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Wyświetlanie 1-15 z 134
Tytuł:
Dimensioning of port waterways for vessels handling offshore wind farms using the navigational risk analysis
Autorzy:
Gucma, Stanisław
Gralak, Rafał
Powiązania:
https://bibliotekanauki.pl/articles/24202516.pdf
Data publikacji:
2022
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
offshore wind farm
offshore wind turbine
offshore wind turbine installation terminal
wind turbine installation vessel
wind turbine transport vessel
dimensioning of waterways
Opis:
This article indicates the development trends in the construction of offshore wind turbines worldwide, and the characteristics of existing and planned ships for wind turbine installation and maintenance; it presents an approach to design ports with their future operations in mind. Problem: The safety of navigation in port waterways is the basic restrictions for the construction of harbors (terminals) to handle ships used for the construction of OWT and for increasing their size. Navigational risk is a criterion of navigational safety assessment that allows its accurate estimation in port waterways. Method: The article presents the method for dimensioning port waterways for ships serving offshore sea wind turbine transport and construction. Furthermore, a method for determining the navigational risk of jack-up vessels navigating in port waterway areas is presented. Results: The authors have determined conditions for safe operation of these ships in restricted areas and defined the basic condition of navigational safety. The presented method of navigational risk analysis refers to the departure of a loaded ship carrying offshore wind turbine components in the presently designed port terminal in Świnoujście for handling offshore wind farm projects. Conclusion: These are universal methods that can be applied to the design of ports serving vessels that install offshore wind turbines in various types of waters.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2022, 70 (142); 9--19
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods of modeling the power characteristics of wind turbines
Autorzy:
Jarmuda, T.
Powiązania:
https://bibliotekanauki.pl/articles/97592.pdf
Data publikacji:
2016
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
interpolation
approximation
wind turbine
MATLAB
Opis:
The work presents three methods of modeling the power characteristics of a wind turbine in the MATLAB & SIMULINK environment, that is – linear interpolation, nonlinear approximation, and linear approximation. Simulation tests were performed for two wind turbines: AH and AIRCON, with the nominal power of 10 kW. Calculations of the amount of electric energy generated by the above–mentioned types of wind turbines were performed for the constraint assumed (wind speed measurements in the south–eastern Poland for January and June 2014). The differences between the energy amounts calculated with the use of the three power characteristic modeling methods were determined. The results were summarized and final conclusions were formulated.
Źródło:
Computer Applications in Electrical Engineering; 2016, 14; 393-406
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metallurgical quality evaluation of the wind turbine main shaft 42CrMo4 steel: microscopic and Mössbauer studies
Autorzy:
Siemiątkowski, Z.
Gzik-Szumiata, M.
Szumiata, T.
Rucki, M.
Martynowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/146538.pdf
Data publikacji:
2017
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
metallurgical forging
wind turbine
Mössbauer spectrometry
Opis:
In this paper, the results of the complex examination of the 42CrMo4 steel samples are presented. The samples were taken from the metallurgical forging prepared for the production of the wind turbine main shaft. The samples underwent Mössbauer spectroscopic analysis, as well as the measurement of its mechanical characteristics such as hardness and strength are analysed. Conversion electron Mössbauer spectrometry confirmed phase purity and isotropy of the investigated 42CrMo4 steel. The method provided accurate results, proving Mössbauer spectrometry to be an effective tool for the wind turbine main shaft analysis.
Źródło:
Nukleonika; 2017, 62, 2; 171-176
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Proposed Methodology for the Annoyance Penalty of Amplitude Modulated Wind Turbine Noise
Autorzy:
Makarewicz, Rufin
Powiązania:
https://bibliotekanauki.pl/articles/2141682.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
annoyance
wind turbine noise
amplitude modulation.
Opis:
Amplitude modulation increases the annoyance caused by wind turbine noise. One gets the improved annoyance when a penalty is added to the measured or calculated time-average sound level. The amplitude modulated wind turbine noise consists of pulses. Each of them could be characterized by the short time-average sound level and the modulation depth. The latter determines the pulse penalty. This paper shows how to calculate the improved annoyance of amplitude modulated wind turbine noise, when the short time-average sound level and the penalty for each pulse are known. A special case of identical pulses is discussed. The proposed methodology needs to be tested by research.
Źródło:
Archives of Acoustics; 2022, 47, 1; 125-128
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The natural frequency analysis of a wind turbine with vertical axes
Autorzy:
Mazur, D.
Szczepański, A.
Rudy, M.
