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Tytuł:
Wind energy
Autorzy:
Jasiūnas, Kęstutis
Teleszewski, Tomasz Janusz
Powiązania:
https://bibliotekanauki.pl/chapters/4202218.pdf
Data publikacji:
2019
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
wind energy
wind power
wind turbines
wind farms
Opis:
Wind energy is one of the most environmentally friendly energy industries. Wind power is used in more than 70 countries of the world to produce electricity. Wind power plants generate more than 1% of the world’s electricity. Wind energy is considered to be one of the most popular renewable energy sources. In countries where this energy is already widely used, the environmental conditions substantially improve. To increase the efficiency of wind power plants and work reliability, and also to solve other problems, it is necessary to carry out climate research on wind energy and collect information on the distribution of wind energy depending on wind speed profiles, etc.
Źródło:
Buildings 2020+. Energy sources; 99-132
9788365596727
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:
Wind affecting berthing operations
Autorzy:
Kløvning, E. M.
Powiązania:
https://bibliotekanauki.pl/articles/1841579.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
berthing operations
wind impact
car passenger ferry
wind parameters
wind force
berthing in wind
effect of wind
optimization of operations
Opis:
Almost every voyage culminates in a manoeuvre to berth the ship safely along a quay or wharf. During this phase a ship is affected by a number of factors, one of them being wind. This paper seeks to understand how wind affect a ship in regards of power consumption during berthing. A field study was conducted on a car passenger ferry, where every approach in one harbour was logged and analysed over a period of four months. The goal was to provide greater knowledge about energy usage and the study presents several interesting findings. It is estimated that power consumption is stable when the median wind speed is less than 4 m/s. Stronger winds have a significant effect on power consumption, e.g 17 m/s gives an 106,31% increase from calm conditions. Furthermore there is not discovered any correlation between consumption and wind direction in this study.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 3; 721-725
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wind regime on the waste dumps
Vetrovojj rezhim na teppikonakh
Autorzy:
Bunyachenko, V.
Powiązania:
https://bibliotekanauki.pl/articles/791824.pdf
Data publikacji:
2014
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
wind energy
coal mine
waste dump
wind
wind power plant
wind turbine
Lugansk Region
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2014, 14, 2
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
MDS Wind - System monitorowania elektrowni wiatrowych
MDS Wind - wind turbines` monitoring system
Autorzy:
Barszcz, T.
Uhl, T.
Gajetzki, M.
Powiązania:
https://bibliotekanauki.pl/articles/157874.pdf
Data publikacji:
2005
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
MDS Wind
system monitorowania
elektrownie wiatrowe
monitoring system
wind turbines
Opis:
W ostatnich latach energetyka wiatrowa jest najszybciej rozwijającą się gałęzią energetyki. Turbiny wiatrowe są źródłami energii o najwyższej dyspozycyjności. Aby utrzymać wysokie wskaźniki dyspozycyjności niezbędne jest stosowanie systemów monitorowania i diagnostyki. Proces ten jest przyspieszany przez aktywną politykę firm ubezpieczeniowych. Artykuł przedstawia system MDS Wind, który jest nowoczesnym systemem monitorowania i diagnostyki turbin wiatrowych. W pierwszej części scharakteryzowano turbinę wiatrową jako obiekt monitorowania. W kolejnej części opisano strukturę systemu MDS Wind, a następnie przedstawiono algorytmy oprogramowania. Przedstawiono przykładowe estymaty sygnałów drganiowych wyznaczonych przez system wraz z przykładami ich zastosowania do monitorowania turbiny wiatrowej. W ostatniej części opisano bogate możliwości interfejsu użytkownika. System MDS Wind uzyskał w czerwcu 2005 certyfikację Allianz Zentrum Fuer Technik.
