Ground Source Heat Pumps
A heat pump takes the heat from water in pipes that are in contact with the ground, which can then be circulated through a heating system.
The average below ground temperature is between 8°C and 13°C.
Although this process cools the fluid, it can be re-circulated back through the ground where it will absorb more heat before being passed through the heat pump again.
Heat pumps do not generate electricity; they can however provide heating and can be operated in reverse to provide cooling. They do require electricity to operate, but ground source heat pumps are very energy efficient, producing up to five times the amount of heat energy for every unit of electrical energy needed to power it – this electricity can in turn be provided by renewable means.
For heat pumps you will need a different cylinder to those traditionally used in the home as these need to become more of a heat store, therefore making them bigger in size.