The ventilation recommendations set out by the British Standards Institute Code of Practice, the Building Research Station Advisory Papers, and CIBS are outlined.

The aim of this research effort was to develop a mathematical model and digital computer program for accurately calculating the energy required by residential housing units. This model was used to establish an accurate procedure for determining the monthly and seasonal energy requirements of alltypes of residential structures. The mathematical model and digital computer program developed were verified by extensive calculations and field measurements applied to nine residential dwelling units.

At the HPAC laboratory of the State Research Centre, supply air tests were conducted partly with a supply air window, partly with a porous, 0. 1m thick insulation above the window. The best results were obtained with low supply air velocities allowing the air to flow down close to the outside wall. Thetests with a supply air window of about 1m*1m showed that an upward air-flow between the panes gave better results then down- flow. The air distribution was improved with a guiding vane in front of the air-flow holes in the window frame.

This practice represents a standardized technique for measuring air leakage rates through a building envelope under controlled pressurization or evacuation, and is applicable to small temperature differentials and low-wind pressure conditions. It is primarily intended for use in one- story buildings.

The perfomance of single-family houses built to the new swedish building code was considered. In the code, the requirements for thermal insulation for different building sections were strengthened, and completely new requirements for a building`s airtightness were introduced. One site- built design acheived a estimated 1/3 reduction in energy consumption, but another less airtight factory-made house showed serious shortcomings in the indoor climate acheived.

Air pollutants caused by man were measured in a test chamber. Variables were number of persons and their activities and the rate of the air change. During test sessions of two hours the temperature, the relative humidity, the carbon-dioxide and intensity of odors were measured. There was a significant correlation between the odor intensities and the concentrations of carbon-dioxide independent of the number of persons and the air change rate.At air change rates of 12-15m**3 per person and per hour, the carbon-dioxide concentration was not higher then 0.

An attempt was made to make the super-insulated Saskatchewan Conservation House as air-tight as possible, to avoid heat loss. By lapping all joints in the vapour barrier over solid backing, by continuous sealing of all joins, and by protecting the vapour barrier with solid covering, the natural air-change rate(A/C)was decreased to 1/20 change per hour. At this rate, induced air change was necessary to control odour and humidity. Most of these details could be modified to make any insulated house air-tight.

Reviews the important variables which need to be known when analyzing wind loads on low buildings. These include reference height, roof angle, end zones, internal pressures and openings, surrounding terrain and buildings.

The method to calculate flow processes in multi-storey buildings having uniform storey arrangement(residential and office buildings) can be simplified to an extent enabling calculation by hand. Nomographs are given to calculate flows in sectional and central corridor buildings. The air flow rates depending on the action of wind, buoyancy and exhaust air plant operation can be derived from these nomographs for different combinations of flow resistances of the buildings. The latter factors may be included in thecalculation either individually or in any combination.