In recent years wind energy is the fastest growing branch of the power generation industry. Wind turbines can achieve the highest level of availably. To keep this high level it is necessery to install monitoring and diagnostics systems. This process is influenced by active strategy of insurance companies. The following article describes MDS Wind system, which is state-ofthe-art monitoring and diagnostic system for wind turbines. In the first part wind turbine is presented from the monitoring point of view. next chapter presents MDS Wind system structure, including software algorithms. Examples of vibration signal estimates are presented, together with their applictaion for monitoring of the wind turbine. The last chapter describes rich capabilities of the user interface.
Źródło:
Pomiary Automatyka Kontrola; 2005, R. 51, nr 11, 11; 9-12
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A methodology of wind turbines selection for the given wind conditions
Autorzy:
Jakubowski, M.
Mech, Ł.
Wolniewicz, K.
Powiązania:
https://bibliotekanauki.pl/articles/95331.pdf
Data publikacji:
2017
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
wind power
wind conditions
wind turbine
energia wiatru
warunki wiatrowe
turbina wiatrowa
Opis:
The following paper presents a methodology of wind turbines selection with a axis of rotation based on measurements of wind conditions specific for the wind power sector. Basic properties and characteristics used in the wind power sector, as well as a proper measurement campaign along with determining the necessary instrumentation and the methodology of its use, are the basic parameters that determine the decision of wind farm investment. The main goal of those activities is to gather the accurate meteorological data in sufficient amount using a measurement tower situated at a possible future location of a wind farm. This method is used to identify the direction, speed, gust and energy of the wind. Measurements were made in northern Poland using a measurement system based on a 80-meter-high telescopic mast. The system was equipped with instrumentation necessary to measure and record the basic wind parameters, and was made by the Windhunter Serwis Ltd. Company headquartered in Koszalin. The reliability of measurements was verified using the statistical methods based on the Weitbull’s distribution and the windrose. Thus, the energy potential of the raw air stream was determined with a possible future use in a wind farm sitting.
Źródło:
Journal of Mechanical and Energy Engineering; 2017, 1, 2; 171-178
2544-0780
2544-1671
Pojawia się w:
Journal of Mechanical and Energy Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wind power stations
Autorzy:
Wawrzyniak, T.
Powiązania:
https://bibliotekanauki.pl/articles/97602.pdf
Data publikacji:
2010
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
Wind power stations
renewable energy
electric energy
wind energy
Opis:
The article describes the subject of renewable energy produced in Poland against the background of European Union. Special attention was devoted to utilization of the energy of the wind, representing a range of the types of wind turbines used in the construction of wind power stations. While presenting individual types both defects and the advantages of solutions were listed with the reference to the production of electric energy.
Źródło:
Computer Applications in Electrical Engineering; 2010, 8; 293-301
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some effects of wind on ship’s manoeuvrability
Autorzy:
Szymoński, M.
Powiązania:
https://bibliotekanauki.pl/articles/117192.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
ship’s manoeuvrability
effects of wind
wind resistance
wind speed
windage area
wind pressure force
manoeuvring characteristics
dynamic parameters
Opis:
All ships experience an air and wind resistance while under way of sea, and they may experience adverse effects on wind while manoeuvring in harbours and limited waterways. The wind resistance is proportional to relative wind speed squared, wind direction and the projected windage area of the ship. The paper describes the effect of wind pressure into the ship’s superstructures and houses on ship manoeuvrability, in the range of the wind speed, for the ship which is with the large windage area. The above is one of the recommended information to be included in the ship’s manoeuvring booklet, as per IMO Resolution A.601(15). In sea practice, the manoeuvring characteristics in wind, as wind forces and moments, course-keeping limitation, and drifting under wind influence are fare from these estimated. The results obtained during the several years of practice in ship’s exploitation are included in this paper.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 3; 623-626
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Hazard from Damaging Wind Gusts in the Siedlce Area
Autorzy:
Radzka, Elżbieta
Olszewska, Eliza
Powiązania:
https://bibliotekanauki.pl/articles/2173241.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
wind direction
wind speed
wind gust
hazard
Opis:
The average daily values of wind speed and wind gust speed in the years 2001–2018 in Siedlce were analyzed. In the study area, the frequency of individual wind directions was determined and, according to criteria set by the Government Centre for Security, the frequency of hazards from damaging wind gusts was evaluated. The following wind gusts were considered: >20 m/s, 25 m/s and 35 m/s. It was found that, in the Siedlce area, the prevailing wind direction was west-south-westerly (WSW), and the average annual wind speed in the long-term study period was 2.99 m/s. March, April and May were the months when the highest speeds of maximum wind gusts (>35 m/s) were recorded. Extreme wind gusts the speed of which poses a hazard to the environment, national economy as well as human life and health, occurred in both the cold and warm seasons of the year.
