| Heat from your garden |
 |
 |
The earth stores an enormous amount of solar energy from both solar radiation and rainfall. To extract this energy, ground collectors consisting of flexible poly ethylene pipes are buried in the earth vertically. A mixture of water and anti-freeze is then circulated through the pipe loops, attracting the heat energy and transferring it to the heat pump.
If land space is limited the ground collectors can be installed vertically in a borehole, drilled up to 100m deep in the ground.
Multiple boreholes are commonly used in large installations where very high levels of heat extraction are required. |