Good indoor air quality in buildings becomes such a major concern that new design recommendations emerge in many countries (USA, Nordic Countries,...). Improvement of the interior environment should not beat the expense of higher energy consumption. Heat recovery systems are one appropriate answer to this challenge. However, additional energy savings could be achieved by applying demand controlled ventilation when the internal loads vary significantly. A CO2 controlled ventilation system has been installed in a conference room with high variable occupancy in mid 91.
Contains 16 pages as follows: The role of the Air Infiltration Centre; Introduction to the Air Infiltration Handbook; Indoor air quality and minimum ventilation; Effects of energy conservation measures in existing buildings; A simple method for representing the total ventilation behavior of an apartment building; Tracer gas measurements in low leakage buildings; Influence of different parameters in infiltration heat loss; Air flows in building components; Air infiltration site measurement techniques; Long term infiltration measurements in a full-scale test structure; Continuous measurements