Low-tech building air conditioning with the power of nature

Multifunctional natural climate ceilings for energy-efficient and room-healthy cooling and heating as well as for reliable moisture management in buildings. Ideally suited for new private and commercial buildings as well as for retrofitting in existing properties.

At the heart of the climate ceilings are patented HUMID clay modules with a proportion of over 50 % proportion polar (high-sorption) clay minerals. The basis for reliable moisture management in buildings.

The HUMID-modules consist mainly of polar (high-sorption) clay minerals. Due to the high clay content and the very high compaction, the modules achieve enormous sorption values. This applies to the absolute mass of moisture on the one hand and the speed of absorption and release on the other. The modules can process over one litre of moisture per m². Moisture utilisation only takes place in the area of free saturation – swelling, shrinkage and therefore cracking are excluded. The water absorption coefficient (A-value) is 1.6 kg/m²√h, which is 17 times faster than aerated concrete, for example. They also absorb pollutants and odours to a high degree.

In buildings with lower internal moisture loads (e.g. offices, hotels, hospitals, care facilities, flats), conventional surface cooling systems generally require a ventilation system with a high air exchange rate to protect against excess moisture in the cooled room. The natural climate ceilings can easily absorb these humidity levels. This means that the CO2 content becomes the sole control or design variable, which significantly reduces the required air volumes. CO2 regulation via passive differential pressure fans is sufficient. There is close co-operation with SIEGENIA in this segment. The total investment is reduced by around 30% and the operating and maintenance costs are almost completely eliminated.

In buildings with increased internal moisture loads (e.g. conference rooms, schools, day-care centres), conventional surface cooling systems require a ventilation system with additional pre-drying of the fresh air supply. By using natural climate ceilings, the CO2 content remains the sole control or design parameter here as well. CO2 regulation via decentralised ventilation systems is sufficient. There is close co-operation with SIEGENIA in this segment. The total investment is reduced by around 20% and the operating and maintenance costs by around 75%.

The cooling system can be operated with a flow temperature of up to 6 °C below the dew point without any problems. This guarantees uniquely high cooling capacities and uninterrupted cooling phases.

Humidity simulations can be carried out with the aid of specially developed software.

The system is installed up to the surface coating in drywall construction. First, the mounting level (consisting of 22 mm OSB or ESB chipboard or 18 mm cement-bonded fibreboard with tongue and groove) is mounted either directly to the ceiling or to a suitable suspension system. The HUMID modules are installed at the mounting level on cross joints in accordance with the installation plan. Openings or recesses for building services such as lighting, sprinklers, ventilation or inspection flaps can be individually cut out as required, as  the cooling/heating pipe inserted into the groove structure, free of any couplings. Finally, the surface is coated with the specially developed HUMID universal plaster and clay paint or with natural lime plaster and lime paint.

Acoustic systems are easy to integrate or combine, the necessary interfaces are available.