English

Describes the ways heat is lost through doors, including flow characteristics, the effect of wind and the effect of temperature difference. Suggests that automatic doors will pay for themselves in terms of energy saved by cutting heat loss through entrances.

Gives a series of short articles on air quality, air infiltration, and the ventilation needs of low energy buildings. These are -< 1. Sandberg M. Quantifying the pollution. Defines the quality of ventilation< 2. Warren P. Predicting infiltration rates. Explains BRE's method of predicting air infiltration in houses< 3. Getting close to zero. Describes the low energy EKONO office complex< 4. Sherman M. Grimsrud D. Which ventilation system? Shows that the choice of the economically optimum ventilation system depends on the tightness of the building.

Using miniature perfluorocarbon tracer (PFT) sources and miniature passive samplers, tests conducted in the lab and in a typical home successfully demonstrate the utility of the PFT kit as a means for implementing wide-scale infiltration meas

Studies a modern energy efficient office building in a series of experiments with mobile laboratories connected on-line with the building. Measures inorganic air contaminants (CO, CO2, NO2). Makes off-line measurements of volatile organic con

Examines airflow in the Glowworm cave of New Zealand using conventional methods together with experimental procedures using SF6 and CCL2F2 tracer gases. Results show that the rate and direction of airflow are a direct response to a thermally

Briefly reviews different types of air-to-air heat exchangers, and their relative efficiency. Discusses their effectiveness in removing indoor pollutants such as radon and formaldehyde from tight houses.

Studies a sample of 58 occupied homes in Rochester NY to assess 1. the effectiveness of construction techniques designed to reduce air leakage 2. the indoor air quality and air-exchange rates in selected airtight houses and 3. the impact on

Decribes the "collector chamber" method, where a room or whole building is pressurised and the air leaking through the target areas is collected with apressure compensated chamber to a measurement device.

Illustrates some practical aspects of the use of one IR camera and associated equipment discusses some of the problems in interpretation of some pictures representing temperatures of the inside and outside surfaces of buildings particularly problems due to residual effects of the sun on external surfaces, reflection of sunlight into the IR camera, storage of heat from the sun in walls, and cold spots inside a building caused by heat loss by thermal bridges or cold-air infiltration.

Describes the Mobile Infiltration Test Unit (MITU) and its instrumentation, including some preliminary tests of the individual measurement systems. MITU has a completely automated data acquisition system that records air infiltration rates, surface pressures and weather as half hour averages. Theshell of the tracker is well sealed and the quantity ,type and distribution of leakage area is controlled using removable leakage panels in 16 window openings.