Ventilation, air flows in buildings and indoor air quality - R D & D and developments in Germany.

Ventilation, infiltration, indoor air flows and air exchanges determine two aspects of fast growing interest: the energy balance of buildings and the indoor environment. Whilst in the wages of the energy crisis RD (research and development) & D (demonstration) in the different areas had been focused on rational energy use now with view on the public awareness of the environmental situation (outdoors and indoors) also the aspect of indoor air quali ty stimulates widespread RD&D activities. The developments in the near future will be influenced by the demand to bring energy conservation into line with acceptable indoor air quality. This is expressed in several main RD&D programmes supported by Federal Ministries as well as in other institutional or industrial activities. The areas of ventilation, infiltration, indoor air flows and air exchanges cover a wide range of technical subjects, first of all heating and air conditioning. An overview over the complex structure and organization of RD and D in the Federal Republic of Germany is given in a report by L. Trepte and A. Le Marie [1]. This paper presented at the 10. AIVC Conference as poster will summarize some new developments and thus complement the report.