نتایج جستجو برای: wind data

تعداد نتایج: 2475878  

Abstract. One of the major problems in using wind energy is that wind-generated electricity is more unstable than electricity generated by other sources, and therefore integrating wind energy use with traditional power generation systems can be a challenge. This problem can be effectively reduced by having accurate information about the mean and wind speed volatilities. Therefore, in this paper...

Journal: :Technometrics 2020

2013
J. PARK D. HARTMANN

Structural responses and power output of a wind turbine are strongly affected by the wind field acting on the wind turbine. Knowledge about the wind field and its variations is essential not only for designing, but also for cost-efficiently managing wind turbines. Wind field monitoring collects and stores wind field time series data. Over time the amount of data can be overwhelming. Furthermore...

2009
M. Portabella A. Stoffelen M. Belmonte A. Verhoef J. Verspeek J. Vogelzang

The Advanced scatterometer, ASCAT, on MetOp-A was launched on 19 October 2006 as the third wind scatterometer currently in space joining up with the ERS-2 and the SeaWinds scatterometers. Scatterometers measure the radar backscatter from wind-generated cm-size gravity-capillary waves and provide highresolution wind vector fields over the sea with high quality. In this paper we show progress in ...

Journal: :asian journal of sports medicine 0
gholamreza roshan phd; department of geography, faculty of physical geography, university of tehran, tehran, ir iran gafar mirkatouli phd; department of geography and urban planning, university of golestan, gorgan, ir iran ali shakoor phd; department of geography, islamic azad university, marvdasht branch, marvdasht ir iran vahid mohammad-nejad phd; department of geography, university of urmia, urmia, ir iran

purpose estimating wind chill index as one of the indexes effective in body comfort, specifically for athletes and tourists interested in winter sports. methods meteorology data including temperature and the percentage of relative humidity of 6 synoptic stations of chaharmahal-bakhtiyrai province, iran from 1990 to 2007 were extracted from iranian meteorology site. in order to calculate the val...

Journal: :ماشین های کشاورزی 0
مهرداد جلالوند حسین باخدا مرتضی الماسی

in order to restrain the potential of wind energy, the first step is to determine the wind energy potential. in this study the wind data was used from the three-hour frequency recording of 10-year period (2002-2011). to predict the occurrence probability of each wind speed, the two-parameter weibull function was used. the goodness of fit test by chi-square test showed that the wind speed distri...

ژورنال: انرژی ایران 2018

Wind is one of the cleanest and cheapest renewable energies. One of the wind energy production technologies is use of small wind turbines installed in urban areas. However, installing these turbines in urban areas is associated with problems such as low wind speed and turbulence but if installed in the wrong location, their generated electricity is zero. In this study for the use of wind energy...

2014
Andrew MITCHELL

Wind farm noise compliance assessments require measurement of the wind farm noise under full operating conditions. Normal wind farm operation typically includes periods where one or more wind turbines may be unable to operate, due to maintenance requirements, grid restrictions, or other factors. For a large wind farm with many wind turbines, or in situations where cumulative noise impacts from ...

Journal: :Remote Sensing 2016
Jianyong Xing Jiancheng Shi Yonghui Lei Xiang-Yu Huang Zhiquan Liu

The first Chinese operational Ku-band scatterometer on board Haiyang-2A (HY-2A), launched in August 2011, is designed for monitoring the global ocean surface wind. This study estimates the quality of the near-real-time (NRT) retrieval wind speed and wind direction from the HY-2A scatterometer for 36 months from 2012 to 2014. We employed three types of sea-surface wind data from oceanic moored b...

2015
Zijun Zhang ZIJUN ZHANG Yong Chen

Improving performance of wind turbines through effective control strategies to reduce the power generation cost is highly desired by the wind industry. The majority of the literature on performance of wind turbines has focused on models derived from principles versed in physics. Physics-based models are usually complex and not accurate due to the fact that wind turbines involve mechanical, elec...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید