Describes how Dutch regulations for ventilation in buildings have been updated to include information about the siting of air inlets in relation to contaminant exhaust locations. This is covered by the Dutch Code of Practice NPR 1088 and the regulation NEN 1087, "Ventilation of Buildings: Determination Methods for New Buildings".

Performance checks on ventilation systems carried out by the Swedish Board of Housing Building and Planning showed that approved systems (37%) are divided into blocks of flats (25%), office buildings (43%), schools (37%), day care centres (51%) and health

Attempts to assess the performance of heat pipe heat recovery units for naturally ventilated buildings. The effectiveness of four heat pipe units was measured in a two zone chamber. The pressure loss characteristics of the units were determined by computa