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Ground Source Heating
Ground source heat pumps work by using heat stored in the ground from the sun's solar radiation to supply all of the energy required for a home's heating and hot water system.
The top 15 metres of the Earth's surface maintains a relatively constant temperature of approximately 12 degrees Centigrade. This energy can be used to heat buildings indirectly. Pipe is buried in the ground, either in a borehole or a horizontal trench. Very cold fluid is pumped through the ground loops where its temperature is increased by the surrounding warm ground. The heat pump unit extracts this energy from the fluid and uses it to heat domestic water and a low temperature heating systems such as underfloor heating. |
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With a traditional gas boiler, for each unit of energy input the output is around 0.8 units. With Ground Source Heating each unit of electrical energy input results in 4 units of energy output. As demand increases and capital costs reduce this form of heat source will become the norm for larger bespoke homes.
Oakbridge have installed ground source heating with both bore holes and horizontal trenches depending upon the area and topography of the site. Oakbridge continue to seek out new technologies to provide the most innovative homes in Hertfordshire. For more details please speak to our Building Services Co-ordinator - Stephen Merchant.
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