In large areas of the Swiss Alps, the high radium content of rocks and soil, which results in high source terms for radon from the ground, may produce considerable indoor levels of radon in dwellings with low air infiltration. During the winter
There are a number of reasons to question whether regulation should be the primary means of dealing with indoor air quality problems. The nature of hypersensitivity to indoor pollutant exposures is such that any practical form of regulation m
Examines the causes of condensation problems and ways of reducing or eliminating them. Deals with diffusion through the building envelope, mechanical dehumidification and ventilation. Considers condensation inside cavities and roof spaces.
The prospective study included two groups, a study group, which had retrofitting of their flats, and a control group not exposed to environmental changes in their homes. The results clearly demonstrated a number of positive effects of the replac
New energy conservation policies in New York State are emerging in response to concerns about poor indoor air quality and related public health risks. The evolution of policy has been away from the promotion of energy conservation without explic
The amount of outdoor air supply required in rooms were no one was smoking and only body odour was pesented was investigated using a climate chamer, under clean room conditions. Ten subjects were confined in the room and five panels outside of the room stated the odour level in the sampled air from theroom when compared to clean air. Experiments were performed in four steps of 5,10, 20 and 30 CMH per person. Room temperature was either 22-23 deg C or 32-33 deg C with a relative humidity of 50-60%. The higher temperature was used to study the influence of body odour in sweat.
The problems associated with the measurement of ventilation rates and air movement patterns in large single cell buildings which were unoccupied and unheated were investigated using the tracer gases nitrous oxide and sulphur hexafluoride.
A report from the research and development programme Domestic Ventilation is presented. Describes quantitative and qualitative experimental investigations in two flexible test houses of identical size, structure and thermal insulation to compare various ventilation installations and devices under natural weather conditions. The comparative criteria were air infiltration rates and air change, ventilation heat losses, operational behaviour, possible requirement of auxiliary energy, problems and weak points.
Notes the trend to installing windowless kitchens, bathrooms and W.C.s in the internal zones of dwellings. Describes a research project to measure for internal kitchens the energy consumption and emission of equipment, the total daily energy consumption, air temperatures, air humidity values during cooking, comfort and air speed. Illustrates the test kitchen and gives the results of measurements of around 100 days of simulated operation for a household of four. Notes the consequences for recommended normal and peak ventilation rates.
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