Powiązania:
https://bibliotekanauki.pl/articles/114730.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
natural frequency analysis
wind turbine
vibrations
Opis:
The natural frequency analysis of four analytical models of a home wind turbine is presented in this paper. These models are: the rotor of a generator without housing, the rotor of a generator with housing and a stator, the rotor of a wind turbine, and the entire assembly of the wind turbine. By comparison of the received results of these models, evaluation of the variation in natural frequencies was performed. Additionally, interaction of the natural frequencies of the models with excitations was investigated. Moreover, various forms of vibrations, such as bending and torsional mode of the wind turbine rotor, rotor generator and blades, were found. Simplified analytical calculations for evaluation of the bearing stiffness applied to the vibration models were also carried out. The natural frequency analysis was performed in the analytical environment of the Siemens NX software based on NX Advanced module by the use of NASTRAN solver.
Źródło:
Measurement Automation Monitoring; 2015, 61, 12; 535-537
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of power properties of the wind turbine on energetic and economic indicators of electric energy production
Autorzy:
Gomuła, S.
Woźniak, A.
Powiązania:
https://bibliotekanauki.pl/articles/175537.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
velocity of wind
wind turbine
production of energy
Opis:
In the article the influence of the parameters describing the characteristics of the wind power station on the performance and economical factors of production of electrical energy was shown. The parameters describing the characteristics of the wind turbine were as follows: the nominal power, the speed of gaining the nominal power and the speed of the starting up of the power station. The degree of the usage of the nominal power of the power station was taken as the performance factor. The net cash flow and discount payback time were assumed as the economical factors.
Źródło:
Transactions of the Institute of Fluid-Flow Machinery; 2016, 132; 57-69
0079-3205
Pojawia się w:
Transactions of the Institute of Fluid-Flow Machinery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Towards the analysis of process fluctuation in wind turbine
Kierunki analizy fluktuacji procesów w silnikach wiatrowych
Autorzy:
Draganov, B.
Kozyrskyi, V.
Powiązania:
https://bibliotekanauki.pl/articles/56320.pdf
Data publikacji:
2013
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
process fluctuation
wind turbine
entropy
turbulent wind flow
Opis:
The basic laws of fluctuation and statistical physics propositions are presented. The analysis of turbulent wind flow characteristics is performed. An example of the correlation of wind speed horizontal and vertical components pulsation is presented. The dependence between the fluctuation laws and entropy is determined.
Kierunki analizy fluktuacji procesów w silnikach wiatrowych. Przedstawiono podstawowe prawa fluktuacji i twierdzenia fizyki statystycznej. Wykonano analizę właściwości tur-bulentnego przepływu wiatrowego. Przedstawiono przykład korelacji pulsacji poziomych i pionowych składowych prędkości wiatru. Określono zależność między prawem fluktuacji i entropii.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Agriculture; 2013, 62 Agric.Forest Eng.
0208-5712
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Agriculture
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sea wind farms
Autorzy:
Szelangiewicz, T.
Żelazny, K.
Powiązania:
https://bibliotekanauki.pl/articles/135439.pdf
Data publikacji:
2015
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
wind velocity
efficiency of wind turbine
power of wind turbine
mounting sea wind turbines
floating wind turbines
design analyses of wind turbines
Opis:
Wind is such an element of sea environment, from which it is relatively easy to obtain energy. Wind parameters over both seas and oceans are more favorable than those on land (due to variability of landform features). Moreover, also sea wind turbines exercise comparatively smaller negative effect on people than on land. Therefore, sea wind farms are ahead of us, as further development of wind energy. The article presents basic parameters of wind turbines, possible installations on sea bed, as well as future designs of large floating sea farms. The article presents also an example of design analyses of wind turbine, using computational fluid dynamics (CFD).
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2015, 41 (113); 35-40
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design of structure of tension leg platform for 6 MW offshore wind turbine based on FEM analysis
Autorzy:
Żywicki, J.
Dymarski, P.
Ciba, E.
Dymarski, C.
