Sunday, 24 June 2012
Friday, 22 June 2012
Monday, 18 June 2012
Here are the Baines team digging the trenches
for the Ground Source Heating pipes. They are
burying the pipe under sand as the ground
was incredibly rocky and may have
eventually damaged the pipework. There will
be four trenches one metre deep housing
600 metres of pipe in all.
Monday, 11 June 2012
Ground Source Heat Pumps
Ground Source Heat Pumps – How They WorkA series of loops made of copper pipe are buried in a trench (usually in the garden of the property, or the surrounding grounds) or in a deep ‘borehole’. These coils transfer the heat that naturally occurs in the ground to be used in the heating of the building or its water supply.
Ground Source Heat Pump pipes are filled with a mixture of water and antifreeze fluid and this is pumped around the loops absorbing heat as it travels through the ground. The amount of available space and the normal ground conditions will determine how long the underground pipes are and the type of digging that is required.
The process is similar to that used by domestic fridges, where heat is extracted from inside into a solution called frigerant (stored at the back of the unit) to keep food cool. A Ground Source Heat Pump has an evaporator to take in heat from the looped pipes and a compressor to regulate the temperature. A condenser extracts the heat for use in underfloor heating, radiators or hot water.
Ground Source Heat Pumps are most suitable for homes and properties with underfloor heating, because this type of room heating works at a lower temperature than radiators.