What is the wind force per second14.2m?
Wind power refers to the strength of the wind blowing on an object. Generally speaking, according to various phenomena caused by wind blowing on objects on the ground or water surface, the wind force is divided into 13, with a minimum of 0 and a maximum of 12.
According to the national standard "Wind Grade" issued in June of 20 12, and according to the wind speed at the height of 10 meter in the standard meteorological observation field, the wind grade is divided into 18 grade in turn. There are three commonly used units to express wind speed, namely nautical mile/hour, meter/second and kilometer/hour, and the commonly used unit for typhoon forecast in China is meter/second.
Extended data:
Wind power is considered as an inexhaustible source of energy. Wind power generation is mainly used in the following aspects:
(1) Navigation aids
In the golden age of the development of motor boats, in order to save fuel and improve speed, ancient sailing AIDS have also been developed. Japan, a big shipping country, uses computer-controlled sails to assist navigation on 10,000-ton cargo ships, saving fuel 15%.
(2) Wind heating
With the improvement of people's living standards, the demand for heat energy in household energy is increasing, especially in Europe and North America at high latitudes, where boiling water is a big energy consumer. In order to meet the needs of domestic and low-grade industrial heat energy, wind heating has made great progress.
(3) Wind power generation
In China, there are many successful small and medium-sized wind power generation devices in operation.
Generally speaking, the third-grade wind is valuable. However, from an economic and reasonable point of view, the wind speed is greater than 4 meters per second for power generation. According to the measurement, when the wind speed of a 55kW wind turbine is 9.5m per second, the output power is 55kW. When the wind speed is 8 meters per second, the power is 38 kilowatts; When the wind speed is 6 meters per second, it is only 16 kw; When the wind speed is 5 meters per second, it is only 9.5 kilowatts. It can be seen that the greater the wind, the greater the economic benefits.
References:
Baidu Encyclopedia-Level of Wind