Since 1973 there has been greater emphasis in Sweden on energy production and energy saving, but the products have often been of dubious design or benefit, and too expensive to be applied to normal residential Scandinavian housing. The economic
The article discusses how far the builder is to blame for condensation and its subsequent problems of mould growth. The UK Building Regulations of 1985 for ventilation and condensation do not go far enough in discouraging inadequate forms of
The article looks at the attitude of UK building regulations to ventilation, summarising sections F, G and H of the 1985 regulations. Part F concerns ventilation of dwellings, buildings which contain dwellings, rooms containing sanitary conveniences and bathrooms, as well as provision of ventilation forthe roof space. Particular attention is given to the demand for ventilation from heating appliances, including open solid fuel appliances, cooker and open flued appliances.
A simplified electric analogue method to analyse the thermal performance of naturally ventilated buildings is presented. One of the main features of the method is that empirical constants in some equations account for typical rates of natural ventilation in conventional buildings. Another feature is that a very high degree of lumping is attained by using a special calculation procedure to estimate effective capacity values of building elements. The method is therefore extremely easy to use. Predictions are compared with measurements. The comparison is acceptable for design purposes.
Failure to understand the principles appropriate to a particular roof makes it all too easy to introduce condensation problems, often serious ones. A distinction between surface condensation and interstitial condensation is made. Before attempting work on any roof it is necessary to determine how the roof is designed to work. If the principles are wrong, the whole design should be checked and if necessary corrected.
Draughtproofing the windows and external doors of UK dwellings can be an effective and relatively inexpensive means of comfort and reducing heat loss by natural ventilation. In most situations, draughtproofing is unlikely tocause any deterioration in the quality of indoor air. There are however a number of simple checks which should be made prior to installation to ensure that the ventilation requirements of the dwelling and its occupants are satisfied.
The objective of this research is to obtain a correlation between air and sound leakages through slits. Audible sound, in the frequency range from 160 to 8000 Hz, is provided and sound pressure levels on both sides of the considered slit are detected by microphones, so that sound transmission losses can be obtained. Simultaneously, the air leakage through the slit under an inside-outside pressure difference of 50 Pa is also measured.
Points out that increased thermal insulation and draughtproofing of homes can increase the risk to health of indoor air pollution. Includes condensation as a pollutant along with associated mould growth. Notes collaboration by Pilkington the glass company and the Timber Research and Development Association plus Laing the housebuilding group, to combat condensation by passive ventilation. Treats sources of indoor air pollution - formaldehyde, asbestos, gas appliances, tobacco smoke, thoron, radon.
Measurements of the levels of nitric oxide and nitrogen dioxide emitted by radiant and convective space heaters revealed that the NOx emitted by the former was mainly NO2 while convective heaters produced mostly NO. As the air became vitiated, however, the convective heaters began to produce more NO2than NO. This evidence confirms that the nature of the NOx produced by a nunflued room heater depends on the type of heater and the conditions under which it operates.
Summarises measured data on energy savings from conservation retrofits in existing residential buildings, covering approximately 115 retrofit projects in four general catagories: utility-sponsored conservation programmes;low-income weatheriza
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