This paper deals with the cooling of air in raised-floor data centers mainly used for housing computer and telecommunication equipment. To cool properly that type of equipment, the cooling air through perforated tiles must be adequately distributed. A one-dimensional computational model allow the study of the airflow distribution. The results presented provide an understanding of the fundamental fluid mechanical processes that control the airflow distribution through the perforated tiles.

The aim of that study is to evaluate the influence of temperature gradient and room air temperature (at 0.6 m height) on percieved air quality and Sick Building Syndrome in DV environment.

Multizone models have already been developed to predict airflow and pollutant transport between rooms , and zonal models too to calculate airflow and temperature distribution within single rooms.For that study, a zonal model has been placed within a multizone model to take advantage of those two types, the aim is to increase resolution in the prediction of local air flow velocities, temperature and concentration distributions between and within rooms.Theory and methods are presented in that paper.

A thermal comfort study is presented in this paper, a thermal manikin with a female body and 26 individually heated and controlled body segments is used in a field environment chamber. The aim of that study was to assess thermally non-uniform environment served by DV system using the manikin on the one hand, and to correlate the subjective responses of the sujects with measurements from the manikin.

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.