Telecommunication tower is an important component of the basic infrastructure of communication systems and thus preserving them in events of natural disasters - such as a severe earthquake - is of high priority. In past studies, researchers have mostly considered the effects of wind and earthquake-induced loads on 3-legged (triangular cross-section) self-supporting steel telecommunication tower...

The use of solar chimneys for energy production was suggested more than 100 years ago. Unfortunately, this technology has not been realized on a commercial scale, in large part due to the high cost of erecting tall towers using traditional methods of construction. Recent works have suggested a radical decrease in tower cost by using an inflatable self-supported tower consisting of stacked toroi...

Apartment complexes in various forms are built in downtown areas. The arrangement of an apartment complex has great influence on the wind flow inside it. There are issues of residents' walking due to gust occurrence within apartment complexes, problems with pollutant emission due to airflow congestion, and heat island and cool island phenomena in apartment complexes. Currently, the forms of int...

Abstract Wind is one of the most destructive external loads transmission lines, and typhoon-caused severe damage or even destruction electric power facilities occurred frequently. In order to research critical wind speed instability failure UHV tower-line coupling system under typhoon, line in Zhejiang chosen as subject a finite element model established. By using improved generalized force cal...

A downburst is one of the high-intensity winds that cause transmission tower failures. In recent years, downbursts have brought great disasters to economies and lives people all around world. this paper, dynamic stability tower-line system under a analyzed. The deterministic-random mixed model used generate wind field ANSYS software employed establish finite element system. response characteris...

Thermal power plant is one of the eight high water consumption industries in China, and circulating cooling largest project. Under increasingly severe situation resources measures must be taken to reduce evaporation loss, wind blowing loss pollution discharge natural ventilation tower. Based on comprehensive summary water-saving technology tower, we compared advantages disadvantages various tec...

Wind turbines reliability is affected by stochastic factors in the turbulent inflow and wind turbine structures. On one hand, the variability in wind dynamics and the inherent stochastic structures result in random loads on wind turbine rotor and tower. On the other hand, the inherent structural uncertainties caused by imperfect control of manufacturing process introduce unpredictable failures ...

The paper presents the transmission line dynamic response considering tower-conductor cable coupling under wind and rain load is presented. tower are modeled using Spectral Element Method. finite Method with different types of elements used for verification. Excitations, such as rain, researched in analysis results show variation OTL displacements each case. modulates close to point has a high ...

A Bowen ratio energy balance was conducted over a Tamarix ramosissima (saltcedar) stand growing in a riparian corridor along the Virgin River in southern Nevada. Measurements in two separate years were compared and contrasted on the basis of changes in growing conditions. In 1994, a drought year, record high temperatures, dry winds, and a falling water table caused partial wilt of outer smaller...

The emergence of wind energy as a potential alternative to traditional sources of fuel has prompted notable research in recent years. One primary factor contributing to efficient utilization of wind energy from a wind farm is the type of turbines used. However, selection of a specific wind turbine type is a difficult task due to several criteria involved in the selection process. Important crit...