Wednesday, November 25, 2009

If Al Gore likes it, I must worry

People think about geothermal energy - when they think about it at all - in terms of the hot water bubbling up in some places, but two kilometers or so down in most places there are these incredibly hot rocks, 'cause the interior of the earth is extremely hot, several million degrees, and the crust of the earth is hot ...--Al Gore
Now the actual temperature of the earth's center ranges in the thousands of degrees (Celsius and Farenheit).

I'm not sure that geothermal energy is going to cool the surface temperatures of the earth. Let's say you've gone ice fishing, and set up your tent and sleeping bag for the night. The air in the tent is like the earth's atmosphere. The heat in the sleeping bag is like the hot interior of the earth. Now let's say you take some straws and stick them through various points of the sleeping bag, so you can harness the heat differential to generate power.

How does this make the air in the tent cooler? Not that global cooling isn't a real concern, as I pointed out a couple of years ago.

This reminds me of those 2007 fantasies of ethanol. And also Gore's footprint.

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