Only 59.3% of the energy of the wind can be converted into mechanical energy. The Commercially available wind turbine has about 40-50% of the wind energy into mechanical energy. Average Co2 footprint for Wind energy is 11 gCO2/kWh for onshore farm and 12 gCo2/kWh for the offshore farm.
Today the wind energy share 2.3% of the global energy demand and this is about 10% of the all renewable energy produced in this world. This data is tantamount to 0.19 kWh/person/day= 0.07 Human unit/person/day
Denmark has developed good amount of wind energy. The wind installed capacity in denmark is about 5 GW and the annual energy production is 14.13 TWh. Looking at the kWh/W, its only 2.8 kWh/W. The capacity factor comes out to (2.8/(365*24/1000) 0.32 only. In comparison with the capacity factor of hydro electricity 0.7, it can be concluded that the wind energy produces less electricity per installed capacity than hydro electricity. The amount of energy produced from wind turbine depends on the wind speed. The wind speed is dependent on daily and seasonal wind profile, terrain, and the height at which we extract energy from wind.
Power from wind turbine
E= 1/2 mv^2
m=density* volume
E/t= 1/2*ρ*A*v*v^2
Today the wind energy share 2.3% of the global energy demand and this is about 10% of the all renewable energy produced in this world. This data is tantamount to 0.19 kWh/person/day= 0.07 Human unit/person/day
Denmark has developed good amount of wind energy. The wind installed capacity in denmark is about 5 GW and the annual energy production is 14.13 TWh. Looking at the kWh/W, its only 2.8 kWh/W. The capacity factor comes out to (2.8/(365*24/1000) 0.32 only. In comparison with the capacity factor of hydro electricity 0.7, it can be concluded that the wind energy produces less electricity per installed capacity than hydro electricity. The amount of energy produced from wind turbine depends on the wind speed. The wind speed is dependent on daily and seasonal wind profile, terrain, and the height at which we extract energy from wind.
Power from wind turbine
E= 1/2 mv^2
m=density* volume
| =ρ*A*v*t |
P=(1/2) ρ*A*v^3
The power produced from wind turbine is proportionla to cube of wind velocity.
A turbine with rated power 1.5 MW is the power that can be produced by wind turbine at rated speed. The efficiency of turbine drastically reduces at low speed as well as high speed apart from the rated speed.
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