The Präklima element was developed on the basis of a modular, self-sufficient and energy-generating double-skin element facade and tested under real conditions over a period of approximately one year. Monitoring confirmed the functionality and learning ability of the self-learning algorithm of the control system.

The main components of the Präklima element are a window element with adjustable window opening and shading as well as a technical element with integrated photovoltaic hybrid air collector with mechanical ventilation and heat recovery and an electricity storage unit. All the technical components for conditioning the space were integrated into the facade element. The user-dependent individual change of the room climate is given.

Technical parameters:
  • Supporting structure aluminium
  • SOMMER SOKALTHERM® G78 series
  • Aluminium profiles with very high recycling content, e.g. also possible from HYDRO CIRCAL 75 R
  • Face widths or profile geometry in custom made design
  • Uf values 1.1 to 1.4 W/m²K
  • Air permeability according to DIN EN 12152/12153 class AE,
    DIN EN 12207/1026 class 4
  • Water tightness according to DIN EN 12154/12155 class RE900,
    DIN EN 12208/1027 9A
  • Resistance to wind
    (nominal load) according to DIN EN 12179/13116 +2,000 Pa/-2,200 Pa
    DIN EN 12210/12211 Class C5
    (safety load) according to DIN EN 12179/13116 +3,000 Pa/-3,300 Pa
    DIN EN 12210/12211 +-3,000 PA
  • Impact resistance according to DIN EN 14019/12600 class I5/E5
    DIN EN 13049/12600 Class 3
  • Further possible security variants or combinations are possible
    • Burglar resistance according to DIN EN 1627
    • Break-out resistance according to DIN EN 1627
    • Bullet resistance depending on agreement and object requirements
      (basic system tested up to FB7)
    • Blast resistance depending on object requirements and coordination
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