wind monitoring Articles
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Hourly NOx concentrations and wind direction in the vicinity of a street intersection
This study relates NOxconcentrations and wind (speed and direction) measured inside an asymmetric street canyon, with ambient wind. The monitoring site is located near a street intersection. The wind measured at the domestic airport located in the city, near the coast, has been considered as ambient wind. Wind direction at the monitoring site inside the canyon is mainly from the E, NE, W and NW ...
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National Energy Technology Laboratory - USA
The National Energy Technology Laboratory site in Morgantown, West Virginia, USA, maintains a 150-foot free standing meteorological tower with data collection points at ground level, 33 feet, 75 feet, and at 150 feet. The data collected at ground level is Air Temperature, relative humidity, total rainfall, and snow depth. The other stations monitor wind direction and speed. Additionally, air ...
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How a Lufft sensor helps to improve a solar car
After a successful collaboration between Lufft and the Punch Powertrain Solar Team in the Bridgestone World Solar Challenge of 2013 and 2017 (6th and 3rd place), both parties decided to extend the partnership. The World Solar Challenge is a race of 3020km straight through the Australian outback. It is considered as the world championship for solar car racing and takes place every two years. We ...
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Automated Oil Particle Analysis Helps Prevent Gearbox Failures
The major issue for premature failure in wind turbine gearboxes is bearing failure, which leads to gearbox failure. A wind turbine gearbox will not survive if the oil is not clean and especially if the hard ferrous particles are not removed from around the bearings. The LaserNet 230 particle counter and ferrous debris monitor has been shown to be an excellent analytical tool for end users to ...
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What is the Difference Between Wind Speed and Wind Run?
Where reliable data is available, WeatherSolve engineers often reference publicly accessible climate stations to inform wind fence design decisions. Wind data reported by these climate stations is generally presented on a wind rose; shaded polygons of varying size and shape plotted on a compass rose. However, the manner in which the data is presented, either as wind speed or wind run, can ...
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Automating oil particle analysis
Run up to 25 samples at one time The major issue for premature failure in wind turbine gearboxes is bearing failure, which leads to gearbox failure. A wind turbine gearbox will not survive if the oil is not clean and especially if the hard ferrous particles are not removed from around the bearings The LaserNet 230 particle counter and ferrous debris monitor has been shown to be an excellent ...
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Intrinsically safe ultrasonic wind sensor
The Gill Instruments Intrinsically Safe WindObserver™ is an ultrasonic wind sensor, developed specifically for use in hazardous areas and in particular for offshore applications. The sensor has no moving parts, utilising Gill Instruments’ advanced ultrasonic measurement technology to accurately monitor wind speed and direction. Approved to EEx ia IIC T5, this ultrasonic wind sensor is a ...
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What is OGI quantification?
OGI quantification is a measurement of Mass Flow Leak Rate (MFLR)(the size) of a leak or concentration in ppm. Challenges of OGI quantification: Quantifying leak rate using OGI is extremely challenging. EyeCSite algorithm takes many aspects into account. Quantifying a compound: In order to quantify a compound, the detected normalized contrast at each pixel is converted into a concentration path ...
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Wind measurement with high speed train operations, China - Case Study
The compact weather stations WS500-UMB and WS600-UMB from Lufft provides reliable wind measurements along high speed rail lines in China. As the trains travel at speeds of up to 400 km/h, wind speed-dependent control of train speeds is essential. For this purpose, wind measurement stations like the WS500-UMB and WS600-UMB are installed at 5 km intervals along the track. Measurement data are ...
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Finite element analysis of turbine generator rotor winding shorted turns
Abstract Online magnetic flux monitoring via permanently installed air-gap flux probes is a well- established technology to determine the presence of shorted turns in a turbine generator rotor winding. Flux measurements are normally performed using flux probes installed in the machine air gap (on a stator wedge) and connected to portable or permanently installed instruments. In this “flux ...
