English

This paper deals with digital airflow simulation methods inside a painting booth with ventilated pits. Air movements and pollutant dispersion are analysed when painting the underside of an HGV trailer chassis. For different booth ventilation operating conditions, the airflow structure was studied.

Thanks to the introduction of guidelines covering infection control, many facilities have been designed and built, and practical experience has been gained. This paper focuses on specific requirements for isolation rooms and operating rooms for design and infection control during construction and HVAC equipment. The current practices, standards and research relevant to operating room HVAC are presented.

OQAI (French Permanent survey on Indoor Air Quality) has collected a wide knowledge related to Indoor Air Quality in France . In this paper the state of the art is presented, it has been widened thanks to the result of 15 international surveys on IAQ , carried out in the similar way with in situ measurements. The results of those enquiries are presented . That international panorama will help for strategies in future OQAI campaigns.

This paper describes a series of laboratory simulation experiments that provide evidence of the very considerable benefits of providing good indoor air quality - whether it is achieved by careful selection of building, furnishing materials and office equipment or by providing clean outdoor air at an increased rate- The conclusions drawn were then validated for other sources of indoor air pollution and in field intervention experiments carried out in call-centres in Northern Europe and hot humid tropics .Those findings have implications for productivity and an efficient use of energy.

That study gives a snapshot of ventilation and IAQ in a small sample of a range of types of new homes built in England since 1995 . Simultaneous measurements of ventilation and IAQ are combined together with records of occupant behaviour and household characteristics.
The study was carried out in three stages :
Validation of a tracer gas method (PFT) for air exchange rate measurement
Study of indoor air quality (IAQ) and ventilation in homes
Detailed study in 5 homes, with a focus on short term peak concentrations of pollutants

The objective of the study was to investigate the human response to five air terminal devices (ATD) for a personalized ventilation system (PVS). All the systems were tested in an experimental office, they all improved the perceived air quality at the workstation. The round movable panel was the ATD most preferred for the subjects, among the systems studied : it provided high perceived air quality and thermal comfort for subjects. The thermal environment created with all the systems was assessed as acceptable.

In the second part of this paper a simple two-way simulation method is implemented using CFD software to obtain the multiplicity behavior of laminar and turbulent indoor airflows in two-zone naturally ventilated buildings. The method used proved effective in detecting and isolating multiple solutions for different building geometries. The results and simulation data are expected to be useful for building ventilation design and smoke control engineering.

For that study 60 subjects in groups of six, were exposed for five hours to two levels of air pollution, four levels of absolute air humidity, and three air temperatures . These conditions were established simultaneously in two adjacent climate chambers (one with clean air, and the other with air polluted by carpet and linoleum). Nine objective medical tests of eye, nose and skin function were applied. The results and conclusion are presented.

This paper gives some rules for the design of commercial kitchens concerning thermal comfort, heat exhaust, cooling systems, capture and containment of effluents .

An overview of the standards developed under the EU mandate to CEN is presented in this paper.Some information on the CEN standardisation work is given along with information on how to participate and where to retrieve the information.