Źródło:
Journal of Ecological Engineering; 2022, 23, 7; 192--196
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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:
Wind Power as a Renewable Energy Source
Autorzy:
Radzka, Elżbieta
Rymuza, Katarzyna
Michalak, Anna
Powiązania:
https://bibliotekanauki.pl/articles/124283.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
renewable energy sources
wind speed
wind direction
wind power technology
Opis:
The work presents a description of wind speed and direction in terms of using wind power as a renewable energy source. The wind power in Poland and at the Zawady EF was characterised. Observations were collected from 2002 to 2006 by an automatic meteorological station installed at the Zawady Experimental Farm (EF). Average monthly and yearly frequencies of winds blowing from individual directions were determined, and the average monthly wind speed was analysed. The most frequently recorded wind speed ranged from 2 to 4 m/s (light wind), and the least frequent winds blew at the speed of more than 10 m/s (strong wind). The cold season of the year saw winds blowing at the greatest speed (December, January and February), it being the lightest in the summer months (June, July and August). Wind rose analysis (2002–2006) revealed that at Zawady Experimental Farm, the westerly wind was the most frequent. A wind turbine has a limited capacity of wind power use, so only a small portion of energy supplied by wind may be converted into usable energy.
Źródło:
Journal of Ecological Engineering; 2019, 20, 3; 167-171
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of wind structure and aspect ratio of circular cylinders on mean wind pressure coefficient
Autorzy:
Lipecki, T
Jamińska, P.
Powiązania:
https://bibliotekanauki.pl/articles/1933975.pdf
Data publikacji:
2012
Wydawca:
Politechnika Gdańska
Tematy:
wind tunnel
mean wind pressure coefficient
circular cylinder
wind structure
aspect ratio
Opis:
The paper presents analyses of the mean wind pressure coefficient distribution on the surfaces of circular cylinders. The experiment was performed in a boundary layer wind tunnel in the Wind Engineering Laboratory in Cracow, Poland. Three models were examined in the wind tunnel. The influence of the aspect ratio and wind parameters (mean wind speed profile, turbulence intensity profile, power spectral density functions) on the mean wind pressure coefficient distribution and its standard deviation was considered during the tests.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2012, 16, 3-4; 203-218
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Method for wind turbine selection basing on in-field measurements
Autorzy:
Wolniewicz, Katarzyna
Kuczyński, Waldemar
Zagubień, Adam
Powiązania:
https://bibliotekanauki.pl/articles/95235.pdf
Data publikacji:
2019
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
wind turbines
wind power
wind conditions
turbiny wiatrowe
energia wiatru
warunki wiatrowe
Opis:
The following paper covers a method for wind turbine selection with a horizontal axis of rotation basing on real in-field measurements of wind conditions. The basic meteorological properties and characteristics obtained during measurement campaigns using necessary equipment as well as the used methodology are vital for successful investment in wind farm. The main goal of in-field investigation is to collect meteorological data using a measurement mast installed at the possible future wind farm location. The conducted measurement campaign provided wind directions, velocities and wind blast parameters. The measurements were conducted in the northern Poland using measuring system installed on 100 meter high mast. The system was equipped with all devices necessary to measure and record the basic wind parameters. The reliability of measurements was verified using statistical data for the Weitbull distribution and the wind rose. In this way, the energy potential of raw air stream that could possibly drive a wind turbine was determined. Among 6 pre-selected wind turbine types, the optimal one for a given location was proposed.
