Describes automatic equipment for measuring thermal comfort based on resultant surface temperature, convective heat flux density, air temperature and relative humidity. Results obtained in an environmental chamber are presented and evaluated.
This study used a constant concentration tracer gas measurement system to measure the air infiltration rate of three modules simulating residential buildings in Canada. The results obtained were compared with computer predictions.
Summarizes the factors affecting air infiltration, with definitions of the terminology used. Discusses minimum and optimum air change rate, and choice of ventilation system. Lists research in Switzerland.
Naturally ventilated containers for international transport of hygroscopic commodities are now well established. Both theory and practice show that the greater the vent areas, the wider the range of conditions under which NVCs will succeed, but there are no established values for acceptable areas. Thetheory, conception and utilisation of NVCs are reviewed. Different vent configurations are tested for simulated and for real voyages.
Contains references and abstracts on laboratory techniques for analyzing formaldehyde, methodologies for identifying and characterizing a wide variety of organic contaminants and selected field studies of organic contaminants inindoor air.
Discusses indoor occupancy factors, including window opening habits, opening of internal doors, time spent indoors and patterns of occupancy, for inhabitants of the United Kingdom.
The development and construction of portable test equipment to determine air leakage has made it possible to carry out measurements on a large number of dwellings built using different construction technologies. The recording and analysis of the data collected is presented in this paper. This makes it possible to propose a method for taking sealing defects into account in the calculation of air infiltration of dwellings.
Discusses the future prospects of domestic ventilation and whether mechanical ventilation will be necessary to satisfy requirements as windows become more airtight. Suggests use of centralized mechanical ventilation, with openable windows for summer ventilation.
The distribution and level of pressures due to the wind on the external faces of buildings condition the working of ventilation systems and hence the thermal losses. This article presents the results of wind-tunnel experiments imitating natural wind, in the form of a "mapping" of the mean pressure coefficients exerted on the ordinary forms of dwelling. Attention is also given to the local effects on extraction outlets on flat roofs.
The filtering effects of three types of air control systems at two wastewater treatment plants on viable particles were investigated. Aspergillus fumigatus and other thermophilic organisms were used as monitors for viable particles. The indoor concentrations of viable particles were found to be affected by building design and the use of conventional mechanical air systems. Viable particles of approximately 4.0 microm and greater in aerodynamic diameter were filtered from the air while respirable size particles less than 4.0 micromwere not filtered as well.
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