The Core

Why We Are Here => Water Cooler => Topic started by: rcjordan on February 17, 2022, 01:45:41 PM

Title: DE: Geothermal energy is indispensable for transforming the heating sector
Post by: rcjordan on February 17, 2022, 01:45:41 PM

https://techxplore.com/news/2022-02-geothermal-energy-indispensable-sector.html

Link from Debbie's memory banks;
Green good intentions cause chaos in two German towns | 12.07.2009
https://www.dw.com/en/green-good-intentions-cause-chaos-in-two-german-towns/a-4473382

Title: Re: DE: Geothermal energy is indispensable for transforming the heating sector
Post by: buckworks on February 17, 2022, 02:44:44 PM
>> chaos

An old saying comes to mind, "Be careful what you wish for ..."
Title: Re: DE: Geothermal energy is indispensable for transforming the heating sector
Post by: rcjordan on February 17, 2022, 03:33:12 PM
IIRC, we also have determined that fracking has helped initiate earthquakes.

In short, we cannot just blithely assume that every geothermal extraction will be benign.

Debbie keeps screaming that we need to be pursuing "closed loop" geothermal.  And, while 700c is the awesome, scary stuff of "Journey To The Center Of The Earth', she reminds me that my heat pump does perfectly fine on 58f ground water.
Title: Re: DE: Geothermal energy is indispensable for transforming the heating sector
Post by: ergophobe on February 17, 2022, 05:57:58 PM
I think closing the loop at great depths is very difficult.

And as mentioned in the Science Fact of the Day a couple days ago, per unit there is five times more energy in 400C water than in 200C water. So maybe 10X or more in 700C water. So if you're talking about how much water you need to extract and, in an EGS system how much you need to pump back in, you're looking at a big difference.

So I fall back to my favorite design/tech quip: for every solution, there's  problem.
Title: Re: DE: Geothermal energy is indispensable for transforming the heating sector
Post by: rcjordan on September 30, 2022, 01:54:23 PM
update:

This historic German town is falling apart in 'slow-motion catastrophe'
https://www.thelocal.de/20170818/this-historic-german-town-is-falling-apart-in-slow-motion-catastrophe/
Title: Re: DE: Geothermal energy is indispensable for transforming the heating sector
Post by: ergophobe on May 29, 2023, 09:36:27 PM
Japan's hot-spring resorts are blocking geothermal energy plants
A centuries-old leisure industry is a powerful, but not insurmountable, obstacle to progress
https://www.economist.com/asia/2023/05/28/japans-hot-spring-resorts-are-blocking-geothermal-energy-plants

There's always an interest group....