Źródło:
Journal of Mechanical and Energy Engineering; 2019, 3, 1; 77-84
2544-0780
2544-1671
Pojawia się w:
Journal of Mechanical and Energy Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wind effect simulation system in model tests of ship manoeuvrability
Autorzy:
Bednarek, A.
Jóźwiak, R.
Powiązania:
https://bibliotekanauki.pl/articles/258700.pdf
Data publikacji:
2007
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship manoeuvrability
wind
wind effect simulation
Opis:
Dependence on hydro-meteorological conditions in the test area is an “Achilles’ heel” of physical experiment used for assessment of ship manoeuvrability. Aerodynamic forces and moments generated on the ship upperworks distort significantly the measured values. The paper presents new testing tool in the form of physical simulation of wind effect enabling quantitative evaluation of distortion of the measurement results. Another feature of the system enabling compensation of real atmospheric conditions prevailing during the experiment is also presented. The wind effects simulation arrangement includes board data acquisition and processing system, automatic control system and executive system consisting of industrial fans.
Źródło:
Polish Maritime Research; 2007, S 2; 64-67
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiany składowej strefowej prędkości wiatru (U-wind) na wschód od Svalbardu (1981-2005)
The changes of zonal wind speed component (U-wind) east of Svalbard area (1981-2005)
Autorzy:
Kruszewski, G.
Powiązania:
https://bibliotekanauki.pl/articles/260777.pdf
Data publikacji:
2007
Wydawca:
Stowarzyszenie Klimatologów Polskich
Tematy:
składowa strefowa prędkości wiatru (U-wind)
temperatura powietrza
Svalbard
zonal wind speed component (U-wind)
air temperature
Opis:
Praca charakteryzuje składową strefową prędkości wiatru w trzech gridach usytuowanych po wschodniej stronie Svalbardu oraz jej związki z temperaturą powietrza na stacjach zachodniego wybrzeża Spits-bergenu. W rejonie położonym na wschód od archipelagu obserwuje się dominację cyrkulacji wschodniej, której natężenie wyraźnie wzrasta przy przemieszczaniu się na południe. W przebiegu rocznym stwierdzono nasilanie się cyrkulacji wschodniej w miesiącach zimowych i osłabianie latem, przy czym zmienność wartości U-wind w mie-siącach chłodnej pory roku jest największa. Przewaga cyrkulacji zachodniej zaznacza się latem przez okres od jednego (na 75°N) do pięciu miesięcy (na 80°N), a jej natężenie rośnie wraz z szerokością geograficzną.
The study presents variability of zonal wind speed (U-wind) in three grids 2.5x2.5° situated in the vicinity of the eastern coast of Svalbard in period 1981–2005. Gridded surface data from NCEP Reanalysis Derived data provided by the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA from their Web site at http://www.cdc.noaa.gov/ were used for statistical analysis. In analysed area negative values of U-wind are typical. Annual average eastern air-flow is much stronger in the south (–1.54 m/s in grid [75, 30]) than in north (–0.31 m/s in grid [80, 30]) – see fig. 1 and 2. The biggest interannual changeability of U-wind values is also observed in lower latitudes. Significant decreasing trends were found in annual U-wind values in grid points [80, 30] (–0.05 m/s by year) and [77.5, 30] (–0.04 m/s by year). During the year eastern air-flow reach the maximum in winter months. In summer time easterly circulation is weaker. Positive U-wind values (western air-flow) prevails in July (grid [75, 30]); June, July and August (grid [77.5, 30]) and from May to September in grid [80, 30]. Intensity of western air-flow increase with latitude too. The biggest changeability in monthly U-wind values in all grid points was observed in February. Decreasing trends in monthly U-wind values were found in [80, 30] grid in February (–0.13 m/s by year) and in [77.5, 30] grid in March and May (–0.11 and –0.08 m/s by year). Correlations between U-wind and zonal westerly circulation index W values for Spitsbergen area (given by Niedźwiedź, 2006) are strong for all grids and seasons, but the strongest were noted in grid [75, 30] – linear correlation coefficient from r = +0.75 (winter) to r = +0.87 (summer) – see fig. 5. Some relations between U-wind and monthly air temperature in Svalbard-Lufthavn and Ny Alesund were noticed too (fig. 6). The strongest negative correlations were found in July, May and April.
