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Wyświetlanie 1-15 z 35
Tytuł:
Management of assignment of operational tasks realized in ship power plant
Autorzy:
Kamiński, P.
Tarełko, W.
Powiązania:
https://bibliotekanauki.pl/articles/258526.pdf
Data publikacji:
2008
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship power plant
management
Opis:
The frequent cause of ships’ detentions by port authorities are abnormalities of ship power plant functioning. Each extended ship lay time in port results in waste of ship operating time thus costs rise to shipowners. This is connected with improper ship power plant management. In order to avoid this, a ship engineer should have at his disposal computer aided system supporting him in managing of ship power plant. Such a system can be worked out on condition that mathematical formula which represents the decision – making process of an engineer has been built. The present work shows approache to the problem according to the situation in which the engineer is made to take certain decisions. In formulation of the most substantial operating states of a ship like lay time in harbour and sea voyage the ‚knapsack algorithm’ was applied. For both approaches objective function was formulated.
Źródło:
Polish Maritime Research; 2008, 1; 42-51
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Economical analysis of selected variants of power plant for inland waterways passenger ship intended for operating on Berlin - Kaliningrad route
Autorzy:
Bocheński, D.
Powiązania:
https://bibliotekanauki.pl/articles/260439.pdf
Data publikacji:
2006
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
inland waterways passenger ship
ship power plant
ship propulsion systems
Opis:
This paper contains an economical analysis of three selected variants of power plant for inland waterways passenger ship intended for operating on Berlin-Kaliningrad route. Purchase cost of elements of the ship’s energy system and fuel consumption cost were assumed as the assessment criterion for the analyzed variants of the ship’s power plant. The economical indices : Average Annual Cost (AAC) and Net Present Value (NPV) were taken into consideration.
Źródło:
Polish Maritime Research; 2006, S 2; 47-51
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Two design concepts of power plant for an inland waterways passenger ship intended for operating on BERLIN – KALININGRAD route
Autorzy:
Bocheński, D.
Rudnicki, J.
Powiązania:
https://bibliotekanauki.pl/articles/260447.pdf
Data publikacji:
2006
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
inland waterways passenger ship
ship power plant
ship propulsion systems
Opis:
This paper presents two most probable design solutions of power plant for a two-segment passenger ship intended for operating on inland waterways of Poland, Germany and Russia. Preliminary designs of the main power plant to be installed on the pusher are presented, as well as requirements for the auxiliary power plant to be placed on the barge are outlined.
Źródło:
Polish Maritime Research; 2006, S 2; 52-56
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of fuzzy inference to assessment of degree of hazard to ship power plant operator
Autorzy:
Kowalewski, T.
Podsiadło, A.
Tarełko, W.
Powiązania:
https://bibliotekanauki.pl/articles/259595.pdf
Data publikacji:
2007
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
safety
operator
ship power plant
assessment
fuzzy inference
Opis:
This paper presents application of fuzzy logic to assessment of degree of hazard to ship power plant operator. For the assessment a system of computer-aided identification of hazardous zone within ship power plant, was used. The system’s variables representing the subject-matter knowledge in safety design area were transformed into fuzzy sets by means of appropriate linguistic variables and membership functions. The assessing of safety level of operator with the use of fuzzy inference was performed by means of an expert system programmed in the PROLOG LPA language.
Źródło:
Polish Maritime Research; 2007, 3; 7-11
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assesment of operation of ship main diesel engine using the theory of semi-Markovian and Markov processes
Autorzy:
Rudnicki, J.
Powiązania:
https://bibliotekanauki.pl/articles/245616.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
operations
ship power plant
diesel engine
semi-Markov processes
Opis:
Operation of ship propulsion system is associated with realization of definite operational goals. If to elements of the system the operational reliability strategy could be applied, the situation would be very simple as existing conditions would unambiguously determine application of means being on hand. However decision to reject application of the strategy (even if hypothetical) becomes obvious with a view of necessity of ensuring an acceptable level of safety to ship and environment as well as presence of associated formal and legal limitations. Therefore complexity of operational reality makes that means intended for operation may be used in various ways. Objectivity and rationality in making decision, assumed optimal in given conditions, forces to apply an evaluating (quantitative) approach to the problem, hence to search for such their parameters (indices) which, in a given decision situation, can be deemed most adequate. To precisely determine the task it is necessary to specify also its duration time, apart from conditions in which it will be realized. When considering propulsion engine, i.e. the main element of ship propulsion system, especially important becomes not only the problem which amount of energy could be at one's disposal but also within which time interval it could be delivered. Therefore apart from applying the commonly used reliability indices, it seems sensible to consider the operation in such evaluating approach as it could be determined by energy and time simultaneously.
