The results of a field study about environmental comfort investigations in classrooms are presented in this paper. Thermal, acoustic, visual and air quality investigations were carried out in 17 high-schools and university classrooms in the Provincia di Torino, during the regular lesson periods and during the heat period. A subjective survey was performed at the same time. The results were compared.

In this paper, through CFD simulations, movement and evaporation of small droplets in the room air are investigated. The authors present a modified drift-flux model. Their numerical simulations reveal the characterization of the distribution of the large evaporating droplets in the ventilated room air : a combination of settling feature when droplets are first generated and released, and dispersion feature after the droplets are evaporated to be either very fine or become droplet nuclei.
According to the diameter of droplets , the dispersion or settling feature is dominant.

The flow field of industrial ventilation hood induced by the combination of extract-flow and crosswind is affected by the oblique angle of the hood's set-up. The size and scope of the capture zone of toxic gases are highly influenced by the extract velocity at the hood opening and the angle of the opening to the direction of the environmental air flow. This paper presents the results of the capture efficiency calculated by numerical method.

This paper is a review of the existing methods and techniques that allow the reproduction in laboratory of the real behaviour of filters, mainly the electret filters. First, the principles of the ways the electret filters work are described, along with their performances when installed. Then the testing methods for filters are presented with the differences between the performances measured in laboratory and in-situ. Finally, the results of intercomparison tests organized by Cetiat 's company in 2004 for Eurovent on the basis of EN 779 Annex A - test methods- are presented.

For that study, the dispersion of airborne contaminants in a work environment has been tested with physical measurements, and the data collected has been compared to CFD simulations coupled with mathematical evaporation models. The results are presented.

This paper deals with a CFD study of containment of airborne hazardous materials in a ventilated room containing a downdraft table. A high Reynolds number k-epsilon turbulence model was used for the modelisation CFD predictions have been examined for several ventilation configurations Findings are presented.

For that study, six different types of in-room air cleaners (ACs) were investigated. Their ability to remove and/or inactivate airborne bacteria and fungal spores has been quantified. The efficacy of combining Acs with upper-room air Ultraviolet Germinacidal Iirradiation (UVGI) was investigated too. Tests and results are presented.

For that study, a model was developed to simulate adsorption and desorption of multicomponent organic compounds in a charcoal filter and to predict its lifetime. A method was also proposed to estimate parameter values of organic compounds with unknown properties. The comparison of the simulated and measured adsorption breakthrough curves for a multicomponent system allowed the validation of that newly developed simulation system

Minienvironments systems are reported to provide effective containment for critical contamination control. But prior to that study, little information was published or available to quantify the energy performance of such systems. In this paper, quantitative results of a study on the operation performance of a minienvironments are presented.

That research project of the CFD Lab of the University of Tennessee in collaboration with the civil aerospace medical institute (CAMI) of the Federal Aviation Administration aimed at validating the CFD prediction of the ECS-generated ventilation velocity vector flow field of a wide-body aircraft passenger cabin. Measurements were carried out in laboratory and in an identical wide-body aircraft in cruise flight at altitude. Simulations with CFD codes were conducted. The results are presented and assess CFD alogorithm/code strengths and weaknesses.