Two days ago I put this in the wrong place and I am now re-posting this idea for those who may know more about this topic.
I have been wondering for years that in many places there are thermal waters readily available from the ground.
It may be as hot as 70+degrees Celsius yet, apart from being wasted after its has been used, no one cares to pump it back into ground, right where it came from, to let it naturally reheat and use again.
Initially, these wells have enough pressure to push the water to surface by themselves.
The town I used to grow up in had this opportunity to exploit this thermal water for decades until the well gradually gave in (first loosing its pressure then they used pumps for another 20yrs b4 it all stopped).
It was such a waste because the disposed water was still hot enough to kill the weeds around as it ran into the artificial river, not very smart I thought at the time and even since.
Those of you who know enough about these things, do you think it could have been a feasible idea to pump this still warm/hot water back into ground for reheat and replenish some of the minerals in it?
Theoretically, it just would have required a pumping energy to put it back down to repeat the process.
I know nothing about this but, as an idea, I was always wondering if it would have been possible?
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