Źródło:
Journal of KONES; 2009, 16, 3; 325-333
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A probabilistic model of environmental safety of ship power plant
Autorzy:
Liberacki, R.
Powiązania:
https://bibliotekanauki.pl/articles/962809.pdf
Data publikacji:
2004
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
environment protection
environment safety
risk
reliability
ship power plant
Opis:
In the paper a probabilistic model of environmental risk of ship power plant is presented. This is a linear strategy model with an additional restraint. It can be usedfor assessing risk to marine environment, which results from ship power plant operation. The risk is a sum of component probabilities of exceedance of the limits assigned - by MARPOL convention to particular kinds of pollution discharged from ships, multiplied by weight factors. The factors determine a degree of harmfulness of a discharge for the environment. The restraint concerns the case of exceedance of the limits assumed unacceptable by the convention. A risk value is be contained within (0,1) interval. Moreover a criterion for environmental safety of ship power plant was propsed. This is the criterion of the ALARP class, in which an intolerable risk level and acceptable one is distinguished. Suggestions concerning determination of the levels are submitted. The considerations are illustrated by results of example computer investigations of influence of reliability oftechnical elements of the systems responsible for environmental safety of a hypothetical ship power plant on environmental risk value. Three qualification levels of ship:s. crew were accounted for: high, average and low.
Źródło:
Polish Maritime Research; 2004, S 1; 62-66
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Redundancy as a way increasing reliability of ship power plants
Autorzy:
Tarelko, W.
Powiązania:
https://bibliotekanauki.pl/articles/27315952.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
redundancja
niezawodność
elektrownia okrętowa
redundancy
dependability
ship power plant
Opis:
One of key ways of assuring a high level of reliability of a ship power plant is to design redundancy of its structural elements, for example redundancy of prime drivers, drivelines etc. This paper deals with issues related to the redundancy as a way increasing dependability of the ship power and propulsion systems. Especially, fundamental characteristics of dependability, major design strategies influencing the reliability, and types of redundancies related to ship power and propulsion systems are presented.
Źródło:
New Trends in Production Engineering; 2018, 1, 1; 515-522
2545-2843
Pojawia się w:
New Trends in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Engine cadets with and without additional training on training vessel : competences comparison case study
Autorzy:
Kamiński, Piotr
Charchalis, Adam
Powiązania:
https://bibliotekanauki.pl/articles/247144.pdf
Data publikacji:
2019
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
ship power plant
watch engineer training
marine engineer competences
Opis:
In the last decade evolution of the requirements for training and professional competences of ship’s crewmembers, including ship engineers can be observed. Despite the implementation of training programs according to IMO requirements in maritime training centres, a different level of competence of young people beginning their professional career on ships in the engine department is observed. The article discusses general conventions, goals, and effects of the "BS Cadet Program" training program, introduced by one of the larger German ship-owner to improve the competencies of crewmembers at the operational level, who will take duties of the watch engineer in the ship engine room soon. General idea of this training program is reducing the time of the path career what is a standard in most shipping companies. Such idea in this program is utilised by directly merging theoretical knowledge with professional practice on special prepared training vessel. The work present also comparison of the acquired knowledge verification results of training participants with the results of engine cadets from last semester of the UMG Faculty of Engineering. The comparison includes computer exercises of Marine equipment and machineries (UNITEST Company – CBT) also genera ship and engine room knowledge checked by written test called “Final Test” carried out on the end of 3 months training.
Źródło:
Journal of KONES; 2019, 26, 3; 61-68
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of hazard to operator during design process of safe ship power plant
Autorzy:
Kowalewski, T.
Podsiadło, A.
Tarełko, W.
