Wyniki wyszukiwania - BazTech

1

Navigation’s safety improving by efficiently analysis of the ship’s power Plant energy flows interconnection

Veretennik A., Kulyeshov I., Mikhailov S.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

|

2022

|

Vol. 16 No. 1

39--42

EN

The operation of an autonomous movable objects, such as a sea transport vessels, implies the presence of a source of potential energy on board the vessel and the possibility of converting this energy into the work required for the autonomous movable object (vessel). Being an autonomous object, a transport vessel should be provided with energy for it moving, energy for heat exchange processes on board and electricity for powering electrical equipment, automation and navigation systems, and household needs on board. An analysis of the component of the engine room equipment made it possible to designate (combine) the generating equipment of mechanical energy flow, equipment which are generating the heat energy flow and equipment which are generating the electric energy flow. Based on the results of the research the relationships between the energy flows are identified connections and ways to ensure stabilization of energy generation on board the cargo vessel is outlined. Using the results of the research the relationships between the energy flows will reduce the likelihood of accidents on board a cargo vessel due to a stop in the generation of one of the energy flows and thereby ensure increased safety of man at sea. Taking into account the peculiarities of the distribution of energy flows in ship power plants can be an effective tool not only to improve the economic performance of it, but also to increase the safety of navigation and navigation in general, due to the reliable provision of uninterrupted and efficient operation of ship power plants.

2

The possibilities of limiting the toxic compound emission from Diesel engines and boilers during ship’s stay in harbour

Zeńczak W.

Zeszyty Naukowe / Akademia Morska w Szczecinie

|

2013

|

nr 36 (108) z. 2

190--195

EN

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.

3

The selected methods of utilizing the wind power as the auxiliarz source of enegrz on diesel engine powered ships

Zeńczak W.

Journal of Polish CIMAC

|

2012

|

Vol. 7, no 1

305-314

EN

In the article there are presented some selected methods of the wind power conversion for the purposes of supplementing the ship’s main propulsion or supporting the electric energy production which provide the opportunities to improve the ship’s energy effectiveness ratio. The wind energy has been characterised in terms of its application on ships. A proposal has been made to apply the arrangement including the wind turbine with horizontal axis for the electric energy production and the fuel savings have been estimated during its operation. A concept has been discussed involving a special kind of thruster [towing kite] in the form of the towing kite connected by means of a rope with the ship and supporting her main propulsion. Also the arrangements such as Flettner rotors and turbine with vertical axis have been referred to.

4

The evaluation of the changes in the emission of toxic compounds resulting from the power supply for the ships in portseffected by means of the shore power

Mielech J., Zeńczak W.

Journal of Polish CIMAC

|

2011

|

Vol. 6, no 1

149-154

EN

During their stay in harbours the ships generate the electric energy for their needs most frequently by ship’s power plant through Diesel generating sets. In many ports, however, there is also a possibility to supply the ship with electric power by use of the shore power connection. Using such sources in some cases may contribute to reduce the emissions of toxic compounds. This article presents the results of the comparative analysis of the emission levels in both cases of electric supply basing on the measurements conducted on two ferries and Dolna Odra power plant nearby Szczecin.

5

The concept of ship's power plant arrangement involving biomass fired boiler

Zeńczak W.

Journal of Polish CIMAC

|

2010

|

Vol. 5, no 1

205-211

EN

The article presents the results of the analysis of the possibilities of the application of the solid biomass in the form of pellets as the fuel for ships in consideration of the environment protection as well as due to increase of the liquid fuel prices and decreasing resources of the crude oil. As the object of investigation a ship of minor cruising range of river – sea type has been assumed, chiefly intended for the service on the Baltic Sea. The ship’s power system solution has been discussed. A simplified comparative analysis of the fuel costs for a ship with power plant including biomass fired boilers and a ship with the conventional solution of the motor power plant supplied by Diesel oil has been demonstrated. The advantage of the application of the fluidised bed biomass fired boiler has been indicated and the research trends have been presented.

6

Tolerated Alignment of Shafts as a Method of Reduction of Vibration

Charchalis A., Grządziela A.

Mechanika / Akademia Górniczo-Hutnicza im. St. Staszica

|

2003

|

T. 22, z. 3

239-244

EN

The application of vibro-acoustic analysis methods has been presented in this paper. The described conception concerns evaluative process of the centring state in a transmission shafts within powered, marine gas turbine system as a function of ships displacement. Some structural components of the gas turbine unit and reduction gearbox have been selected for the analysis. Some results of the vibro-tests have been presented as well. The tests had been worked out during sea trials. This element of BDS system is accepted and used in the ships, which are powered by the COGAG power plant. The presented method is the typical database for the monitoring system of shaft alignment off-line and on-line type. This described idea is based on the researches of the corvette power plants.

7

Ocena przynależności danych o uszkodzeniach systemów siłowni okrętowych do jednej populacji generalnej

Matuszak Z.

Automatyka / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie

|

2001

|

T. 5, z. 1/2

411-420

PL

Analiza uszkodzeń elementów siłowni okrętowych różnych statków, w których podstawowym obiektem technicznym jest spalinowy silnik główny, wymaga określenia, czy poszczególne systemy statków i dane o uszkodzeniach pochodzą z jednej populacji generalnej, albo inaczej, czy można je traktować jako realizację tej samej próby losowej. Wymagane to jest szczególnie wtedy, kiedy w analizie ich uszkodzeń, ze względu na zbyt małą liczbę zaobserwowanych uszkodzeń w siłowniach poszczególnych statków, chce się uwzględnić w analizie łączną liczbę uszkodzeń w poszczególnych systemach siłowni realizujących te same zadania na różnych statkach. W prezentowanej pracy zastosowano do tego celu testu sumy rang Kruskala-Wallisa. Test został przeprowadzony zarówno dla chwil t(n) kolejnych uszkodzeń, jak i dla czasów τn pomiędzy kolejnymi uszkodzeniami danej instalacji (systemu) siłowni. We wszystkich przeprowadzanych testach przyjmowano poziom istotności α = 0,05. Prezentowany materiał zawiera wyniki testu dla analizowanych instalacji siłowni dziesięciu statków.

EN

Analysis of engine room equipment or installation failures that can occur onboard different ships, when all ships are equipped with a propulsion engine as a main technical object, requires recognition whether those faults belongs to one general population or can be identified as a part of one global sample. That problem is shown especially when the number of observations from a single ship is to low for the analysis standards, but a common number of observations from corresponding installations of different ships, meet the analysis requirements. The paper presents an adoption of the Kruskala-Wallis class test as a problem solution. Both the fault events tn and duration between the following faults τn have been used to check the method accuracy. The correlation index of all carried tests has been assumed at α = 0.05 level. All tests have been based on observations from corresponding installations of ten different ships.