Presents results of measurements of ventilation rates in the SEGAS test house. Describes the house and its heating and mechanical ventilation systems. Measurements of ventilation rates were made using helium as a tracer gas. Tests were made both with the house sealed to block obvious paths of infiltration and with it unsealed. Tests were also made with the house mechanically ventilated and with supply and extract systems working. Presents results of tests and examines the effect of variation in mean wind speed on ventilation rates.

Describes methods used at ECRC for measuring the ventilation rate in houses. Two tracer gas methods are used, the decay method and the constant concentration method. Measurements have been made using both nitrous oxide and carbon dioxide as tracer gases. Also describes test of air leakage made by pressurizing the entire house. Gives for each method a detailed description of the measurement technique.

An energy saving survey was carried out in an office building in Stockholm during the autumn of 1978. The measures which were proposed are now being carried out. This report details the measurements made which include, airtightness testing of the building, pressure drops across facades, air flow measurements, temperature measurements in ventilation systems, temperature measurements in rooms, boiler combustion efficiencies, electricity consumption, oil consumption and thermographic inspection.

During the period 1973-76, measurements in housing where particle board is used as a building material have revealed a reduction in the formaldehyde content of the indoor atmosphere from 0.64 to 0.40 mg/cu.m. under standard indoor climatic conditions. A corresponding although slighter reduction in therelease of formaldehyde from particle board was found under controlled conditions in climatic chambers. Suggests these improvements in the quality of particle board will suffice to fulfill the proposed limit of 0.40 mg/cu.m.

Describes some improvements to existing windows, such as increase of thermal insulation and airtightness, easier handling of windows consisting of separate casements, repairs, maintenance and alterations to be made when old windows are replaced.< In the section dealing with thermal insulation, tests were carried out by installing a third pane in the windows in 10 houses, and by reducing ventilation between the panes in 20 houses.< Repair of some types of damage was observed in some case studies.

Lists sources of radon and its isotopes in housing. Diagrams illustrate radon content as a function of air change rate. Estimates risk factors. Notes lack of coordinated national or international regulations. Relates number of lung cancer cases caused by radon to total recorded. States recommended maximum permissible concentrations.

Air pollution from combustion of fossil fuels can be injurious to health causing damages to air passages. Discusses health risks caused by radon emission in houses. Tables illustrate expected effects of exposure todifferent pollutants, causes of death, 15 years cumulative mortality data, mortality distribution comparison between UK and Sweden, risk of lung cancer caused by radon exposure, and effects on health caused by energy saving methods.

Notes that in addition to multiple glazing and storm windows there is a wide range of insulating options available. These products include blinds, shutters, plastic films and shades. Briefly discusses the different products. Gives tables of systems showing manufacturers and performance data.

Describes the six low-energy prototype houses constructed by the Low-Energy Project of the Danish Ministry of Commerce. Occupation of the houses is being simulated for approximately 18 months. Gives photograph, floor plan and description for each house.