Powiązania:
https://bibliotekanauki.pl/articles/260390.pdf
Data publikacji:
2017
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
offshore wind turbine
TLP
support structure
FEM
Opis:
The article presents the calculation and design stages of the TLP platform serving as a supporting construction of a 6 MW offshore wind turbine. This platform is designed to anchor at sea at a depth of 60 m. The authors presented the method of parameterization and optimization of the hull geometry. For the two selected geometry variants, the load and motion calculations of the platform subjected to wind, wave and current under 50-year storm conditions were performed. The maximum load on the structure was determined in these extreme storm conditions. For these loads, the MES calculation of the designed platform was performed for the selected variant. Authors have presented a method for calculating maximum wind, wave and current stresses on the structure during the worst storm in the past 50 years. For these loads the MES endurance calculations of the designed platform were made. Based on the results of these calculations, the required structural changes and recalculations have been made in succession to the structural design of the platform, which meets the design requirements and has the required ad hoc strength. The article contains stress analysis in „difficult” nodes of constructions and discusses ways of solving their problems. The work is part of the WIND-TU-PLA project from the NCBR Research Agreement (Agreement No. MARTECII / 1/2014).
Źródło:
Polish Maritime Research; 2017, S 1; 230-241
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental and Theoretical Study on a Wind Energy Unit
Autorzy:
Abusamaha, Hanan M.
Dawoud, Farah
Al-Qalab, B.
Ayadi, O.
Powiązania:
https://bibliotekanauki.pl/articles/123619.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
wind turbine
angle of attack
power curve
Opis:
The conversion process in the wind turbine, from mechanical (kinetic) energy to electrical energy, is affected by many factors that increase or decrease the useful output of the wind energy convertor. In this paper, three factors were studied experimentally on a Horizontal Axis Wind Energy Unit “EEEC” in laboratory-scale. The aim of this experiment was to study the influence of the number of blades, the angle of attack and the incident angle on the wind energy unit parameters to optimize its efficiency. For this purpose, the effect of the number of blades was studied firstly, in order to select the number of blades where the maximum inputs obtained at lab ambient temperature 25 °C and atmospheric pressure. Then, different readings of the incident angle and angle of attacks were taken. The data was analyzed using Microsoft Excel software. The results show that the maximum parameters of wind unite energy that produce the maximum efficiency, namely: voltage (volt), current (ampere) and rotational speed (rpm) are obtained when the number of blades is 4, the incident angle is 0° (when the rotor direction is with wind direction) and the angle of attack is 75°. Finally, these results were implemented in a simulation program (HOMER software) that uses this turbine in a resident along with storage to cover the needs of a selected house.
Źródło:
Journal of Ecological Engineering; 2019, 20, 6; 207-214
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimisation of the Aerodynamic Characteristics of H-Darrieus Vertical-axis Wind Turbines
Autorzy:
Pavlenkо, Anatoliy
Koshlak, Hanna
Basok, Borys
Novikov, Volodymyr
Powiązania:
https://bibliotekanauki.pl/articles/27315742.pdf
Data publikacji:
2023
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
wind turbine
aerodynamic characteristic
blade profile optimization
Opis:
This article presents a study of the aerodynamic characteristics of a small H-Darrieus wind turbine to optimise its design. The article proposes correlations between the blades' geometric and aerodynamic characteristics, optimising the blades' profile and their dimensions for various values of wind speed, aerodynamic forces, and rotational moments. The data obtained can be helpful in the design and study of low-power wind turbines operating at low wind speeds with variable directions.
Źródło:
Rocznik Ochrona Środowiska; 2023, 25; 16--24
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Usage of lidar data in planning of wind turbines location
Autorzy:
Plichta, A.
Piasecki, A.
Powiązania:
https://bibliotekanauki.pl/articles/297981.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
wind turbine
lidar
information system
geophysics
georadar
Opis:
The aim of this paper is to confirm the thesis that by the usage of laser scanning methods it is possible to find a link confirming the characteristics of swampy land on which the specific building projects are supposed to be carried, as well as their requirements in high accuracy of location and the stability and durability of the substrate. Visible to the naked eye, regular depressions in the ground may foretell the places of underground space, created or influenced by the flow of water or due to geological structures, characterizing the substrate as inconsistent. These spaces seriously affect the possibility of placing wind turbines. By using LIDAR high correlation is visible between the characteristics of the terrain model and the location of underground geological spaces that could endanger the constructions that will be formed in the area. While the construction is being built the ground emphasizes so much that wrong location can simply cause the collapse of the structure. The results were supported with geophysical researches, using three methods: ERT - electrical resistivity tomography, GPR - ground penetrating radar, and the seismic method.
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2015, 18(3); 179-190
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamic investigation of twist-bend coupling in a wind turbine blade
Badania eksperymentalne i symulacyjne sprzężenia typu zginanie-skręcanie w dynamice łopaty turbiny wiatrowej
Autorzy:
Luczak, M.
Manzato, S.
Peeters, B.
Branner, K.
Berring, P.
Kahsin, M.
