Ground Source Drilling - Geothermal Heating Solutions
The
average ground temperature just below the surface, in the UK is
between 8ºC and 13ºC, this temperature remains constant
throughout the year.
‘Ground Source Drilling’ drill vertically
down below the earth’s surface, inserting a 32mm
or 42mm pipe, whereby water is then circulated through
the pipes. The water in the pipes is lower than the
surrounding ground and so it warms up slightly. This
low-grade heat is transferred to a heatpump, where it
is used to heat up a refrigerant. By compressing this
'warmed' refrigerant further heat is generated and this
means that water output from the heat pump is typically
45ºC - 50ºC. for space heating and up to 55ºC
for domestic hot water.
Your domestic fridge uses the same technology. As you put food and drink
in to your fridge the low-grade heat it carries (after all it's
usually warmer than the inside of the fridge) is transferred to
the refrigerant in the unit. The refrigerant is then compressed
to raise the temperature; this high-grade heat is then expelled
from the back of the fridge. This is why the inside of the fridge
remains cold whilst the back of the fridge gets hot. |
