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HEat SInkS for coolIng opEratIon
Cooling with a geothermal probe
Passive cooling with geothermal
probes utilises the constant
temperature of the ground at greater
depths. in standard houses, the
cooling capacity is adequate for the
few days of the year, when cooling is
desirable. with high cooling loads,
the temperature underground can rise
gradually. this would result in a slight
reduction of the cooling effect via
the underfloor heating system or fan
convectors.
note: the geothermal probe can be
larger if greater cooling loads are
required. the probe for the cooling
operation should not be longer than
100 metres.
Cooling with groundwater
the groundwater temperature never
rises above +14 °C, even in summer.
that makes it an ideal choice for
passive cooling. the low temperature
is transferred to the heating water via
a heat exchanger, thereby utilising
the underfloor heating system or
fan convectors to cool the building.
with this kind of operation, the
temperature of the groundwater
returned underground must not
exceed 20 °C. A water analysis should
verify that the water is compatible
with the heat exchanger material.
Cooling with geothermal collectors
Geothermal collectors are only
suitable for passive cooling to a
limited extent. the temperature
near the surface of the ground is
substantially dependent on the
outside temperature. with an
additional heat transfer over time, the
temperature would rise higher than
+15 °C, making cooling impossible.
Main layout geothermal probe heat pump system
Main layout groundwater heat pump system
Main layout geothermal collector heat pump system
Summary of Contents for Heat pumps
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