Nature has a very simple solution to this problem. The solar energy supplied during the day is stored in great quantities in the air, water and sub-soil of our planet. Heat pumps utilize this environmental energy in the form of heat, by recovering this energy stored by nature, making it available for central heating in the home or for domestic water.
In summer, the heat pump can be utilized for cooling the house by reversing the operating cycle.

Contrary to other renewable energies, the heat in the air, water and sub-soil is at our disposal 24 hours a day for 365 days per year and can be self-generating, using solar energy and the natural heat of the sub-soil.

Through continuing research and development of the systems, the HAUTEC heat pumps have reached a technological position by which they can supply, free of charge, up to 80% of the energy necessary for heating houses and domestic water, using renewable environmental energies. This way, only 20% of electricity is necessary for the functioning of the heat pump. Other additional heating systems are not necessary.

The latest technology in heat pumps succeeds in transforming free environmental energy which exists in the air, water and in the sub-soil of the earth – in the form of heat – and uses it for heating water.

The heat pump retrieves heat from the environment, increases the temperature level and makes it available in the form of hot water for a heating system. The company HAUTEC has optimised this technology over the last few years.

Depending on the natural energy source, it is possible to gain from 1kW of electric energy up to 5kW of thermal energy (heat). This allows us to achieve a return factor of up to 1:5.

Thus, the conditions are created so that the gas gains exceptional capacities to absorb and release thermic energy. This continuous process is used to transfer ambiental heat into a heating system. The heat pump is so efficient because the electrical energy needed for the system to function is 3 to 5 times less than the thermal energy transferred.

COMFORT AND SAFETY

GROUND COLLECTOR SYSTEM
In the garden, a collector system is laid horizontally at a depth of 1 to 1.5m. The collector, made up of polyethylene tubes, absorbs the natural heat of the earth via an anti-freeze solution which circulates through the tubes, transporting it to the heat pump. The heat pump transforms (by permutation) this free energy from the environment into water heating energy.

PROBE SYSTEM
The earth is drilled to a depth of between 30 and 100m and a probe of polyethylene tubing is placed vertically, using the same collection principal Sand as the horizontal collector. The solution circulates to the full depth of the tube, where it absorbs the heat and transports it to the heat pump.

The energy fence is made up of a network of polyethylene tubes, generally installed in the form of a garden fence around the property. This works absolutely silently and can easily be integrated into the existing land-scaping.

As in the other collector systems, an aqua-glycol solution circulates through the tubes, absorbing the heat from the air and additionally using – like a solar panel – the sun’s radiation as solar energy. The heat pump transfers the energy absorbed by the fence for house heating.

The air as an energy source is one of the most economical solutions. This system, although being a smaller investment than other systems, only functions efficiently when external temperatures are above 5 ºC.

The air is forced through evaporators (radiators) via a fan, which removes the natural heat.

FOR POOL HEATING
The HAUTEC air-to-water heat pump offers another efficient and economic way of heating a swimming pool. With this solution, there is no need to stop enjoying the use of the swimming pool on colder or cloudy days.

The air-water heat pump uses the energy accumulated in the external air to heat the water in the pool. This way, the outside air supplies up to 80% of the energy necessary and on 20% of electricity is used for the functioning of the heat pump.

The heat pump is connected to under-floor heating return cycle which due to the high temperature of the energy source is able to raise the temperature of the domestic water to 55-65 ºC, using very little energy. In the summer, the under-floor heating is used as a collector (storage) to heat the domestic water.

RECUPERATION OF HEAT IN HOUSES WITH FORCED VENTILATION
Modern houses are more often constructed with high levels of insulation. These houses present a block with a highly sealed structure which in its turn results in very low heat loss. However, these modern constructions have to be equipped with a specific ventilation system to exchange the hot and used air inside the house with fresh air.
An air-water heat pump specifically developed for this operation offers the ideal solution to use the forced ventilation system as a source of energy without abdicating the ventilation.

The hot and used air in the rooms is transported through a ventilation system to the heat pump. The energy contained in the air, in the form of heat, is recuperated by the heat pump to heat the house and domestic water.

ACTIVE COOLING OF THE HOUSE WITH HEAT PUMPS
Any one of the systems (energy sources) presented can be reversed in its function to actively cool a house.

The operation of a heat pump is similar to that of a refrigerator. While using the technology for heating, the operation can be inverted with the help of a specific technique for active cooling of the house without additional costs. However, this reversal process functions only in houses equipped with under-floor heating.