Ingafgrinn Macabre
Can't get enough of FH
- Joined
- Jan 4, 2004
- Messages
- 3,155
********* Continuation of previous post *********
=========== Solar power calculation ===========
Sahara Solar Power Density exceeds 2200 [kWh/(m²yr)] *3
There are 8766 hours in a year.
This equates to a solar power density of
2200/8766 = 0.25 [kW/m²]
An average car uses 0.75 [kW]
Thus an average car needs: 0.75/0.25 = 3[m²]
There are somewhere between 600 and 800 million cars in the world today.
So we'd need 800,000,000 * 3 = 2,400,000,000 [m²] land area in the sahara to feed them all.
This is a square of 49*49 km
=========== Conclusion ===========
Those "I heard someone calculate that x needs y [incredibly high number] of z" stories generally can use some verification. Most are untrue, or people have been creative with numbers. This is how Greenpeace and other anti-groups have been working all along.
[QED]
=========== Solar power calculation ===========
Sahara Solar Power Density exceeds 2200 [kWh/(m²yr)] *3
There are 8766 hours in a year.
This equates to a solar power density of
2200/8766 = 0.25 [kW/m²]
An average car uses 0.75 [kW]
Thus an average car needs: 0.75/0.25 = 3[m²]
There are somewhere between 600 and 800 million cars in the world today.
So we'd need 800,000,000 * 3 = 2,400,000,000 [m²] land area in the sahara to feed them all.
This is a square of 49*49 km
=========== Conclusion ===========
Those "I heard someone calculate that x needs y [incredibly high number] of z" stories generally can use some verification. Most are untrue, or people have been creative with numbers. This is how Greenpeace and other anti-groups have been working all along.
[QED]