environment,energy,greenhouse,gas,carbon,dioxide,global,nuclear energy,clean energy,emissions,global climate change,environmental impacts, Nuclear Energy Can Save US: Solar Energy Just Will Not Do (Part One)

Nuclear Energy Can Save US--America�s 100 nukes equal four million barrels of oil per day.

Billions of lives and civilization itself may be at risk from the Global Warming & End of Cheap Oil, Crisis. Rising sea levels and rising oil prices could be the end of civilization as we know it. The problem is so huge that the most powerful answer, many nuclear plants, must be deployed. Currently, America‘s 100 nukes deliver the energy of four million barrels of oil per day. Wind and solar cannot do the job, and may delay the real answer too long. Still, all kinds of clean energy, plus conservation, plus reducing deforestation, will be needed to help the poor half of the world, and for civilization to survive through this century.

Thursday, November 8, 2007

Solar Energy Just Will Not Do (Part One)

The Sun delivers energy to the 200 million square miles of Earth's surface, that is thousands of times greater than we humans generate from all sources. The quantity is so huge that solar seems to be the answer to the coming energy crisis. However, it is spread too thin for use; like collecting barrels of oil from an oil slick on water. See coming posts for reasons.
This does not say we don't use solar energy. Along with heat from radioactivity in the Earth, solar keeps ground level temperature about 300-degrees C above absolute zero; distills and distributes water worldwide; drives the winds, and thermohaline ocean circulation to moderate air temperatures in all latitudes; and energizes plant life to provide food and forest products for humans and animals. We should be contented with this.
50% of solar energy reaches the ground. Currently a tiny bit is accessed by photovoltaic cells to give 0.066Q of the total 100Q (eia.doe.gov) that America generates from all sources. Note: this amount is only 2/3 of 1/10 of one percent of the 100Q .
The Sun delivers 175 petawatts (10 x 10 to 15th watts) to the disc of Earth every instant; by 8060 hours, this is 1500 petakilowatt-hours (PKWH) per year. Since 50% reaches ground, and the US is 1.5% of the world's land, we get 11 PKWH per year, versus 100Q (BTU).
One kilowatt-hour equals 3412 BTU (Google), so our 11 PKWH equals 3.7 times 10 to 18th BTU. Divided by our 100Q BTU (10 times 10 to 14th), solar is 3700 times as much as the energy we generate. All other nations (28.5% of Earth's land) get 19 times as much solar energy, but make only three times as much energy, 300Q. Their solar-to-human energy multiple is 6.5 times as much as ours, or 24,000.

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