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Consequences of oversampling
Oversampling is generally perceived as an inefficient practice because of the redundancy it creates in the data, but rarely is it considered detrimental. The resulting increase in bandwidth seldom if ever, provides new information, as the signal is often badly attenuated and not very useful above a certain frequency. The decision to oversample is often based on the assumption that no undue harm ...
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Use of a parking garage as a hurricane evacuation 'Refuge of Last Resort'
When a hurricane evacuation is halted, large numbers of motorists may be stranded without official shelter. Multilevel aboveground parking garages may be feasible 'Refuges of Last Resort' (RLR). Our goal was to assess the relative safety of using a parking garage as an RLR through fieldwork on the wind patterns inside a parking garage during hurricane Isabel. Mean wind speed inside the second ...
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Weather Station at Kårstø Harbour, Norway - Case Study
A standard Aanderaa Weather Station(WS) is installed on an island close to the port on an existing mast structure. Here wind speed and wind gust in addition to wind direction is measured. An Aanderaa RDCP 600 Sea Current Profiler is installed on the sea bottom at 27 meter depth. This unit is configured to measure sea current speed and direction at the sea surface and at 6 meter depth. An ...
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Hydrodynamic evaluation of a full-scale facultative pond by computational fluid dynamics (CFD) and field measurements
Knowledge of the hydraulic behaviour is very important in the characterization of a stabilization pond, since pond hydrodynamics plays a fundamental role in treatment efficiency. An advanced hydrodynamics characterization may be achieved by carrying out measurements with tracers, dyes and drogues or using mathematical simulation employing computational fluid dynamics (CFD). The current study ...
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Effects of spatial filtering, prefiltering, and aliasing in measurements from applied technologies` Sonic K-Probe
The Applied Technologies' Inc. (ATI) K-probe measures wind components along three mutually orthogonal axes separated spatially from each other to minimize flow distortion errors. The sonic anemometer samples the wind at a 100-Hz rate but constructs 0.1-s (10-point) non-overlapping block averages to provide. a 10-Hz data train for internal processing. This digital prefiltering is designed to ...
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ADMS 5 Buildings & Complex Terrain Validation Baldwin Power Plant
1 Introduction The Baldwin Power Plant1 (Hanna and Chang [3]) was located in a rural, flat terrain setting of southwestern Illinois, USA, and had three identical 184-m stacks aligned approximately north-south with a horizontal spacing of about 100 ni. There were 10 SO2 monitors that surrounded the facility, ranging in distance from 2 to 10 km. On-site meteorological data were available during ...
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Gill MetPak II weather station used to protect maltese prehistoric temples case study
Weather data provided by the Gill MetPak II Weather Station increases understanding of the affects of weather and climate on stone structures. The Gill MetPak II Weather Station is being used as part of a comprehensive air monitoring system at a prehistoric temple site for the Maltese Department of Heritage, the government department responsible for the conservation of several Prehistoric temple ...
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Taking wind into account in the design of waste stabilisation ponds
Up to now, most investigations on the dependency of the fluid flow patterns and performance of waste stabilisation ponds (WSPs) on wind speed and direction and pond layout have been performed using 2D and 3D CFD steady state isothermal models. 3D non steady state models integrating thermal processes and boundary conditions taking into account the full influence of meteorological factors are ...
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Project - Ormazabal (Velatia) - MV cells monitoring in wind farms
CUSTOMER: Ormazabal (wwww.ormazabal.com) USER: Ormazabal LOCATION: Wind farms ENVIRONMENT: Remote Installations YEAR: 2018 Monitoring system with embedded communications for Medium Voltage cells in wind turbines, for the supervision of transformation centres in wind ...
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Air gap magnetic field – key parameter for synchronous and asynchronous machine fault detection
Abstract Calculations and measurements of a magnetic field at specific places in a machine air gap have been performed in order to determine magnetic field sensitivity to machine geometry and fault occurrence. Installation of measuring coils and a Hall sensor on and around the stator tooth, around stator yoke and the pole shoe has been considered. Firstly, a series of numerical simulations ...
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