Efficiency of using a hybrid marine propulsion system vs. conventional system

Vasilescu, Mihail-Vlad; Panaitescu, Mariana; Panaitescu, Fanel-Viorel; Dinu, Dumitru; Panait, Cornel

doi:10.1117/12.2570631

Cited by 3 publications

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“…3.1. Modeling the phenomena regarding the comparative analysis of the forces in the FLETTNER Balloon and in the large vertical wind turbines 3.1.1 Velocity curl and pressure distributions, forces and kinetic energies for the FLETTNER Balloon in various weather conditions, with winds of 10 and 20 m / s respectively from different directions: 𝟎 ᵒ , 𝟑𝟎 ᵒ , 𝟔𝟎 ᵒ , 𝟗𝟎 ᵒ in various planes They were simulated for the FLETTNER balloon: the distribution of the density on the balloon (figure 10), [5], the velocity (figure 11), the pressure on the balloon (figure 12), the force on the balloon (figure 13), the turbulence kinetic energy (figure 14), all in the XOY plane, then XOZ, at a wind speed of 10 m / s, 20 m / s and a direction of wind of 30°, 60°, 90°. From the figure 11 can see the velocity curl distribution on the plan where is situated the FLETTNER Balloon, in XOZ plane at a wind speed of 20 𝑚/𝑠 and a wind direction of 60 ᵒ .…”

Section: Resultsmentioning

confidence: 99%

“…After the installation of the green energy [4] sources (a FLETTNER Balloon [5] with helium and four vertical wind turbines) part of the hybrid system, on a container ship, ship stability and maneuverability are not fundamentally changing. There are not big differences between the ship initial manoeuvrability and the ship manoeuvrability with the hybrid system installed.…”

Section: Discussionmentioning

confidence: 99%

“…Fig.13. Distribution of force on the plane, in the XOZ plane -at a wind speed of 20 m / s and a wind direction of 60 ° [5]. …”

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confidence: 99%

“…17. Pressure distribution on the vertical wind turbine located in the stern port, in the XOZ plane -at awind speed of 20 m / s [5].…”

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confidence: 99%

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The Effect of Use of Unconventional Power Generation Systems on the Safety of Navigation

Vasilescu¹,

Panaitescu²,

Scupi³

et al. 2022

IJMMT

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By using a hybrid system formed from two unconventional energy devices large vertical wind turbines and FLETTNER Balloon and a conventional source of energy, ship owners can save a great deal of fuel, thus making substantial savings and not least, reducing pollution, making environmentally friendly ships. Unfortunately, the legislation in force does not allow ships to enter ports with unconventional energy sources. For this reason, unconventional energy sources will be used only during transoceanic crossings or during longer journeys. In this article major points are: 1) the influence of the FLETTNER helium Balloon on the manoeuvrability and road stability of the ship; 2) the influence of large Vertical wind turbines installed on the deck of the container ship on the manoeuvrability and road stability of the ship; 3) the calculation of the stability of the ship with the FLETTNER Balloon with helium coupled and with the 4 Vertical wind turbines installed on the ship's deck; 4) modelling the phenomena regarding the comparative analysis of the forces in the FLETTNER Balloon and in the large Vertical wind turbines. As results were obtained: 1) velocity and pressure distributions, forces and kinetic energies for the FLETTNER Balloon in various weather conditions, with winds of 10 and 20 m / s respectively from different directions: 00, 300, 600, 900 in various planes; 2) the distributions of speeds and pressures, forces and kinetic energies studied individually for each of the four large vertical wind turbines at winds of 10 m/s and 20 m/s respectively in various planes, segregated according to the position of port bow, starboard and stern port, starboard. This development was due to the growing demands to solve various problems at the industrial level, coming to the aid of many engineers who wanted an improvement in the equipment used, but did not have the financial support to perform experiments.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

The Effect of Use of Unconventional Power Generation Systems on the Safety of Navigation

Vasilescu¹,

Panaitescu²,

Scupi³

et al. 2022

IJMMT

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Research on Choosing the Best Gas for the Flettner Balloon, an Unconventional Power Generator Energy Device

Vasilescu¹,

Epikhin

2023

Operation of Maritime Transport

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In the last 30 years, the degree of pollution has been continuously increasing and the chemical structure of the atmosphere has changed due to large amounts of polluting emissions such as N0X, S0X, C02 and other particles resulting from combustion, which lead to the destruction of the ozone layer, climate change, greenhouse effect or acid rain. Because the price of oil is continuously increasing, the atmosphere is degrading due to emissions of exhaust gases and the general degree o f pollution of the Earth is increasing day by day, various solutions for the generation of non-conventional energies have begun to arouse the interest of parties involved in maritime transport. Non-conventional propulsion systems, which use wind energy or solar energy, are currently making a comeback after being ignored for a long time. By using an unconventional power generator energy devices, like Flettner Balloon, ship owners can save a great amount of fuel, thus making substantial savings and not least, reducing pollution, making environmentally friendly ships. In this article you can discover six major points, which are: 1) Flettner Balloon description, 2) Flettner Balloon components, 3) Determination of the gas with which to fill the Flettner Balloon, 4) The principle of operation for the Flattner Balloon, 5) Energy balance, 6) Conclusions.

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Installing a Hybrid Energy Balance System on a Port-Container Ship

Vasilescu¹,

Epikhin

2023

Operation of Maritime Transport

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Maritime Organization (IMO)" gived different amendments in order to reduce the polluting emissions produced by ships.There is a natural and continuous concern to reduce marine pollution and to implement the requirements stipulated by Annex VI of the International Convention for the Prevention of Pollution of the Marine Environment - MARPOL; The emission of carbon dioxide C02, in the gases resulting from naval propulsion engines, has alarming values, considering that C02 is the main negative factor in producing the greenhouse effect and implicitly global warming. Shipbuilders are aware that ship engines emit harmful exhaust gases and certain chemical compounds that are dangerous to human health and to the environment. One way for reducing pollution is by using unconventional energies captured from the marine environment, outside the ship, like solar or wind, which lead to the saving of a part of the fossil fuels and lubricants consumed on board the ships. Indirectly in this way earth's fossil fuel reserves can also be preserved. In this paper, we have studied a hybrid system formed from non-conventional electricity generating systems (a Flettner Balloon and four large vertical wind turbines) and a conventional one which uses fossil fuel. The non-conventional electricity generating system captures and uses the wind energy. The existence of two systems on board, the reactive, classical and the active, coming from wind energy, gives the possibility that in the event of failure o f one of them, the other can be used. Also, the existence of the two independent electricity generating systems makes it possible to carry out overhauls and repairs without the ship being stationary or adrift during them; The article main points are: the elements of the hybrid energy system, placing the Flettner helium Balloon on a container ship as an alternative power source of energy, placing four large vertical wind turbines on a container ship as an alternative source of energy, energy balance of electricity generating systems, from non-conventional sources, connecting conventional and non-conventional power sources to the ship's main power bar, electrical load of the ship's consumers, conclusions

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Efficiency of using a hybrid marine propulsion system vs. conventional system

Cited by 3 publications

References 0 publications

The Effect of Use of Unconventional Power Generation Systems on the Safety of Navigation

The Effect of Use of Unconventional Power Generation Systems on the Safety of Navigation

Research on Choosing the Best Gas for the Flettner Balloon, an Unconventional Power Generator Energy Device

Installing a Hybrid Energy Balance System on a Port-Container Ship

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