Powiązania:
https://bibliotekanauki.pl/articles/259383.pdf
Data publikacji:
2010
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
safety
design process
ship power plant
hazard
fuzzy inference
Opis:
This paper presents comparison of two methods for assessment of hazards to ship power plant operator, used in the preliminary stage of ship power plant design process: the matrix method and that based on fuzzy logic. And, it reports this way results of realization of the research projects [1, 2] financed by Polish Ministry of Science and Higher Education.The assessment of hazard to ship power plant operator, carried out at preliminary design stages meets certain difficulties resulting from that information connected with his safety are scarce or associated with high uncertainty. Therefore fuzzy logic was decided to be used to safety assesment. It was found out that at preliminary design stages application of the fuzzy-logic-based assessment yielded better results as compared with the classic matrix method.
Źródło:
Polish Maritime Research; 2010, 4; 26-30
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exploration of a model thermoacoustic turbogenerator with a bidirectional turbine
Autorzy:
Korobko, Volodymyr
Serbin, Serhiy
Le, Huu Cuong
Powiązania:
https://bibliotekanauki.pl/articles/34604689.pdf
Data publikacji:
2023
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
waste heat recovery
ship power plant
thermoacoustics
thermoacoustic engine
bidirectional turbine
Opis:
The utilisation of the thermal emissions of modern ship power plants requires the development and implementation of essentially new methods of using low-temperature waste heat. Thermoacoustic technologies are able to effectively use lowtemperature and cryogenic heat resources with a potential difference of 500–111 K. Thermoacoustic heat machines (TAHMs) are characterised by high reliability, simplicity and environmental safety. The wide implementation of thermoacoustic energy-saving systems is hampered by the low specific power and the difficulties of directly producing mechanical work. An efficient approach to converting acoustic energy into mechanical work entails the utilisation of axial pulse bidirectional turbines within thermoacoustic heat engines. These thermoacoustic turbogenerators represent comprehensive systems that consist of thermoacoustic primary movers with an electric generator actuated by an axial-pulse bidirectional turbine. The development of such a thermoacoustic turbogenerator requires several fundamental issues to be solved. For this purpose, a suitable experimental setup and a 3D computational fluid dynamics (CFD) model of a thermoacoustic engine (TAE) with bidirectional turbines were created. The research program involved conducting physical experiments and the CFD modelling of processes in a TAE resonator with an installed bidirectional turbine. The boundary and initial conditions for CFD calculations were based on empirical data. The adequacy of the developed numerical model was substantiated by the results of physical experiments. The CFD results showed that the most significant energy losses in bidirectional turbines are manifested in the output grid of the turbine.
Źródło:
Polish Maritime Research; 2023, 4; 102-109
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The possibilities of limiting the toxic compound emission from Diesel engines and boilers during ship’s stay in harbour
Autorzy:
Zeńczak, W.
Powiązania:
https://bibliotekanauki.pl/articles/360401.pdf
Data publikacji:
2013
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
ship's power plant
environment protection
toxic compound emission
ship’s power and boiler plants
Opis:
During their stay in harbours the ships generate the electric energy and heat for their needs most frequently by use of their own power and boiler plants through Diesel generating sets and oil fired boiler. The operation of this machinery causes the toxic compound emission to the atmosphere. In this article the possibilities are presented of limiting this emission through such activities as supplying the ship with the energy from the shore power network, from barge-situated power plant provided with the Diesel generating sets supplied with LNG, and in case of the boiler plant through the application of the liquid or solid biofuel. There are also presented some selected results of the simplified comparative analysis of the emission levels with the various methods of generating the electric energy and heat during ship’s stay in harbour.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 36 (108) z. 2; 190-195
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dodatkowe szkolenie mechaników okrętowych w przedsiębiorstwie żeglugowym zwiększające kompetencje do objęcia obowiązków zawodowych w siłowni okrętowej
Additional Training of Young Engineers in Shipping Company to Increase Professional Competences to Take on Duties in Engine Room
Autorzy:
Kamiński, P.
Powiązania:
https://bibliotekanauki.pl/articles/342077.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Wydawnictwo Uniwersytetu Morskiego w Gdyni
Tematy:
siłownie okrętowe
szkolenie mechaników wachtowych
ship power plant
watch engineer training
Opis:
W artykule zostały omówione ogólne założenia, cele oraz efekty działania programu szkoleniowego „BS Cadet Program”, jaki wprowadził jeden z większych niemieckich armatorów w celu poprawy wyszkolenia członków załóg na poziomie operacyjnym w dziale maszynowym, którzy dopiero będą obejmować obowiązki mechanika wachtowego w siłowni okrętowej. W pracy zawarto również porównanie wyników weryfikacji zdobytej wiedzy przez uczestników szkolenia z wynikami studentów Wydziału Mechanicznego po ostatnim roku nauki.
