The wind cup type wind speed sensor is a very common wind speed sensor. The propeller is generally installed at the front of a wind vane, so that its plane of rotation is always facing the direction of the wind, and its speed is proportional to the wind speed. Usually the propeller-type speed sensor measures the wind speed by rotating a group of three-blade or four-blade propellers around a horizontal axis. The blade system aligned with the air flow is subjected to the wind pressure, and a certain torque is generated to rotate the blade system. The working principle of the propeller anemometer is just the opposite. The electric fan is driven by the motor to rotate the fan blades, creating a pressure difference between the front and back of the blades, which promotes the air flow. It uses the kinetic energy of the flowing air to push the sensor’s propeller to rotate, and then calculates the air flow rate through the terminal device by the speed of the propeller. Propeller wind speed sensor is mainly composed of propeller blade, sensor shaft, sensor bracket and magnetic induction coil. wind speed sensor types Propeller wind speed sensor It is mainly used in meteorology, agriculture, ships and other fields, and can be used outdoors for a long time.
The wind speed sensor types is roughly divided into mechanical (mainly propeller type, wind cup type) wind speed sensor, hot air type wind speed sensor, pitot tube wind speed sensor and ultrasonic wind speed sensor based on acoustic principle, the shell is made of high quality aluminum alloy profile or polycarbonate Composite material, rain-proof, corrosion-resistant and anti-aging, is a smart instrument that is easy to use, safe and reliable. For example, taller buildings are subjected to greater wind loads than shorter ones.Wind speed sensor is a common sensor that can continuously measure wind speed and air volume (air volume = wind speed x cross-sectional area). Shape of the structure - this refers to properties such as the structure's height, width, and geometry. For instance, a wind hitting at 90° generates greater loads than the same wind at 45°. Impact angle - the angle at which the wind hits the structure, measured from the horizontal. You can use the air density calculator to determine air's density at other conditions🌬 For conditions significantly different than these, it is better to use the local density value to get more accurate results. Wind speed - winds at higher speeds generate greater loads.ĭensity of the air - as a general practice, the air density is taken as 1.225 kg/m 3 / 0.0765 psi, which corresponds to a temperature of 15☌ / 59☏ and sea level altitude. The following are the key elements that influence lateral wind load: In this article, we're only focusing on this last type, the lateral wind load.
Wind speed windows#
Air entering through windows or other openings can flow beneath the roof and push it upwards. Uplift load - this wind load on roofs generates a lifting effect.Air carries energy as it moves freely through space, and when it encounters a barrier, such as a wall, this energy is suddenly applied against its surface in the form of force or pressure (force per unit of area). In simple terms, wind load is the force or pressure that wind exerts on the outside of a structure.
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