Gravity cooling

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The gravity cooling is in the architecture and in the construction industry employed Cooling Principle of rooms. It is a silent convection cooling .

Warm air is cooled by cooling units in the upper area of ​​the room. Since it is now cooler and therefore heavier, it moves down through a chute. The outlet openings through which the cooled air is fed back into the room are located as deep as possible, usually at floor level. The heat from the cooling units is dissipated through a water pipe network or another heat transfer medium. The way it works is similar to that of a central heating system , except that the heat is not supplied but removed.

The gravity cooling avoids widespread ventilation ducts which, in addition to consuming a lot of space, also have hygienic disadvantages. The cooling intensity can be individually adjusted locally without having to forego the advantages of a central ventilation system.

This air-conditioning principle is often used in office buildings, especially in renovations when tight spaces exclude ventilation ducts. It can be integrated in cupboard walls or behind cladding.


  • TROCKENBAU-AKUSTIK, issue 4/2007, pages 24-25, 'By your own weight'
  • sbz sanitary, heating, air conditioning and plumbing technology, edition 8/2002, pages 54–56, Schmid Wolfgang: 'The wall unit as a room cooler. Inexpensive convection cooling for offices ''