Marvin Posted August 5, 2021 Share Posted August 5, 2021 Slinky trench typical example 10m long produces about 1kw so 4kw equals 40m trench. However spacing between trenches 5m apart. So 200 square meters for 4kW Single pipe down a trench about 15w per meter. Trenches about 1.2 meters apart. So 4 kW about 400 meters square? All as rough numbers depending on lots of factors but you get the gist. Link to comment Share on other sites More sharing options...
Russell griffiths Posted August 5, 2021 Share Posted August 5, 2021 Bore hole, takes up 150mm square. Link to comment Share on other sites More sharing options...
Marvin Posted August 5, 2021 Author Share Posted August 5, 2021 5 minutes ago, Russell griffiths said: Bore hole, takes up 150mm square. Yup. Assume your talking about a closed loop system. And costing about 30k Link to comment Share on other sites More sharing options...
Russell griffiths Posted August 5, 2021 Share Posted August 5, 2021 No idea, it was just suggested to me to have a bore hole instead of 800m of pipe. Link to comment Share on other sites More sharing options...
Nickfromwales Posted August 5, 2021 Share Posted August 5, 2021 39 minutes ago, Marvin said: Yup. Assume your talking about a closed loop system. And costing about 30k Who priced you at that amount? Link to comment Share on other sites More sharing options...
Marvin Posted August 5, 2021 Author Share Posted August 5, 2021 6 minutes ago, Nickfromwales said: Who priced you at that amount? No one. However... https://www.imsheatpumps.co.uk/ Link to comment Share on other sites More sharing options...
Marvin Posted August 5, 2021 Author Share Posted August 5, 2021 https://www.imsheatpumps.co.uk/ On their Web site ( you have to search ? Answer: A 6-8 kW horizontal ground source heat pump system usually costs around £10,000 to £12,500 to install. A larger 12kW horizontal ground source heat pump system would cost around £15,500 to £17,500 to install. Vertical ground source heat pumps are more expensive due to the drilling of boreholes, so the equivalent 12kW system would cost around £30,000 to install. Hope this helps. Link to comment Share on other sites More sharing options...
Temp Posted August 5, 2021 Share Posted August 5, 2021 3 hours ago, Marvin said: Slinky trench typical example 10m long produces about 1kw so 4kw equals 40m trench. However spacing between trenches 5m apart. So 200 square meters for 4kW Single pipe down a trench about 15w per meter. Trenches about 1.2 meters apart. So 4 kW about 400 meters square? All as rough numbers depending on lots of factors but you get the gist. My inclination would be to go with the larger collector to give the thing access to as much heat as possible. Link to comment Share on other sites More sharing options...
tonyshouse Posted August 6, 2021 Share Posted August 6, 2021 Agree, don’t use slinkies, trench 2m deep and well apart, 5m if pos, and oversize collection field Link to comment Share on other sites More sharing options...
jfb Posted August 6, 2021 Share Posted August 6, 2021 Can't you use a wide enough bucket so that you get a straight pipe down each side of the trench? Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now