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地球的核心失去热量吗?

将所有的钻井和挖掘使用地球的自然热地热能源影响地球的核心,使其降温?

如果是这样的话,它会导致一个冰河时代?如果不是这样,地球的核心如何保持其热吗?

回答

地球产生20 tw[1]在地幔热能从放射性衰变。这是温暖地球产生的数量,所以它应该给我们一个大概的想法,我们需要多少热量从地球上消除为了使影响地球内部温度。总结加热情况下地壳,现有~等量的热量来自两个来源:放射性衰变,剩余的热量从地球的创建[1]。大量的热冲击地球从太阳但会辐射退出;它并没有与内部温度[1]。[1]https://en.wikipedia.org/wiki/Earth%27s_internal_heat_budget的据我所知,wikki页面:当前在地球热量:~ 50%辐射~ 50%剩下的内部热量预算:地热能消费+ 47 tw转移从地壳和地幔之外[1]- 20 tw产生辐射=核心冷却速率核心冷却速率没有地热:0 + 47 tw - 20 tw = 27 tw 2017年全球消耗22000 TWh [2]。这意味着平均2.5太瓦的能源消耗。如果所有的地热,我们会增加地球的核心的冷却速率约10%。https://yearbook.enerdata.net/electricity/electricity-domestic-consumption-data.html[2]的基础上,如何迅速每个TW地热能冷却地球吗?我看着地球的质量,最丰富的元素,发现加权平均热容是关于1000 J /公斤/度c . 1 TW得到一个大概的想法的影响会使,我将使用这个数字,和平均内部温度3000度c来计算地球的热能,我将使用Q = M * c * dT我会考虑热窗口0 c和3000 c之间。 The difference in the earth's thermal energy between those points is on the order of 1.8x10^31 J. In one decade, a 1TW source generates 3.2x10^20 J. In order to have a 1% impact on the average internal temperature of the planet (30 degrees C for our window of analysis), a 1TW source would have to work full time until the sun consumed the earth in 5 billion years. I think this is awesome! I wanted to see how awesome though. What about the fact that humans seem to double their power demand every decade or so? I threw together a quick spreadsheet table and simulated it century by century to see how long it took to get measurable effects on the earth's temperature as our power demands go up through time. It turns out that if we were to convert all our power generation to geothermal today, and double our total global geothermal power generation every decade, we would get 8,400 years of clean energy before cooling the earth's core by 1%! We would have to make a change soon after though, because if we continued on like that, we'd totally deplete the earth's warmth in centuries. By that time though, we might even have powerful enough technology to reheat the earth artificially.

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