One of the most important factors for greenhouse operators are the energy costs.

The hereby incurred costs are about 300 to 500 kWh per m² for the heating and approximately 5 to 20 kWh per m² for electric lighting.
The energy costs in northern Europe amounts about 50% of the total production costs.

For the heating of greenhouses in North Africa and southern Europe often simple fan heaters are used, witch mainly heat up the upper part of the greenhouse.
Here, the upper regions of the greenhouse are been heated so extremely, that the waste heat blows-off to the outside unused.
Even in Central Europe these very ineffective, very inefficient and very environmentally unfriendly heating systems are stil been used.

A better solution is to bring the heat where it is been needed. To the roots – With a Root-heating-system.

The excess heat of the root-heating-systems also warms up the rest of the plant.
A root-heating-system can save till 30% energy.

Known root heating systems usually consist of PE pipes.
We provide rubber mats with 6 or 8 tubes.
Because of their bigger surface these mats are more efficient than single tubes.
Therefore they can be used with lower operating temperatures and the temperature distributions in the root area are more advantageous.

The heat mats (sold by the meter) can easily be crimpt with any rigid and drilled tube to an insolvable connection (self-assembly). Thus, a high-quality and powerful root heating system can easily be installed in every greenhouse of any shape and of any size.

As you only need relatively low heating temperatures for the operation of a root-heating system, the most part of the needed heat energy can be generated from the inexpensive sunabsorbers.
The 10 cm wide absorber mats can be installed in the greenhouse very easily in a nice and stylish design. They can be placed in the hollow section of double plates or under the greenhouse foils.

Certainly the light output of the greenhouse will be affected by the attached absorbers.
But since the energy consumption of artificial light is 20-40 times lower than the needed heating energy, the solarabsorbers should get the priority.

In North Africa and southern Europe the night temperatures are in winter often lower than 4°C. The greenhouses must be heated there for 2-3 months a year during the nights. However it is advantageous that in these areas, the daytime temperatures in winter are often up to 27 ° C. Herewith there are ideal conditions for the use of the traditional solarabsorbers.
Finally, even in greenhouses you can use the solarabsorbers for heating very economically.

Since the roots of the plants, depending on the plant variety, need relatively low temperatures to flourish, the absorber technique can be used even in middle European countries very economical.



(letzte Änderung vom 29.01.09) p