Reducing the air change rate of a house increases the concentration of pollutants in the indoor air. These pollutants are identified and located within the residential structure. Air-to-air heat exchangers are suggested tocontrol ventilation, and the three basic types described.

Complaints related to moisture problems in houses which had been air sealed, led to a study of indoor air quality in 20 weatherized demonstration homes in the Cambridge, Ontario area. 

Using meteorological and physical data, a model simulating pressure and air mass flow distribution in buildings was produced using the method of non-linear networks. It was used to study wind and buoyancy effects on mechanically ventilated buildings. Contents include: natural ventilation in high rise buildings with and without air-handling equipment, a study of a hospital, and calculation of the annual heat load for ventilation.

In countries such as the United Kingdom that possess a temperate climate, the majority of buildings are not air-conditioned but depend upon natural ventilation and relatively simple heating systems. Openable windows are used to reduce the in

This report discusses the extension of an infiltration predicting technique to the prediction of interroom air movements. The airflow through openings is computed from the ASHRAE crack method together with a mass balance in each room. Simulta

Thirty residences were monitored for nitrogen dioxide, carbon monoxide, formaldehyde, respirable suspended particles, and air exchange rate for forty-one one-week periods using integrating samplers. The residences were located in the northwest a

Evidence of the importance of air infiltration in moisture control in building structures has been steadily accumulating. A general model of moisture behaviour in structures has been built up including for the effects of cavity air leakage, for the hygroscopic behaviour of timber, for the effects of condensation and various geometric factors.

Continuous monitoring of NO, NO2, CO, CO2, and O2 depletion was conducted in 14 residences (13 with kerosene space heaters and one without) in two locations in the residence (room with the heater and bedroom) and outdoors. The continuous monitor

Investigates the generation of pollutants from unvented convective and radiant kerosene heaters in a residence over a 3 month period. The measured concentrations of carbon monoxide were low. However, under the conditions of use which were studied concentrations of SO2, NO, NO2, and CO2 reached or exceeded levels recommended for indoor air. Further, it was demonstrated that using a semi-open door to provide ventilation did not reduce concentrations of pollutants to acceptable levels.

Indoor air quality sampling strategies and analytical techniques have changed significantly in the past ten years. The changes reflect both the shifts in study objectives and the development of new forms of instrumentation. Toillustrate these trends, this paper describes early field techniques for measuring indoor air quality using a heavily instrumented mobile laboratory that is suitable for measuring one building intensively for up to four weeks.The style of measurement now is complemented by large field survey projects using passive samplers as the dominant instrumentation.