Your browser is no longer supported

For the best possible experience using our website we recommend you upgrade to a newer version or another browser.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

Luke warm response

Letters

Your recent item on geothermal heating (NCE 15/29 December) set me thinking. If the facts I have gleaned from elsewhere are correct, temperature within the earth's crust increases with depth at a rate of 2°C-3°C every 10m although there are areas where the increase is greater.

Drilling down 30m would therefore only be likely to produce heat at a degree or so over the ground surface temperature. Even taking the latter as the 15° world average the resulting hot water would scarcely be warm enough for a bath!

An article in NCE setting out the opportunities for geothermal heating in the UK - giving the appropriate figures and perhaps, maps - would be very welcome.

Robert Holland (F), dduuttcchh44@hotmail. com

Have your say

You must sign in to make a comment

Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions. Please note comments made online may also be published in the print edition of New Civil Engineer. Links may be included in your comments but HTML is not permitted.