Anemometer
Anemometer comes from the word anemos and is Greek for wind. This is an old instrument that …
An anemometer is used to measure wind power, or a lot more precisely wind velocity and/or pressure. The modern anemometer is an electrical device that calculates information that is communicated to it by some other instrument e.g. a wind vane. A high good quality and modern day anemometer measures each the wind velocity and pressure. There are nevertheless different kinds that performs this activity differently.
Anemometer comes from the word anemos and is Greek for wind. This is an old instrument that was invented in the 15Th century, by a man named Leon Battista Alberti. His model consisted of a disk rotated by the force of the wind. This model was of course mechanical as opposed to the modern electrical. A man named Robert Hooker, later on re-invented the anemometer and is often mistakenly deemed to be the inventor of this instrument.
The anemometer is often combined with a wind vane when utilized on wind mills. The wind vane communicates the wind speed and direction to the anemometer that tends to make the calculations and passes the information into wind turbine controller, in turn the controller tells the yaw motor to turn the nacelle so that the rotor faces the wind.
Anemometers can be divided in two classes, there are these that measure the velocity of the wind and there are these that measure the pressure of the wind. A high good quality and modern anemometer will give data about each of these quantities. Down beneath there is a list of anemometers that reaches the very same purpose by utilizing distinct technologies.
Velocity Anemometers:
Windmill anemometers
These are the kind that is attached to a wind mills.
Hot-wire anemometers
This kind makes use of a fine wire heated up to some temperature above the ambient. When the wind flows past the wire and cools the wire down a connection can be obtained and a calculation produces appropriate data.
Laser Doppler anemometers
Uses a laser beam to measaure the wind speed and direction.
Cup anemometers
The simplest kind of them all and invented in 1846 by John Thomas Romney Robinson of Armagh Observatory
Sonic anemometers
Uses sound waves to measure wind speed and direction.
Pressure Anemometers:
Plate anemometers
This is the simplest kind of anemometers and consists of a circular or square faced into the wind. This kind of instrument is not the most precise.
Tube anemometers
Wind Vane
The wind vane also known as climate vane is a movable device that is attached an elevated object such as a roof or wind mill. It can be utilised standalone or mounted attached to some other instrument such as an anemometer. The wind vane has to be positioned well above the ground to obtain an correct reading.
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