English

Abstract Buildings equipped with state of the art heating/cooling systems and their energeticoptimization require air and radiation temperature value pairs set by controls so, that the value pairsfall within a range considered as comfortable. Many diagrams have been published in the literature,dimensions and shape of the areas are significantly different neither the basic principle of theirdrawing up is described, therefore it is necessary to develop a diagram of temperature comfort rangeon a scientific basis.

The results of an interdisciplinary investigation of the thermal environment and the space heating in 20 low-energy terraced houses are presented in this paper. In that aim, measurements of physical parameters have benn conducted along with qualitative interviews with the occupants. Outcomes of that investigation are presented.

Gaussian-type dispersion models are currently used in most local authorities in UK, for the prediction of the air quality in urban areas. But this study assesses the suitability of the general CFD code (Phoenics) to be used in integrated urban air quality modelling for regulatory purposes. In the city centre of Glasgow, a urban air quality model has been developed by integrating traffic flow date, traffic pollutant emission date, and a 3D CFD dispersion model of a complex configuration of street canyons.

The aim of this paper is to study the interactive phenomena in buoancy-induced natural ventilation in a full-scale enclosure , with upper and lower openings on one of the sidewalls. Experiments reveal the interaction between the mixing and the displacement ventilation with the opening of the lower vent to different heights while the upper vent is kept fully open. The experiments are in agreement with a previous theoretical model.

The airflow interactions that take place between components in louvered ventilators have been investigated in a series of laboratory experiments and described in this paper. The aim was to improve the design and performance of ventilators used in buildings equipped with natural ventilation systems.

Indoor air quality directly impacts the health of patients and hospital staff. In-room air purifiers in supplement to existing air ducts and vents, appear to be a wise investment. This paper presents the various options for the selection of such in-room air purifiers to supplement indoor air quality in a hospital . At the end of this report, the Blueair Air Purification and filtration technology is presented .

The overburden removal and mining process can be extremely dusty and therefore cause excessive dust exposure. A cooperative research effort has been established between NIOSH, US silica Co, Clean Air Filter Co and Red Dot Corp to lower respirable dust levels in an enclosed cab on an older surface drill at a silica sand operation. In that aim, once the testing and sampling completed, modifications were made to improve cab's filtration and pressurization system that appear to be the two key components necessary to improve air quality.

The aim of this paper was to check whether an integrated air purifier is suitable for controlling air quality and for the prevention of virus transmission through the central air system. Based upon the integrated technology of high voltage static electricity and UV technologies an air purifying device has been developed. An experimental platform was built to test that device. Measurements, results and conclusion are presented.

To assess the effectiveness of a new generation of three high volume, ceiling-mounted , high efficiency particulate air (HEPA -ultraviolet (UV) air filters (HUVAFs) for the removal or inactivation of bacterial aerosol was the aim of that study. To be tested, those filters have been installed in an indoor therapy pool building during 2 years. Materials and methods used are presented along with the results of the controlled chamber study and indoor therapy pool building studies.

The evaluation of the effectiveness of a portable high efficiency particulate air (HEPA)-filtration unit to reduce MRSA environmental surface contamination within a clinical setting, was the aim of this paper. Contamination rates have been measured at different air filtration rates (60 - 325 m3/h) and compared with no air filtration. It appears that this portable HEPA filtration unit can significantly reduce MRSA environemental contamination within patient isolation rooms and be complementary to existing MRSA infection control measures.