ventilation needs

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

Discusses the concept of ventilation efficiency. Sources of moisture production in residential buildings are given, and the minimum ventilation requirements for moisture removal are presented for a typical 3 person dwelling for various outdoor temperatures.

Briefly discusses the major concerns regarding indoor climate raised by the 'Indoor Air 1984' Conference in Stockholm and other such conferences: the need for an international information system on the influence of building materials andventilation of occupant activity, building materials, operation and maintenance; ISO and ASHRAE standards; passive smoking; radon; sick buildings, humidity; ionisation; and ventilation efficiency.

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.

Body odour emitted by 16 occupants at three activity levels (1, 4 and 6 met) was evaluated by 30 male and female judges. The judges assessed, when entering the occupied room, the intensity and acceptability of the body odour. CO2 concentration and air change rate were measured. For the same CO2 concentration, the body odour intensity was of the same magnitude whether the occupants were sedentary or engaged in physical activity up to 6 met. But odour caused by physical activity was less acceptable than odour from sedentary occupants.

The participating countries of Annex IX "Minimum Ventilation Rates" study emission rates and time dependence for building materials and their dependence on various factors including human behaviour; indoor transfer and interactions; control and air treatment; modelling indoor pollution including economic and social factors; strategies for indoor air pollution control under the restraints of energy conservation. The results of this international programme will be pooled to produce recommendations for guidelines.

Regulations relating to building design, construction and occupancy in the various States of the USA are examined to assess the technical bases for their ventilation provisions and to determine if they permit innovation in indoor air quality technology.

A total of 200 experiments on evaluation of body odour were performed in two identical auditoria at the Technical University of Denmark at ventilation rates of 0.4-26 l/s/person, with an air space per occupant of 4-21 m3 and with air temperatures of 17-26 deg C. Ten minutes before the end of each 35 minute lecture period 10 judges entered the space and were questioned concerning their acceptance of body odour. They were also asked to evaluate the odour intensity on a fixed scale.

Describes the physics of moisture in the home. Suggests four basic strategies for dealing with excess moisture buildup in the home: 1) minimise the entry and release of moisture, 2) protect building components with vapour barriers, 3) remove water vapour with ventilation or dehumidifiers and 4) raise theinside surface temperature of windows.

The work to be described here is an elaboration of Lehmberg's preliminary experiments. The object was to study the general problem of ventilation odours under normal conditions, comparable to those in schoolrooms, offices, homes and the like with the possibility of establishing ventilation requirements for various groups of individuals, including grade school children and adults, under representative winter and summer conditions. Three methods of odor control were studied dealing with personal sanitation, ventilation, and air washing.