wind measurement Articles

  • How Does a Water Flow Meter Work?

    A water flow meter is a device that measures the amount of water flowing through a pipe. There are several water flow meter technologies to choose from depending on the water measurement application, maintenance requirements, and budgetary terms.  Each of these types of water flow meters has a unique principle of operation, specific application benefits, and overall ...


    By Sierra Instruments, Inc.

  • New methods for measuring the wind

    Although computer models of wind flow over terrain have improved dramatically in the past few years, there is still no substitute for data recorded at the site. So you want to build a wind farm. Good for you. With the global drive towards a low carbon economy, it is surely the right way to go for many individuals, companies and, indeed, Governments around the world. As information from the ...


  • Why Levelized Cost of Electricity is an important measurement in wind

    As the wind industry continues to grow, it is faced with much opposition, and a lot of misinformation is being shared. Some of the biggest myths around wind is that the costs of building and installing wind turbines are too high (compared to the costs of other energy sources) and that the industry is overly subsidized. Many anti-wind lobbyists point out that subsidies and tax benefits are the ...


    By Orenda Energy Solutions Ltd.

  • Verification of wind energy related measurements with a SODAR system

    Abstract Complex terrain and growing wind energy converters (WEC) in wind parks generate increasing interest in determining wind profiles and turbulence besides the general forecast of annual energy production. Increasing hub heights and growing rotor diameters of advanced WEC make SODAR systems a valuable alternative to meteorological towers. SODAR systems provide wind profiles as well as ...

  • Measurements of wind-induced loss of solid precipitation: description of a Norwegian field study

    Precipitation measurements have a well-documented and mostly wind-dependent bias which is especially apparent during solid precipitation events. The resulting inaccuracy in precipitation data remains an area of concern in quantifying regional and global climate trends. As a high-latitude country, Norway has many solid precipitation events often accompanied by high wind speeds where the current ...


    By IWA Publishing

  • Noise Measurement

    Definitions Threshold and criterion levels The threshold level is the A-weighted sound level at which a personal noise dosimeter begins to integrate noise into a measured exposure. For example, if the threshold level on a sound level meter is set at 80 decibels (dB), it will capture and integrate into the computation of dose all noise in the employee's hearing zone that equals or exceeds 80 dB. ...


  • 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 ...

  • Amassing Wind Information

    Wind is a variable resource, but not an indecipherable one. Second Wind encourages harnessing the full range of wind sensing technologies that are available today. When it comes to wind information, much attention is focused on the choice of wind measurement technology and data collection practices in wind resource assessment and project design. Right now, wind data plays a limited role in the ...


  • Radar measurement in the North Sea

    Background / Task The NLWKN operates the barrier in the inland waterway of the river Ems. They are working with a dense monitoringnetwork which is required e.g. for the preservation of evidence in case of blocks for the protection against storm tides or if the water depth has to be increased to make the Ems navigable for big vessels coming from the dockyard. After an average a new radar ...


    By The OTT Hydromet Group

  • Online flow measurement

    Background The undershoot weir in Hohensaaten was built in 1913. It has three openings and regulates the discharge from the Oderbruch and from the Finow canal into the Hohensaaten-Friedrichsthaler-waterway. Moreover, it protects parts of the Oderbruch against Oder floods. The weir controls the waterlevels in the Havel-Oder-waterway and in the reach of Niederfinow- Hohensaaten. ...


    By The OTT Hydromet Group

  • Comparison between different dispersion models using wind-tunnel small-scale measurements

    In this paper, the results from a plume diffusion experiment on a small-scale model of a two-stack waste incinerator, carried out in a developed boundary-layer wind-tunnel, will be presented. A brief description of the tunnel, the measurement system, and the artificially developed neutral boundary layer is given. The experiments investigate ground-level concentration measurements and vertical and ...


    By Inderscience Publishers

  • Measurements and three-dimensional simulations of flow in a shallow reservoir subject to small-scale wind field inhomogeneities induced by sheltering

    Spremberg Reservoir is a small and shallow water body where wind sheltering along steep and densely vegetated sections of the shoreline is expected to produce small-scale inhomogeneities of the wind field across the water surface. The potential impacts of these inhomogeneities on the quasi-steady circulation in the main subbasin of the reservoir are investigated in this study by means of a ...


    By Springer

  • Advanced offshore measurements to support wind energy production, weather forecasting, and emergency response

    Sonoma Technology, Inc. (STI), with support from the Bureau of Ocean Energy Management, is leading a unique partnership of corporate, government, and university researchers to develop a marine environmental observations program in the Gulf of Mexico. The primary goal of this project is to develop a framework of advanced offshore measurements to support emergency response, oil and gas exploration ...

  • Performance-Based Measurement Systems

    Many of the Environmental Protection Agency's (EPA's) methods used to monitor air, water and soil for environmental contaminants prescribe step-by-step details on how the chemical analysis must be conducted and prohibit any deviations or variations. The EPA has recognized that monitoring equipment and technology have improved tremendously over the last few years; that environmental media do not ...


    By WSP | Parsons Brinckerhoff

  • What are the advantages of ultrasonic wind sensors?

    Whether mechanical, ultrasonic or laser wind measurements: All measuring methods have technical limits. While for mechanical wind sensors the measuring element – cups and vanes – itself predominantly produces a disturbance in the flow field, for ultrasonic anemometers a disturbance can be caused by the sensor holder or housing construction. Only optical methods, e.g. LDA (Laser ...

  • 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 ...


    By Gill Instruments Limited

  • On the application of miniSoDAR technology to wind energy

    Introduction In the late 1990’s wind turbines with nacelle heights exceeding 60 meters were introduced to the wind energy community. Initially, wind prospecting and siting studies continued to use 50-meter wind towers and extrapolate the measurement to the nacelle heights. It was quickly determined that this approach was not sufficient for the placement of these tall turbines. The next ...

  • Measuring a giant one step at a time

    Once construction is complete in 2013, the Columbus Upground Reservoir (CUGR) will be the largest continuously-lined lagoon on the planet, nearly twice as large as the lagoon currently holding that title. The sheer enormity of the project has been compounded with difficulties from the beginning of construction to make it one of the most challenging geomembrane-lined structures ever built. ...

  • How to measure the direction of current harmonics?

    If the generation side of the point-of-common-coupling (PCC) is essentially an islanded setup consisting of a few specific generators, then the amount of harmonics resulting from the generation "source" can be readily identified in a mathematical fashion from the relative impedance on the generation side of the PCC compared to the combined impedance on the load side of the PCC. (The source of ...


    By GoHz Inc

  • Wind Tunnel Balance System for Vehicle Aerodynamic Developments

    In vehicle development steps, optimization of aerodynamic properties is often carried out in wind tunnel facilities. The vehicle is placed upon the measuring platform of the balance. The wind tunnel balance now allows the precise measurement of six forces and moments induced by the air flow. The HORIBA wind tunnel balance system can be equipped with a moving ground system which makes the air flow ...


    By HORIBA Europe GmbH

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