Studies the ventilation of 9 air-conditioned animal rooms used for both housing and experiments. Samples dust, measures ventilation rate by anemometers and by tracer gas decay, and uses settle plates to determine the number of airborne bacteria. Detects a high amount of pariculate matter emanating from the animals which might sensitize personnel working in these rooms. Previously, attention has been paid to the ventilation requirements of the animals but where people also spend several hours in animal rooms then safety conditions for staff must be considered.
Undertakes experimental studies to identify antecedent conditions of various health and comfort problems experienced by office workers in sealed, air conditioned buildings in New York City and Vancouver. Tries to relate building characteristics (paricularly of lighting and ventilation) to prevalence andincidence of reported health and comfort problems. Finds that changing both lighting and ventilation simultaneously results in a 31.2% reduction in reported eye irritation.
Uses social survey data to test the hypothesis that residential energy conservation measures have the effect of reducing air quality in the home and have a subsequent deleterious effect on the health of the residents. A measure of exposure to harsh chemicals at work is tested for its effect on health. Finds small but detectable amounts of carbon monoxide in more than half of the 173 homes surveyed. The CO levels are higher in homes with unvented kerosene or gas space heaters and homes with smokers present.
Describes a field method for surveying residences for indoor air quality. The method requires 2 days of field testing for each residence - a day to perform a multipoint tracer gas study to characterize the ventilation efficiency of the various spaces in the house and to determine the overall air change rate; and a day to measure contaminant concentrations in locations selected according to the results of the tracer gas study and contaminant generation locations. Describes and discusses results obtained by this surveying procedure in 3 energy efficient residences.
89 male and female judges have evaluated the intensity and acceptance of body odour when they enter 2 experimental auditoria occupied by 41-216 men. More than 1000 men served as occupants during 200 experiments. Varies ventilation rate, space volume per occupant, and temperature. Finds carbon-dioxide to be a useful index of body odour intensity. Finds no significant influence of space volume per occupant on odour intensity or steady-state ventilation requirement. Establishes a relation between the percentage of dissatisfied and CO2 concentrations.
Describes a climatic chamber used to measure the concentration of formaldehyde and other volatile substances which may be emitted by furnishing and building materials. The equipment consists of 4 climatic chambers of stainless steel, with a volume of 1.00 m3. The chambers are supplied with air at a constant temperature and constant relative humidity by an air handling installation. This installation can supply air within a temperature interval of 17-27 plus or minus 0.5degrees C, and relative humidity between 30-65% plus or minus 2%.
Sets out the results of research into ventilation and radioactive radiation in 20 private dwellings. All the houses had radon daughter contents in excess of 800 Bq/m3. One of the reasons for these high levels is infiltration of radon from the ground. Tests various methods for tracing the points where radon infiltrates into the house, and proposes measures for reducing the concentration of radon daughter products in the indoor air.
Presents the contents of a memorandum of evidence to the Royal Commission of Environmental Pollution. Treats exposure of the community to radiation caused by radon decay products in indoor air, which contributes about a third of the overall effective dose equivalent received annually by an average person in the UK. Treats surveys to improve the estimate of indoor exposure. Discusses the possibility of a radon limitation scheme.
Defines requirements for suitable indoor air quality and examines the technical and economical possibilities of suitable methods of ventilation. Differentiates between densely populated places (meeting places) and others of low occupancy, such as offices and living rooms. Finds that the most efficient way of satisfying hygiene requirements is by controlled air renewal, and that to achieve this mechanical ventilation according to DIN 1946 should be installed.
Residential energy consumption can be decreased if air infiltration is reduced. However, reduced air infiltration can lead to problems with indoor air quality (eg excess humidity and high levels of indoor-generated air contaminants.). One sol
Login