Describes a project for the design, construction and evaluation of a mechanical ventilation system of small dimensions, easy installation and extreme simplicity.
Reports on project designed to illustrate building and ventilation solutions which are or which can be expected to reduce the radon daughter content in indoor air in existing buildings or to prevent excessive radon daughter contents in newly-
The levels reported in diverse publications of by products of cigarette combustion (acrolein, aldehydes, aromatic hydrocarbons, carbon monoxide, nicotine, nitrogen oxides, nitrosamines, particulates, and others for which scattered information is available - HCN, ketones, nitriles) are summarized in tabular form. Summaries also include information on test conditions such as ventilation, size and types of premises, monitoring conditions, number of smokers, and rate of smoking.
Compares the levels of possible cigarette smoke-related aerosols with the prevalence of health-related complaints in offices with different regulations about smoking, using data from two sources. The first was a review of 111 buildings with persistent building-related complaints and 32 buildings where there were no complaints. The second was a questionnaire completed by approximately 1100 employees from 9 buildings in New York City. The available data do not support a conclusion that increased reports of building-related complaints are associated with smoking.
The bacterial content of the air and physical environment of two crated veal calf units were monitored over the growing period of 16 weeks. The rate of release of bacteria colony forming particles (BCFP) from the calves was rapid.
This study examines the experimental determination of the apparent net formaldehyde source strength in a group of sixteen nominally identical wood frame houses built by one contractor using similar construction details and materials. The houses
The Aardvark automated system has been developed for continuously measuring the air-exchange rate and 222Rn (radon) concentration in an occupied residence. The air-exchange rate is measured over 90 min intervals by tracer gas decay using sulphur hexafluoride as the tracer gas.
To quantify the inferred elevated radon concentrations in energy efficient homes caused by lower air infiltration due to airtightness, an attempt was made to eliminate some of the more important conflicting parameters by measuring pairs of adjacent homes i.e. comparing retro-fitted or new houses with a conventional neighbouring dwelling.
Notes that the trend to airtight window constructions has upset the balance in buildings between moisture generation and its removal. Treats the factors which combine to determine whether a building will have moisture problems. Presents a procedure for the straightforward determination of the specific minimum air flow required in a particular building to prevent condensation on the inner surface of corners formed by two dimensional external walls. Determines the base air flow and the supplementary air flow for four models of representative apartments.
A simple means for determining air infiltration rates into homes and buildings for assessment of indoor air quality and energy conservation measures, based on a passive perfluorocarbon tracer (PFT) technique, was evaluated in a well-defined environmental chamber under experimental conditions of 1) constant temperature and ventilation rate, 2) constant temperature, variable ventilation
rate, and 3) variable temperature, constant ventilation rate.
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