Describes a 2 year study sponsored by EPRI to ivestigate relationships between energy use, air infiltration and indoor air quality. Uses 2 bi-level, detached houses, identical in design and wind exposure. Continuously monitors parameters related to related to energy use, air infiltration, and indoor air quality.

Presents a study to improve knowledge of the air tightness of the building envelope. The airtightness of buildings was measured by the pressure method and a literature study was carried out of corresponding measurements inScandinavia. The air tightness was measured mainly in timber frame detached houses,in some detached houses of masonry as well as flats. Notes that minorsealing techniques can improve Finnish dwellings, which are leaky compared to Swedish requirements. States that ventilation, heating and air infiltration must be considered together.

Presents results of full-scale pressure measurements on 3 test houses. Discusses the influence of different input parameters, such as leakage characteristics and pressure distribution on the rate of air infiltration, employing a simple calculation model.

Continues on from a previous paper, which gives a theoretical framework for using moments of concentration histories as a means of assessing air quality. Gives a more detailed presentation of the test conditions and the results from each test, together with plots of concentration v.time graphs.

Notes concern in recent years about complaints by occupants concerning the air quality in internal rooms. It is usually necessary to carry out an analysis of the air conditions to discover the underlying cause of the complaints. Gives advice on analysis methods. Treats selection of the appropriate measurement method, and timing and location of the measurements. Demonstrates the measurement techniques by examples.

Indoor air quality is determined by the sources of the contaminants and the methods used to control their concentrations. To predict the quality of air, algorithms are needed to model the rates of generation, transfer and removal of contamina

Studies moisture conditions in homes in 2 studies. In one study, 17 homes in 4 states were probed in mid-March 1977, and all moisture content levels were found to be within the acceptable range of equilibrium moisture contents. Inanother study, collects data for 16 homes in north-central Utah, Southern Alabama, Northern Ohio and central Maryland. Makes measurements in each home for approx 1 week in the summer and 1 week in the winter. All homes have well-ventilated attics.

Reviews some of the factors which cause indoor air pollution. Includes a general introduction to the subject, lists of prevailing air pollutants and their sources, detailed data from research and stnadard methods of air analysis, a study of the relationship between indoor pollution concentration and health effects and current regulatory trends, especially in the USA.

Discusses the importance of local wind and temperature conditions and their effect on the air change rate between a building and its environment. Provides a descriptive model of air change rates and a building's microclimate. Describes methods which illustrate average wind velocity and effect of height and characterises wind spectra and turbulence intensity caused by velocity fluctuations. Discusses mechanisms which affect air change rates and climate comfort and gives an analysis of a simple model for random air leakage. Lists important and urgent research requirements.

Reports on symposium in Belgrade, 1978, on the consequences of blocked and contaminated ventilation ducts. Notes current research by Swedish Building Research Council into hospital ventilation systems and other work on aspects of contamination and its effect on efficiency. Also reports on investigations into ventilation in housing. Diagrams illustrate various parameters and the effect of cleaning and contamination on airflow and efficiency. Considers economic periodicity of cleaning. Stresses importance of cleaning heat exchangers. Article concludes with a subject bibliography.