DIRECT EVAPORATION

Geothermal heat with direct evaporation
Flat collectors with direct evaporation are particularly efficient. Refrigerant circulates directly through horizontally routed copper pipes with plastic sleeves, approximately 1.2-1.5m below the surface (30 cm below the frost line). As a result, the “evaporator” of the heat pump is in your own garden. The system is very similar to the brine flat collector. However, because there is no heat transfer from the brine circuit to the refrigerant, this system is even more efficient than brine flat collectors. Consequently, its operation consumes less electricity and the collector requires less space.
One special feature regarding direct evaporation flat connectors for heat pumps is that the collector must be routed completely level.

TERRA SW flat collectors
ADDITIONAL HEAT SOURCES

DIRECT EVAPORATION

Direct evaporation is the most efficient geothermal heat application for confined areas.

DEEP DRILLING

Heat pumps with deep drilling are the safest variant: they require a minimum of space, have a long service life and are suitable for heating and air conditioning.

FLAT COLLECTORS

Flat collectors are cheap to install but require a large surface below the garden.

GROUNDWATER

Groundwater technology is highly efficient and requires little space: the energy is drawn from the earth using two wells.