Couldn’t we have a lead box lined with these radiation to electricity converters with a small amount of radioactive material in the center, and have an energy generating device that would last for thousands or even millions of years? Imagine putting the sun in a box lined with solar cells, but on a much smaller scale.

Is there a reason this wouldn’t work?

  • @RangerAndTheCat
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    11 year ago

    Can you ELI5 why the efficiency is so low on the RTGs?

    • @[email protected]
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      fedilink
      91 year ago

      RTGs aren’t radioactive-specific, they are just a solid state way of turning a temperature difference into electricity. The better way to do this (at scale) is e.g. a steam engine, which is what big power plants do.

    • @nukeworker10
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      31 year ago

      They take the waste heat from nuclear decay and convert it to electricity through the use of a peltier device. Those work off of differential temperature and are pretty inefficient to begin with. Unmderated Nuclear decay doesn’t produce a lot of heat at one time, which is why reactors use a moderator to increase the power output.