Presents a chart for predicting the percentage of dissatisfied people due to draught in ventilated spaces, based on the results of a research project on perception of draught.
Presents the major findings from two studies of moisture problems in crawl spaces. Three mechanisms play a role: transport by air via the floor, moisture migration through the floor and cold bridges. Special attention was paid tomoisture transport by air as it is an important cause of moisture problems. Some conclusions are drawn.
Follows an article by M.Cadierigues in Promoclim E, December 1984, describing radon in the inhabited environment. The phenomena is still not well understood in France, and the possible solution which ventilation may provide is yet to be establi
Experimental methods have been developed to determine rates of air renewal. Based essentially on the use of a tracer gas, these methods permit the determination of real values on the site of the building itself. The pressurisation method which e
Resulting from experiences of a project by the German National Energy Research Foundation (NEFF), and further investigations, a recommendation is presented on the permeability of building envelopes in residential buildings, according to on hand ventilation devices. To find out the permeability, the air leakage at 50 Pa is evaluated. This can be found out with the differentiated pressure reading of the building.
Air management in residential or tertiary usage buildings constitutes one of the key points of energy control in buildings. The principle themes concerning air management are heating or air conditioning, and ventilation and air renewal, mechani
Indoor air pollution is particularly noticeable today, resulting from the improvement of ventilation in building envelopes in order to economise in heat energy, and the consequent reduction of fresh air entry, leading to poorer air quality. The article describes the effect of tobacco smoke on the indoor climate of residential and office buildings and its effects on health, particularly its effect on non- smokers, or the passive effects of smoke.
Several papers discussing ventilation efficiency, effective industrial ventilation, the positioning of ventilation inlets and outlets, displacement ventilation and other applications of the concept of ventilation efficiency.
The recommended limits for formaldehyde in indoor air are 0.1 ppm (0.12mgm-3). There are several ways of measuring the formaldehyde concentration, including sampling tubes. Describes a newly-developed sampling tube measurement technique capable of detecting formaldehyde concentrations from 0.04 to 2.5ppm.
A mathematical model was used to describe the natural ventilation of a modern residential building for various building construction and meteorological data. The calculations showed that exhaust air shafts have a very positive influence and that separate consideration of wind and stack effect on thenatural ventilation of buildings leads to a wrong interpretation. Both major influences must be considered together.
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