Chilled water wall for cooling and dehumidification of indoor spaces

Innovative product development

An innovative type of air conditioning system was developed at the Fraunhofer Institute for Building Physics IBP. The chilled water wall is a device, which cools and dehumidifies office rooms, conference rooms or hotel lobbies in a remarkably pleasant way. In a thin film, chilled water is flowing down a vertical wall. The water film has a temperature well below the dew point temperature of the room air. This results not only in effective and draft-free radiation cooling. At the same time, the device reduces indoor humidity, since air moisture condensates on the water surface and runs off, thus avoiding the risk of mold growth.