On January 2, 2008, our province’s first wind turbine generator set was completed in Sanmenxia. The

(1) Wind energy is a source of energy that can be continuously obtained from nature, that is, renewable energy. Its advantages are pollution-free, environmentally friendly, energy-saving, and low cost.

(2) The pressure of the generator set on the ground at this time:

F=G=mg=80000kg×10N/kg=800000N;

The area of ​​the base :

S=πr2=3.14×(2m)2=12.56m2,

The pressure of the generator set on the ground:

P=

(3) The distance traveled by the air in one second is: S=6m;

The volume of this part of the air at this time is V=Sh=20m2×6m=120m3 ,

So the mass of air blowing through the blades at this time is m=ρv=1.29kg/m3×120m3=154.8kg;

(4) The estimated annual grid-connected electricity W= Pt=1500KW×360×24h=1.296×107KW?h,

∵Q discharge=W electricity=1.296×107KW?h=4.6656×1013J;

∴Requires standard coal Quality:

m=

Answer: (1) Renewable, non-polluting, environmentally friendly (reasonable);

(2) The pressure between the generator base and the ground is 6.37×104Pa;

(3) The mass of air blown to each blade per second is 154.8kg;

(4) 1555.2 tons of standard coal can be saved every year.