Powiązania:
https://bibliotekanauki.pl/articles/279279.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
wind turbine blade
bending
torsion
composite materials
Opis:
This paper presents some results and aspects of the multidisciplinary and interdisciplinary research oriented for the experimental and numerical study in static and dynamic domains on the bend-twist coupling in the full scale section of a wind turbine blade structure. The main goal of the conducted research is to confirm experimentally the numerical prediction of modification of the dynamic and static properties of a wind turbine blade. The bend-twist coupling was implemented by adding angled UD (UniDirectional) layers on the suction and pressure side of the blade. Static and dynamic tests were performed on a section of the full scale wind turbine blade provided by VestasWind Systems A/S. The results are presented and compared with the measurements of the original and modified blade. Comparison analysis confirmed that UD layers introduce measurable bend-twist couplings, which was not present in the original blade.
W artykule przedstawiono wyniki multidyscyplinarnych prac badawczych prowadzonych na sekcji dużej łopaty turbiny wiatrowej. Prace obejmowały badania eksperymentlane oraz symulacje numeryczne sprzężenia typu zginanie-skręcanie w statyce i dynamice badanej łopaty. Podstawowym celem badawczym było potwierdzenie w drodze eksperymentu wyników symulacji numerycznej własności statycznych i dynamicznych łopaty. Sprzężenie typu zginanie-skręcanie zostało wprowadzone w konstrukcji łopaty poprzez dodtkowe zalaminowanie warstw kompozytów włóknistych jednokierunkowych po obu stronach łopaty pod dobranym kątem. Testy statyczne i dynamiczne zostały zrealizowane na sekcji dużej łopaty turbiny wiatrowej dostarczonej przez producenta Vestas Wind Systems A/S. W pracy przedstawiono i porównano wyniki badań oryginalnej sekcji łopaty oraz sekcji zmodyfikowanej. Analiza porównawcza wyników potwierdziła wyniki symulacji numerycznych. Wprowadznie dodatkowych warstw kompozytu włóknistego spowodowało powstanie w badanej łopacie mierzalnego sprzężenia typu zginanie-skręcanie. Sprzężenie to nie było obserwowane w oryginalnej łopacie przed modyfikacją.
Źródło:
Journal of Theoretical and Applied Mechanics; 2011, 49, 3; 765-789
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Noise and Infrasonic Noise at Workplaces in a Wind Farm
Autorzy:
Pleban, D.
Radosz, J.
Smagowska, B.
Powiązania:
https://bibliotekanauki.pl/articles/178094.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wind turbine noise
infrasonic noise
occupational exposure
Opis:
Dynamic development of wind power should take into account requirements resulting from environmental protection and human health. However in the case of occupational exposure to noise emitted by wind turbines (workplaces of wind turbine operation personnel, including persons performing maintenance) there are no documented data in literature in this regard. An example of pilot assessments of noise and infrasonic noise at workplaces in a wind farm is presented in the paper. The results of measurements and assessments of noise emitted by the wind turbines Vestas V80-2.0 MW show that noise does not constitute health hazard for wind farm workers. Furthermore infrasonic noise emitted by the wind turbines Vestas V80-2.0 MW is not an annoyance agent for wind farm workers.
Źródło:
Archives of Acoustics; 2017, 42, 3; 491-498
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The characteristics of the operating parameters of the vertical axis wind turbine for the selected wind speed
Autorzy:
Kamiński, Z.
Czyż, Z.
Powiązania:
https://bibliotekanauki.pl/articles/102107.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
wind turbine
renewable energy
wind tunnel
drive torque
power
Opis:
The article presents the results of examining a wind turbine on the vertical axis of rotation. The study was conducted in an open circuit wind tunnel Gunt HM 170 in the laboratory of the Department of Thermodynamics, Fluid Mechanics and Aviation Propulsion Systems at Lublin University of Technology. The subject of research was a rotor based on the patent PL 219985, with blades capable of altering the surface of the active area (receiving kinetic energy of the wind). The study was performed on appropriately scaled and geometrically similar models maintaining, relevant to the type of research, the criterion numbers. The studied rotors with different blade inclination angles were produced using a 3D powder printer ZPrinter® 450. The results of the conducted research were obtained for the flow velocity of 6.5 m/s and three inclination angles, 30°, 60°, and 90°, at variable rotational speed. The test equipment used in the study allows maintaining the required speed, recording velocity and torque, which in turn allows an engineer to measure such characteristics of torque and power as a function of rotor speed.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 1; 58-65
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 134

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