Provides the text of the 68 papers presented at the symposium, arranged under the following headings - Plenary session, Advanced developments in ventilation, Control of toxic and explosive contaminants, Advances in tracer gas use, Ventilation for residential and modern office buildings, Advances in local exhaust technology, Ventilation for control of carcin- ogens and biohazards, Ventilation measurement and control, Sources emission rates, Filters, Air recirculation and energy conservation.
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
Reviews the scientific literature on indoor air pollution. Low-pollution design and construction techniques employed in the Sunnyhill Low-Pollution Research Centre are outlined in detail and suggestions are made on their applicability to new and existing housing in Canada. The study recommends a four-fold approach to the indoor air pollution problem by government and the building industry: A) short-circuit major potential hazards, B) deal with low-pollution housing needs, C) spread and apply present knowledge, and D)foster more research and discussions on regulation.
A single family residence in St. Paul, Minnesota, constructed in 1957, was retrofitted in 1983. This resulted in approximately 50% reduction in annual heating consumption compared to the average consumption over the previous three years. However, the occupants complained of poor air quality. Measurements indicated that total particulates, CO, CO2, relative humidity, and temperature were at levels of some concern; NO2, radon and formaldehyde concentrations were not significant.
Covers maximum permissable levels of various substances, including tobacco smoke, asbestos and benzole, found indoors. The reduction of formaldehyde levels is given special attention.
Identifies sources of gaseous, vaporous, particulate (inert and viable) and radioactive contaminants within nine functional categories of a hospital. Preliminary criteria for control purposes are recommended, and available methods of control are reviewed. It is concluded that control of gases, vapours and radionuclides may be as important to occupant well-being as control of viable particulates, and that air distribution patterns within and between rooms are as important to dilution and removal control as the quantity of air supplied to the rooms.
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.
Direct gas fired heated make-up air is used in industrial buildings to replace exhausted air and to achieve a comfortable temperature while avoiding draughts. This study presents the results of an investigation of the pollution from such a system under different conditions.
The sink or removal rates for two reactive indoor air contaminants (NO2 and SO2) were evaluated in an environmental chamber as a function of material type (painted sheetrock, wallpaper and carpeting), variable surface area of the material, relative humidity and air mixing. Sink rates for SO2 are generally higher than those for NO2. The sink rates for NO2 and SO2 were found to increase with material surface roughness and material surface area. Increases in relative humidity had a pronounced positive impact on SO2 sink rates and a smaller but significant impact on NO2 sink rates.
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