For that study, the transfers of air across revolving doors have been observed , in that aim a small-scale laboratory model was used that revealed the existence of a critical revolution rate , where transfers are maximal for a given combination of door geometry, revolution rate and temperature constrast. So two transfer regimes for revolving doors are possible. The potential implications to heat losses across the doorway and ventilation driven by the door are discussed in that paper.
In this paper, the proposition is to use free wind in order to create suction pressure within a ventilation duct with no consumption of commercial energy. The possibilities of this suction cylinder concept in a ventilation system are discussed. A CFD code was used for the simulation. The first results are promising
During renovation work of an old military building, the coal tar pitch that was used as a traditional water barrier, was left under the new carpeting. After the renovation, as office workers complained about bad and stuffy air, an AIAQ survey has been conducted . The VOCs were analyzed and determined by active sampling on TENAX TA sorbent, thermal desorption and gas chromatography. Most of the samples included the same volatile polycyclic aromatic hydrocarbons (PAHs) as the coal tar pitch did.
Identifying optimal conditions for both human health and work productivity in office rooms was the aim of this study based on published reports and other information concerning air-flow and temperature in Swedish office buildings.
An experimental study was carried out to characterize the hybrid ventilation system in residential apartment in the Porto aera. The results of the field experiments in the summer are presented .
This paper reports the design concept and outline of that task ambient air conditioning system with natural ventilation along with the measurement results.
The aim of this paper is to study the impact of outdoor and indoor sources in a school environment.PM10 and PM2.5 measurements were made inside a portuguese classroom and compared with outdoor PM10 concentration to study the impact of ventilation in respirable particles reduction.
Ozone has direct, and adverse effects on human health. It can initiate reactions that may produce irritating products.The authors present the results of their study on the influence of the reactions ozone-limonene on the perceived air quality (PAQ) . Six different realistic concentrations of ozone and limonene, separately or together were tested in four identical and adjacent offices.
This study developed a CFD technique to investigate indoor airflow patterns combined with PM1, PM2.5, PM10 removal ability in ventilated multi-room buildings.The simulated results showed that coarse particles were easier to be removed out of the building than the fine ones and that indoor partitions increased particles deposition and decreased particle escape.
Finding an effective ventilation system that can contribute to minimizing the airborne transmission of infectious diseases in hospital wards at relatively lower cost was the aim of that study. The authors investigated the penetration of exhalation jets from a lying person and the distribution of exhaled droplet nuclei in a ward with three different ventilation systems (mixing, downward and displacement ventilation).
Login