REHAU Ltd. -

Generate Energy Efficiently

Renewable Energies - cost effective and climate friendly technology of the future

With our solutions for energy efficient construction, you can secure yourself a decisive advantage in competence and benefit from the synergies of a forward-looking system supplier. At REHAU, all of the three pillars of energy efficiency are standard: efficient energy production, efficient energy usage, reducing energy losses. Our innovative materials and system technologies offer you highly efficient options for a positive energy evaluation or to surpass the requirements of BREEAM or Code for Sustainable Homes (C4SH). As such, you can achieve holistic planning, construction and modernisation – whether you use ground-source heat or solar energy, and whether you want to improve heating efficiency or thermal insulation.

Above all, the significance of using renewable energies such as ground-source heat and solar energy is experiencing a huge increase. REHAU provides comprehensive systems for custom-made solutions – ideally in combination with systems for heating and cooling:

RAUGEO ground-source systems: ground-source heating and cooling
AWADUKT Thermo ground-air heat exchanger: controlled, ground-source building ventilation

RAUGEO Helix Probe

RAUGEO ground-source systems:
Ground-source heating and cooling

To reach the highest BREEAM standards and the highest code levels in C4SH, ground-source energy is becoming increasingly important. Irrespective of weather and climate, it is always available and therefore constitutes the most independent form of renewable energy.

Energy stored in the ground is available in the UK from a depth of as little as 1.5 m. From a depth of only 10 m, a largely constant temperature of approx. 10°C prevails all year round, increasing by approx. 3° C for every 100 m depth. Users of ground-source heat can cost-effectively obtain up to 75 percent of their heating requirements from the ground.

The service portfolio of ground-source specialist REHAU ranges from the use of collectors for acquisition from the surface through deep acquisition using probes to the use of antimicrobial ground-air heat exchangers for the controlled ventilation of living areas.

Ground-source heat is exploited by means of various laying procedures:

RAUGEO collect PE-Xa ground-source collector
Horizontally laid ground-source collectors at a depth of approx. 1.5 m

RAUGEO PE-Xa helix probe
Telescopic spiral probes (helix probes) introduced at drilling depths of only 3 to 5 m

RAUGEO PE-Xa probe
Ground-source probes introduced vertically into the ground at a typical depth of 70 to 150 m – with no welded joints in the earth, for the greatest possible operating safety

RAUGEO energy piles
Collector pipes integrated into the foundation piles

Ground-source heat can be used in the broadest range of applications: from the heating and cooling of residential houses, industrial, commercial and administration buildings to keeping car parks, bridges and railway tracks clear of snow and ice. The possibilities for the use of ground-source energy are almost unlimited.

The advantages at a glance:

Up to 75 % energy yield from the ground
All probes are ideally suited to combination with low temperature heating such as underfloor
One solution for two applications: heating and cooling
Permanently low operating costs
Latest solution – telescopic spiral probes (helix probe): installation area with a depth of just 3 to 5 metres, with a small plot area, where deep drilling is not possible

Ground-air heat exchanger system:
Mechanical ventilation via ground-source energy

Ground-air heat exchangers are installed upstream from mechanical ventilation with heat recovery. The principle uses the almost constant soil temperature of approx. 10 °C at 1.5m deep for pre-heating in the winter and for pre-cooling of the fresh air in the summer by means of a pipeline system laid in the ground.

The REHAU AWADUKT Thermo ground-air heat exchanger is the only one that has an antimicrobial inner layer: the inner layer mixed with silver particles reduces microbial growth. So, from now on, not only is it possible to save costs and energy, the air quality in the building can also be improved considerably.

Mechanical ventilation is becoming increasingly common in the health and education sectors as well as in the new-build domestic projects.

The advantages at a glance:

Energy efficient and reliable with a highly heat conductive polypropylene fully walled pipe system
Comfortable and convenient for cosy heat in the winter and pleasant cooling in the summer
Hygienic and antimicrobial with special air filters and an antimicrobial inner layer

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