English

R-2000 Homes have specific requirements for mechanical ventilation, usually incorporating heat recovery ventilators. Performance testing was carried out on 12 residential heat recovery ventilators in 1984, representing the range of equipment

Approximately 40% of the energy consumption in Sweden is utilized in the heating of buildings. In order to reduce the amount of energy utilized for heating purposes, more stringent thermal insulation requirements for buildings were introduced.

Radon in indoor air is discussed in the perspective of the effective dose equivalents from other sources of radiation. Estimates of equivalents from indoor radon and its contribution to lung cancer incidence are reviewed. Swedish experiences with cost effective remedial actions in a cost-benefit perspective.

This report details the development and field testing of a passive sampler system to collect gaseous and particulate contaminants in indoor air and the evaluation of the collected materials for biological effects using a simple bioassay system. The passive sampler-biossay system is a cost-effective objective method for determining indoor air quality.

Indoor air quality is regarded as the single most important health issue facing us in the 1980's. The total number of serious health effects related to IAQ in non- industrial buildings have been miniscule compared to the total building stock.

A benchmark study by Geomet Technologies, Inc, is developing data on the air quality effects of weatherizing a home. One effort under this study has bee nhas been an experiment carefully designed to quantify the relationships between the thr

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.