The article discusses general conventions, goals and effects of the "BS Cadet Program" training program, introduced by one of the largest German shipowners to improve the competences of crew members at the operational level, who will take up duties of the watch engineer in the ship engine room soon. The work also presents the results comparison of verification of knowledge acquired by participants during the training with the results gained by the Faculty of Mechanical Engineering students being after their last semester of studies.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Gdyni; 2018, 108; 55-66
1644-1818
2451-2486
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Gdyni
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Designing engine rooms of new generation ships realized within the framework of European research projects EUREKA - chosen questions
Autorzy:
Girtler, J.
Powiązania:
https://bibliotekanauki.pl/articles/962810.pdf
Data publikacji:
2004
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship power plant
sea-going ship
reliability and safety
design
semi-Markovian process
Opis:
Importance of reliability and safety in the operation phase of engine rooms has been proven. A concept of designing engine rooms taking into consideration their reliability, safety i of functioning as well as ecological features has been proposed. The need for as well as the main principles of carrying out empirical research in particular ship design stages have been introduced. Possibilities of the use of the semi-Markov theory in designing engine rooms have been justified. Possibilities of formulation and importance of hypothesis in scientific research related to engine rooms of sea going and inland ships depending on their particular specific features have been introduced. Examples of such hypothesis and their verification methods have been given. Possibilities of the use of semi-Markov processes in optimization of the ship operation have been signalled.
Źródło:
Polish Maritime Research; 2004, S 1; 57-61
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Limiting distribution of the three-state semi-Markov model of technical state transitions of ship power plant machines and its applicability in operational decision-making
Autorzy:
Girtler, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/258958.pdf
Data publikacji:
2020
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
decision
probability
ship power plant machine
semi-Markov process
ship internal combustion engine
Opis:
The article presents the three-state semi-Markov model of the process {W(t): t > 0} of state transitions of a ship power plant machine, with the following interpretation of these states: s1 – state of full serviceability, s2 – state of partial serviceability, and s3 – state of unserviceability. These states are precisely defined for the ship main engine (ME). A hypothesis is proposed which explains the possibility of application of this model to examine models of real state transitions of ship power plant machines. Empirical data concerning ME were used for calculating limiting probabilities for the process {W(t): t > 0}. The applicability of these probabilities in decision making with the assistance of the Bayesian statistical theory is demonstrated. The probabilities were calculated using a procedure included in the computational software MATHEMATICA, taking into consideration the fact that the random variables representing state transition times of the process {W(t): t > 0} have gamma distributions. The usefulness of the Bayesian statistical theory in operational decision-making concerning ship power plants is shown using a decision dendrite which maps ME states and consequences of particular decisions, thus making it possible to choose between the following two decisions: d1 – first perform a relevant preventive service of the engine to restore its state and then perform the commissioned task within the time limit determined by the customer, and d2 – omit the preventive service and start performing the commissioned task.
Źródło:
Polish Maritime Research; 2020, 2; 136-144
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of redundancy in ship power plants of offshore vessels
Autorzy:
Tarelko, W.
Powiązania:
https://bibliotekanauki.pl/articles/27315942.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
redundancja
niezawodność
elektrownia okrętowa
statek przybrzeżny
reliability
ship power plant
offshore vessel
Opis:
Power and propulsion systems of offshore units must be of a very high level of reliability. The loss of ability to perform functions of their components causes generally to very high economic losses, which may be increased by unused the weather window resulting to postponing the planned offshore operations. To ensure carrying out so expensive offshore operations in the most reliable way, various types of redundancies are built-in ship power plants. This paper deals with issues related to application of redundancy in ship power plants of offshore vessels. Especially, evolution of redundancy application in ship power plants, and design solution of redundancy for offshore vessels are presented. Moreover, the specifics of these offshore operations so important from the point of view of minimizing financial losses due to any interruptions caused by failures of power and propulsion systems are discussed in detailed way.
Źródło:
New Trends in Production Engineering; 2018, 1, 1; 443-452
2545-2843
Pojawia się w:
New Trends in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 35

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