English

The report discusses the need for a proven method of measuring air infiltration rates in large enclosures in order to assess the need for and effectiveness of energy saving measures. The object of the research is to develop such a proven method. Some

This paper mentions the problems encountered in highly insulated flats and houses as a result of inadequate ventilation. Based on this the advantages of a system for ventilation with heat recovery are presented. In the second part of the paper such a ventilation system is presented combined with an air heating system.