Wind direction and force indicators. G. R. FOUNTAIN. July 2,1964 [June 14, 1963], No.23824/83. Heading G1R. In a wind direction and speed indicator a rotatably mounted wind vane 1 is connected to a bridge piece 13 which carries brushes 4, 5 to complete a circuit to one of a ...
Wind direction and force indicators. S. B. WILKS. March 12,1964 [May 21, 1963], No. 20117/63. Heading G1R. In a wind speed and direction indicator a circular mast 10 is universally pivotally mounted by a ball 11 on a board 12 and is attached to three equally spaced fluid filled ...
wind. Wind pressure enters and is transmit-ted through plastic connecting tubing to red fluid inside the indicator. Fluid level rises and falls in response to changing wind speed. Scale calibrations on the indicator show the wind speed corresponding to var-ious fluid levels. For wind direction,...
Windsock with wind speed indicators 优质文献 相似文献 参考文献 引证文献WIND DIRECTION INDICATOR This invention relates to a wind direction indicator for airports and the like, which comprises, in using position, an essentially horizontal windsock, that is made of a fabric or the like, and that is...
The results indicate that the balcony geometry can greatly affect the mean wind speed on balcony spaces and the local and façade-averaged mean pressure coefficient (Cp). The presence of balconies can increase the façade-averaged Cp over the windward and leeward façades by 5.2% and 8.9%,...
Wind speed and wind direction forecasting using echo state network with nonlinear functions Renew. Energy (2019) X.-c.Fanet al. Analysis and countermeasures of wind power curtailment in China Renew. Sustain. Energy Rev. (2015) Y.Haoet al. ...
reliability of forecasts of wind speed and direction. itopf.com 不过,计算机模型和简单人工计算的准确 性都取决于所用水文数据的准确性以 及 风 速和风 向预测的可靠性。 itopf.com However, all buildings are required to withstand a dynamic motion caused by a wind gust of 250 km per hour. leg...
Figure 6.1.Changes in Leading Indicators of Wind Power Generators, 1998–2003 Source: Berkeley Library Database. Low-speed wind turbine technology.A typical double-fed turbine has a start-up wind speed of 4 m/s. However, the wind across areas near cities and someoffshore locationshas a lower...
It is an experimental method for evaluating the performance and stability of photovoltaic modules and flexible mounting system under different wind conditions. During the test, the photovoltaic modules and flexible mounting system are placed in a wind tunnel, where wind speed and direction are adjusted...
11. A wind speed and direction indicator comprising: a datum element comprising: (a) weight means for adding mass to said datum element; and (b) marker means for producing a visual indication of the location of said datum element; a status element connected to said datum element by ...