Źródło:
Problemy Klimatologii Polarnej; 2007, 17; 77-85
1234-0715
Pojawia się w:
Problemy Klimatologii Polarnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Considerations regarding qiling system for offshore wind turbines
Autorzy:
Panaitescu, M.
Panaitescu, F. V.
Panait, P. G.
Scupi, A.
Powiązania:
https://bibliotekanauki.pl/articles/24201414.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
modeling and simulations
simulation study
wind turbine
lubricating oil system
wind loads
wind influence
floating wind farms
lubricating oil analysis
Opis:
Power from renewable sources would play a key role in the future of electricity .The wind energy is one of the goal of EU's commitment, which want to develop offshore wind potential [1], [2]. Lubrication of wind turbines is very important for maintenance [3] . The purpose of this paper is to present some considerations about monitoring oiling system. This system monitors kinematic data in real time. The importance of monitoring real data with this system help us to simulate lubrication for various types of wind turbine reducers in order to choose the optimal form of the lubrication system and for good maintenance.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 3; 563--567
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comparison of ASCAT wind measurements and the HIRLAM model over the Baltic Sea
Autorzy:
Sluzenikina, J.
Mannik, A.
Powiązania:
https://bibliotekanauki.pl/articles/48369.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
backscattering
Baltic Sea
HIRLAM model
numerical weather prediction
ocean surface
sea surface
stormy season
wind direction
wind field
wind scatterometer
wind speed
Opis:
This paper presents a comparison of the wind data measured by the ASCAT polar-orbiting satellite scatterometer and winds forecast by the numerical weather prediction model HIRLAM in the Baltic Sea region during the stormy season in 2009. Two different resolution models were used in the comparison. Mutual quality and uncertainty characteristics of the measurements and predictions are determined. The results of the study show that the ASCAT wind data are well correlated with the HIRLAM predicted winds, which raises the credibility of both data sources in operational and hindcasting applications over the Baltic Sea. A case of phase error in a HIRLAM forecast of cyclonic activity over the Baltic Sea is discussed.
Źródło:
Oceanologia; 2011, 53, (1-TI)
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania modelowe działania wiatru na budynek wysoki
Wind tunnel tests of wind action on a high-rise building
Autorzy:
Bosak, G.
Powiązania:
https://bibliotekanauki.pl/articles/390025.pdf
Data publikacji:
2014
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
pomiary ciśnień wiatru
tunel aerodynamiczny
budynek wysokościowy
interferencja aerodynamiczna
wind pressure measurement
wind tunnel
high-rise building
wind action
aerodynamic interference
Opis:
Praca przedstawia wyniki badań modelowych w tunelu aerodynamicznym działania wiatru na wysokościowy budynek projektowany przy ul. Puławskiej 2 w Warszawie. Badania przeprowadzono w Laboratorium Inżynierii Wiatrowej Politechniki Krakowskiej. Mierzono ciśnienia wiatru na powierzchniach zewnętrznych modelu budynku. Celem pracy jest określenie rozkładów ciśnienia wiatru na ścianach zewnętrznych modelu budynku przy różnych kierunkach wiatru, przeprowadzenie analiz studialnych oddziaływania wiatru na budynek oraz wyznaczenie podstawowych schematów ekwiwalentnego oddziaływania wiatru będących podstawą obliczeń statyczno-wytrzymałościowych konstrukcji.
The paper summarizes the results of wind tunnel tests of a wind action on a high-rise building design in Warsaw. Measurements were accomplished in Wind Engineering Laboratory of Cracow University of Technology. Wind pressures on external surfaces of the building model were acquired. A study of the character of the wind action on a tower of the building was the main aim of the paper. A triangle shape with rounded corners of the cross section of the tower and a complex group of neighbor buildings support aerodynamic analysis in a wind tunnel. Wind pressure coefficients on the external building surfaces and the global horizontal wind action on the building tower on full scale were analyzed.
Źródło:
Budownictwo i Architektura; 2014, 13, 2; 163-171
1899-0665
Pojawia się w:
Budownictwo i Architektura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bioactive Ceramic Coating Solution for Offshore Floating Wind Farms
Autorzy:
Sanz, D. S..
García, S.
Trueba, L.
Trueba, A.
Powiązania:
https://bibliotekanauki.pl/articles/1841491.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
offshore structures
bioactive ceramic coating
ceramic coating
offshore floating wind farms
maritime wind farms
floating wind farms
offshore wind farms
offshore platform
Opis:
Biofouling is a natural phenomenon that consists of the accumulation of living organisms on an artificial surface submerged or in contact with water like Offshore platforms. This study highlights the need for offshore floating wind farms structures to consider the choice of material used in offshore applications to minimize microbial-associated and corrosion problems. For this purpose, differences in the total of seawater biofouling attached on two coated paints and three ceramic coatings in carbon steel for offshore structures were evaluated and compared. All ceramic coatings were made of incorporating, by electrophoretic deposition, active ceramic particles against biofouling as copper, silver, zinc and titanium. This experiment consisted of testing ceramic coatings and conventional paints in a real environment with high biological activity and at the same time in a shallow marine environment for a period of 1 year, which provided positive comparisons with the standard system (ASTM-D3623) for using in protecting offshore marine structures.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 2; 407-412
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wind power plants : types, design and operation principles
Autorzy:
Tywoniuk, A.
Skorupka, Z.
Powiązania:
https://bibliotekanauki.pl/articles/244681.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
wind energy
wind power plants
energy conversion
renewable energy
Opis:
Many countries worldwide support green energy production on large scale mostly by solar or wind energy subsidizing manufacture and operation of such systems. During the last two decades, there has been significant increase in wind energy production globally. Statistics show continuously growing investments in the development and installation of wind turbines and farms. Currently, wind energy is the second most important source of renewable energy after water energy. By 2016 global cumulative installed wind capacity surpassed 432 k MW [GWEC]. In last several years, most dynamic growth in wind power generation investments was recorded in Asia. Europe, in comparison, has less impressive but steady growth in wind power plants through the years. In this article, authors present global demand on energy in comparison to efficiency of wind power plants in relation to the local and global location as well as to the scale of installed system. Authors also present statistical data concerning wind power plants development. General classification, using number of criteria (ex. power output, construction size, rotor axis orientation and other) of wind to electric power converting devices is presented. Various types of devices, which authors describe in this article, can perform conversion of wind blow energy to the electric energy using different yet similar methods.
Źródło:
Journal of KONES; 2018, 25, 3; 479-487
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena zasobów energii wiatru na potrzeby małej energetyki wiatrowej
Wind energy resource assessment for the needs of small wind energy
Autorzy:
Michalak, P.
Powiązania:
https://bibliotekanauki.pl/articles/320186.pdf
Data publikacji:
2009
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
energia wiatrowa
elektrownie przydomowe
wind energy
small wind turbines
Opis:
Wykorzystanie odnawialnych zasobów energetycznych ma, przy pewnych ograniczeniach, niewątpliwe walory środowiskowe. Jedną z popularniejszych technologii wykorzystywanych przez odbiorców indywidualnych są elektrownie wiatrowe małych mocy (do kilku-kilkunastu kilowatów). Charakteryzują się one prostą konstrukcją, coraz bardziej przystępną ceną oraz dobrymi parametrami technicznymi, co czyni je interesującym źródłem energii dla inwestorów indywidualnych.
