Infiltration models are used to simulate the rates of incoming and outgoing air flows for a building with known leakage under given weather and shielding conditions. 

A study was conducted in 40 homes in the areas of Oak Ridge and West Knoxville, in the summer and winter months, to quantify concentrations of COx, NOx, particulates, formaldehyde, and radon, as well as selected volatile organic compounds. 

In newly built well insulated houses, a wind of 4 m/s will produce an air change rate of almost 0.3 h-1. However it is considered necessary to obtain air change rates of 0.7 h-1. 

Examines providing some existing multifamily houses with mechanical ventilation with heat exchanger by installing new inlet air ducts to bring back the heat contents of the outlet air. 

Reviews literature on indoor air quality in housing, nature of contaminants and their sources, health effects, standards and guidelines, impact of air sealing on indoor air quality, sources of uncontrolled air leakage, airtightness and natural ventilation, airtightness of new and existing housing stock, air change in new and existing housing, impact of air sealing on airtightness and ventilation, indoor air quality in tight houses, impact of occupant behaviour on ventilation, measures to improve indoor air quality, identifying problem houses, indoor pollution control strategies, and ventila

Undertakes a comparison of full scale and model scale internal velocities of naturally ventilated rooms. The FSEC Passive Cooling Lab, an experimental building with a fixed roof supported by columns, whose floor plan and ceilings are reconfigurable, located at Cape Canaveral in Florida, is the building used in this study. The full scale tests were conducted during evening and early night to provide an almost thermally neutral atmosphere, during February and March 1982.

Reviews the literature on wind tunnel modelling of natural ventilation. Lists advantages of using wind tunnels. Discusses strategies for utilizing natural ventilation. Describes the mean windspeed coefficient method and the wind discharge coefficient method of estimating natural ventilation for design of buildings in hot climates, and gives their advantages and disadvantages. Gives criteria for constructing wind tunnel models.

Ventilation and air exchange in buildings and industrial plants can be induced by external winds and by buoyancy forces. The dependence of the air exchange and heat transfer on a large number of factors, including the detailed configuration of the building and surroundings makes an analytical or numerical analysis of practical design problems impractical, particularly when both the buoyancy and the wind-induced pressures are of the same order of magnitude.

The amount of air infiltration in a building, for given weather data, depends on the leakage and its distribution on the building envelope. In simulations of 17 designs of multiunit, multistorey buildings in Berlin, based on a typical meteorological year we obtained a wide range of infiltration values that varied according to the floor plan, the number and location of wall openings and cracks and the flow resistance relationship between the inside and the exterior of the building.

Reviews the present state of development of dynamic insulation systems. Describes the advantages and disadvantages and assesses probable applications. Earlier articles and reports on dynamic insulation are listed and commented on. The second part deals with the ventilation design aspects for practical application of dynamic insulation in buildings. One of the points is concerned with how the air flow through the insulation is affected by changing external climate conditions. The risks of condensation in the insulation, particularly with coincident flow systems, is discussed.