest limited resources in digitalisation. There are no data that indicate the processes with a high potential for digitalisation and the scale of expected improvements in ship design companies; therefore, research in this area was performed with a group of project managers from design and engineering companies. The research focused on collecting the opinions and experiences of the managers related to the manual management of resources and comparing the poll results with the conclusions from the enterprise resource planning (ERP) system data analyses. The paper analyses if the digital automation of the resource management process can lead to the substantial improvement of the operations of multi-project, multidisciplinary engineering ship design companies.
Źródło:: Polish Maritime Research; 2023, 4; 120-128
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Selected problems of experimental testing marine stern tube bearings
Autorzy:: Barszczewska, Agnieszka
Piątkowska, Ewa
Litwin, Wojciech
Powiązania:: https://bibliotekanauki.pl/articles/260219.pdf
Data publikacji:: 2019
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: marine bearings
polymer journal bearings
tribology
real scale test
Opis:: This paper presents typical methods for conducting experimental tests on main shaft slide bearings. There are described their possible testing capabilities , advantages , drawbacks and limitations. Various testing methods were analyzed to find a solution able of providing a wide range of possible investigations at possibly acceptable limitations.
Źródło:: Polish Maritime Research; 2019, 2; 142-154
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Sail catamaran with hybrid propulsion, design, theoretical and experimental studies
Autorzy:: Litwin, Wojciech
Piątek, Daniel
Leśniewski, Wojciech
Marszałkowski, Konrad
Powiązania:: https://bibliotekanauki.pl/articles/32900237.pdf
Data publikacji:: 2022
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: sail catamaran
green shipping
zero emission
hybrid propulsion
Opis:: The development of modern lithium batteries and propulsion systems now allows the use of complex propulsion systems for vessels of various sizes. As part of the research and implementation project, a parallel hybrid drive system was designed, built and then tested in the laboratory. The experimental studies conducted allowed for the measurements of power, fuel consumption and electric power distribution in various operating modes of the propulsion system. The research proves that in the analysed case, the hybrid parallel system meets the demand for electric energy during a typical cruise scenario, and thus there is no need to install a power generator on the yacht.
Źródło:: Polish Maritime Research; 2022, 2; 12-18
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki