English

Describes behavioural studies of the window opening habits of families in 123 houses to show strong seasonal pattern. During winter, window opening is closely related to moisture levels in the external air. In summer it is most closely linked to outside temperature. Larger families have more open windows. Re-examines ventilation criteria to suggest 3 seasons : deep winter with minimum ventilation for body odour removal ; spring/autumn for controlling moisture and summer for cooling.

Presents calculations of mean temperatures and relative humidities , shown graphically for three typical housing types assuming different heat and moisture inputs: 1) whole house uniformly heated with moisture from household activities uniformly distributed; 2) kitchen at constant temperature with high moisture emission rate; 3) unheated bedroom with two occupants assumed to be in thermalequilibrium with a room below at 15 c. Concludes that there is a certain critical amount of heat needed to give a relative humidity of less than 70% and thus avoid the danger of mould growth .

Describes pressurization method of measuring air leakage using a fan installed through an open window. Gives results of survey of 24 houses. Humidity, meteorological parameters, indoor particulate levels, measured equivalent leakage areas and other information were recorded. Finds that tight houses tend to havehigher humidity, that leaky houses require more heating energy and that houses where smoking takes place have higher air pollution levels than others.

Describes experiments emitting a gaseous tracer (methane) into a ventilated test room and measuring gas concentration with rapid-response hydrocarbon analyser. Parameters were contaminant source location, sample location and ventilation rate. Measures equilibrium concentrations and rates of decrease in concentration following cessation of tracer release. Subjects data to multifactorial analyses.

Presents documentative report of findings of research into effect of weather on internal environment in buildings. Presents results to promote their further application. Defines problem as that of applied meteorology and illustrates its distinguishing features. Evaluates physical assumptions made in establishing mathematical model. Notes limitations of results. Presents worked solutions for numerous locations in USSR and discusses way of improving calculation methods. Indicates direction of further research.

Investigates energy balance of centrally heated flat at coastal town of Kijkduin, based on daily figures of gas consumption and ventilation losses derived from meteorological conditions. Studies: 1) pressure difference over the building caused by windvelocity, wind direction and outdoor air temperature; 2) natural ventilation caused by pressure differences over fortuitous cracks and intentional opening of windows, grilles and shafts. Studies possibility of ventilation prediction via mathematical model.