Use of renewable energy resources is, under certain restrictions, outstanding environmental qualities. One of the most popular technologies used by individual customers are small wind power (up to several-dozen kW). They are characterized by simple construction, more affordable price and good technical parameters, which makes them an interesting source of energy for individual investors.
Źródło:
Elektrotechnika i Elektronika; 2009, 28, 1--2; 14-19
1640-7202
Pojawia się w:
Elektrotechnika i Elektronika
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
Tytuł:
The wave influence on wind pressure fluctuation of drifting rescue units
Autorzy:
Smolarek, L.
Powiązania:
https://bibliotekanauki.pl/articles/259990.pdf
Data publikacji:
2007
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
drifting rescue units
wind pressure
wind pressure stochastic model
Opis:
In the article the stochastic model of wave influence on wind loading fluctuation of drifting rescue units is presented. Wind speed is the single most important factor when trying to determine basic wind pressure. Wind motion is turbulent, and it is difficult to give a concise mathematical definition of turbulence. However, it is known that wind turbulence exists due to the lower viscosity of air in comparison with water. Any air motion faster than 4 km/h is turbulent; i.e., air particles move erratically in all directions. Basic wind pressure is affected by the uncertainty effect caused by the likelihood of the wind hitting the drifting rescue unit from any given direction. This parameter is known as the directionality effect. The pressure exerted by strong winds on the life raft is a function of the dynamic part of Bernoulli’s equation, known as basic pressure, which is modified by the following factors: wind direction according to a life raft axis system, wind speed, the life raft height, wave height, wave slope angle. Two random factors were considered. The first one is the drifting rescue unit heeling angle to the horizontal plane. The second one is connected with the position of drifting rescue unit on wave slope. The results obtained during laboratory tests in wind tunnel were used to model wind pressure on a life raft. The measurements of a life raft movement on waves obtained during sea experiments were used to estimate the distribution of pitch and roll angle. The position of drifting rescue unit on a wave slope has uniform distribution. The wind load coefficients for life rafts presented in this paper are derived from wind tunnel tests in uniform flow obtained at the Aviation Institute in Warsaw. Data of life raft movements on waves have been collected during full size experiments at sea. Data from wind tunnel test are the basis of knowledge of wind loads on drifting rescue units.
Źródło:
Polish Maritime Research; 2007, S 2; 98-101
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The relationship between the parameters of wind speed
Autorzy:
Halchak, V.
Syrotyuk, S.
Syrotyuk, V.
Powiązania:
https://bibliotekanauki.pl/articles/411281.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
wind
wind speed
distribution function
mean values
Opis:
This paper analyzes the methods of mapping the velocity of wind flow, and using them to measure the performance of wind turbines. The dependencies of the two-parameter Weibull distribution function on the scale parameter are analyzed. It should be noted that the parameters of the distribution function, and therefore the repeatability are probabilistic. The characteristics of Rayleigh distribution for different values of the scale are presented. The analytical-expressions and peculiar velocities of the integer and half-integer values for the shape parameters reflect the relationship between the mean, mean square, average-cubic, and estimated wind-speeds. It is shown that the ratio of the square of the average speed to the standard, regardless of the values of the shape-parameters and the scale-ratio can be replaced by the corresponding G-functions.The theoretical-calculation to design the medium-speed and its relation to the current and average speeds for the Weibull distribution with a half-integer values and the shape-parameter is presented. It is proved that the recommendation considers the speed of the medium design to be proportional to the mean, and permissible only if the distribution is close to normal. It has been established that the ratio between average wind velocities (in the case of Weilbull distribution parameter) are determined only by its form and the average velocity through the scale parameter. Weibull distribution allows to facilitate and simplify their calculation methodology so as to assess the energy parameters of wind turbines.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2015, 4, 4; 95-100
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-25 z 1341

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