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Actually, this piece is absurd:

Roman Bath-style heating could turbocharge levelling up
Deep geothermal technology to keep homes warm might create 35,000 plant maintenance jobs by 2050

Creating jobs is a cost, not a benefit. And there’s nothing new about this at all – geothermal energy is used in many places right now. Finally:

The technique artificially replicates the effect of naturally occurring hot springs, such as those used in Roman Baths, by drilling into aquifers to access heat deep underground.

Err, that’s the Roman Baths at Bath – all the other Roman Baths used wood fires, slaves and a hypocaust.

Emma Gatten,

Seriously Emma, really….

13 thoughts on “Oh aye?”

  1. No engineering or physics there, nor in the govt it seems from the article.

    A neighbour of mine from years ago ran a company making big fuck-off valves & stuff and he won a contract to supply a geothermal power station in NZ. He said after a few months in operation the borehole pipes and the valves were pretty much clagged up with mineral deposits.

    It’s not ‘free energy’ by any means. I expect most of those 35000 jobs will be clearing mineral shit from the pipework every week or so.

  2. Funny thing is, to provide adequate heat extraction, the borehole must be hydraulically fractured.
    But don’t tell the ecofreaks.

    Oh, and the seismic restrictions on fracking-fpr-gethermal are much less restrictive than fracking-for-gas, so may I suggest the gas companies drill some ‘geothermal’ bores and frack them – and accidentally find gas?

  3. “all the other Roman Baths used wood fires”: are you sure? Yer Ancient Britons were using coal when the Romans pitched up and continued to use coal during the occupation.

  4. @Tim the Coder

    Conventionally that was the way. If this firm’s solution works it could be very different
    By drilling through the deep rock with microwaves instead of a conventional drill bit they go very very deep and create a vitrified rock lined bore hole. At the depth they intend to go to the rock is at 600C so they don’t hydraulicly fracture the rock or tap into aquifers. They just need to pump their working fluid (water of perhaps some gas) down the finished hole then the thermal transfer into that very long pipe from the surrounding hot rock does the rest.

    It’s “probably” not going to work, but if it does it means you could put a “green” geothermal plan almost anywhere.

  5. Bit weak on physics no, AndyF? A round bore-hole gives minimum surface area to transfer heat across. Try & extract heat in significant quantities from that & you’d soon have the rock surrounding your borehole at the same temperature as the working fluid. Most rock isn’t particularly thermally conductive. See fireplaces.

  6. By drilling through the deep rock with microwaves instead of a conventional drill bit

    Just Stop Microwaving vandalising show gardens in 3… 2… 1…

  7. Plenty of geothermal heat in Iceland. Indeed I remember reading that those unfortunate enough not to be close enough to a geothermal heat source can claim a subsidy on the cost of their oil heating.

    So even there it doesn’t work everywhere.

  8. @Tractor Gent
    That is definitely the problem when bringing up hot corrosive fluids. Although the local geothermal plant scale has enough gold in it to make reprocessing worthwhile. Unfortunately the water has enough radium in it that it was sold as a health drink 100 years ago.

  9. The NZ geothermal stations heat exchange the water coming up, then pump it straight back down.

    That removes the need for dealing with major processing issues and stops the bore becoming depleted.

  10. Telegraph Funding:

    Environment and Health is heavily funded by Gates, articles should be labelled as Advertorials

    Sarah Knapton is most bought

    She was on Speccie/Tele podcast few weeks ago and what she said contradicted all she writes

    Telegraph is fully signed up to current narrative, any perceived opposition is theatre. Fraser Nelson is their top ambiguous journo

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