Heat sources

TERRA brine area	TERRA brine depth	TERRA air	TERRA groundwater
Benefits Use of the energy from the sun and rain stored in the upper soil layers	Benefits The plot area is retained, constant supply temperature in low-lying soil layers	Benefits No earthworks or drilling required, no planning permissions needed	Benefits Groundwater has a consistent temperature level and is an ideal energy source
Preconditions Approx. 200 m2 clear plot area (corresponds to the average energy requirements of a single family home)	Preconditions For deep bore holes, an area of 3x5 m is required for drilling crane vehicle	Preconditions Additional installation area in the outside area of approx. 1-2 m2 for the evaporator, recommended as a bivalent system	Preconditions Groundwater with sufficient flow volume, a well system with two wells for inflow and outflow

Heat source 1:

Deep drilling

Ground energy with deep drilling:

A ground heat probe made from plastic pipes takes up free heat energywhen the brine passes through. This energy is used in the heat pump circuit to evaporate the refrigerant.

Beyond a depth of 20m, the earth has a constant temperature of +10°C – excluding seasonal fluctuations. This constant temperature provides a warm brine temperature in the winter, and is ideal in the summer for cooling.

Heat source 2:

Groundwater

Saving costs from the ground up:

Groundwater saves even more electricity than other natural heat sources. This is because water enters the heat pump at higher temperatures than the brine from a deep borehole. The groundwater is obtained from the conveyor reservoir, passed through the evaporator and returned to the groundwater flow in the absorption reservoir. Like deep drilling, groundwater is also ideal for passive cooling.

Heat source 3:

Flat collector

Energy from the sun and rain using brine flat collectors:

Several hundred metres of plastic piping are laid 1.2 - 1.5 m underneath the ground. The free ground heat is utilised by circulating an antifreeze solution.

Heat source 4:

Direct evaporation

The flat collector with direct evaporation is especially economical. The refrigerant circulates directly through horizontal, plastic-coated copper pipes laid in the ground at a depth of 1.2 - 1.5 metres. The "evaporator“ for the heat pump is therefore located in your own garden. The heat transfer from the brine circuit to the refrigerant is not required.

What a fantastic energy source!
Whether sun, earth, water or air, the comfortable room temperature is generated via heating or air conditioning…

Natural air conditioning
The heat pump is an air conditioning machine in the summer - directly or indirectly.

Further information

TERRA SW