Richard
JF-Expert Member
- Oct 23, 2006
- 14,939
- 20,396
We have alternative energy sources:
Lets start with wind farm.
How they work
Wind turbines generally have 3 blades and they rotate at 10-30 revolutions per minute. The blades face into the wind, the wind forces them to go round, which then spins a shaft inside the turbine, which is connected to a generator which produces the electricity.
The advantages
Wind power enables electricity to be produced in an environmentally friendly way the turbines don't produce chemical or radioactive emissions.
The ground on which the turbines are positioned can still be used for agricultural purposes such as animal grazing.
If the turbines need to be taken down, there is no damage to the environment and no residues are left behind.
The disadvantages
There might be some concerns from some people who are worried about wind farms being positioned in their area. The worries would be such as ruining the landscape because they generally have to be positioned on hills to get the maximum benefits of the wind.
Wind farms also take up much more space to produce the same amount of energy as other methods such coal-fire powered stations.
Wind farms can be costly to maintain and electricity produced by this method is more expensive than that produced by other means. The money would be better put into energy conservation.
Also the noise generated from wind turbines would be felt by some people who live very close to the wind farms.
The turbines can cause some slight electromagnetic interference, which can cause interference with television signals and some communications equipment, although this is thought now to be negligible.
Lets start with wind farm.
How they work
Wind turbines generally have 3 blades and they rotate at 10-30 revolutions per minute. The blades face into the wind, the wind forces them to go round, which then spins a shaft inside the turbine, which is connected to a generator which produces the electricity.
The advantages
Wind power enables electricity to be produced in an environmentally friendly way the turbines don't produce chemical or radioactive emissions.
The ground on which the turbines are positioned can still be used for agricultural purposes such as animal grazing.
If the turbines need to be taken down, there is no damage to the environment and no residues are left behind.
The disadvantages
There might be some concerns from some people who are worried about wind farms being positioned in their area. The worries would be such as ruining the landscape because they generally have to be positioned on hills to get the maximum benefits of the wind.
Wind farms also take up much more space to produce the same amount of energy as other methods such coal-fire powered stations.
Wind farms can be costly to maintain and electricity produced by this method is more expensive than that produced by other means. The money would be better put into energy conservation.
Also the noise generated from wind turbines would be felt by some people who live very close to the wind farms.
The turbines can cause some slight electromagnetic interference, which can cause interference with television signals and some communications equipment, although this is thought now to be negligible.