English

A supply air window enables the pre-heating in winter of ventilation air before it enters the room.The window device must entrain into the room the air flow that would otherwise escape, it allows the absorption of the solar radiant energy and a low emissivity coating within the glazing assembly must be correctly located. To achieve a better performance of the window, tests were carried out. A simulation model was built and comparison of the results were made.

This study aims at demonstrating that semi-quantitative dampness/mold exposure indices can predict existence of excessive building-respiratory symptoms and diseases. Those findings justify action to correct water leaks and repair water damage in ordre to prevent them.

For that study, 24 healthy non-sensitive persons were tested to analyse the respiratory effects caused by exposures to office dust. The results of the study suggest that most of the tradiitional risk factors can be rejected as single responsible risk factor.

This paper is a clear presentation of the different available systems to ensure a good thermal comfort : the author starts with passive systems that maintain comfort without an extra energy consumption, carries on with the low-energy consumption systems that allow air refreshment ,
then refreshing floors and cool ceilings and low-speed ventilation are described , he ends with
air-handling devices to be installed in residential or collective housings.

This paper presents the latest edition of the standard 62.1. It combines the 62.2001 version with 17 approved addenda, all of them have been approved by both Ashrae and ANSI. The most significant changes involved the ventilation rate procedure, minimum ventilation rate table and outdoor air treatment requirements.
That document is easy to use for designers, code officials and others users .
That standard is continuously reviewed and revised through addenda to keep up with new research findings and experience from the field.

This paper describes a pilot study conducted in an occupied family house in Ohio to determine if a script-based protocol could be used to obtain data useful for the identification of the key factors affecting air-exchange rate (AER) and the relationship between indoor and outdoor concentrations of selected traffic-related air pollutants.

Ultraviolet germicidal irradiation (UVGI) systems are used to disinfect air, they consist in mounting shielded UVGI lamps at high level in an upper room zone, and the natural convection currents that occur in a room space carry airborne microorganisms through the UV field. This study demonstrates that the effectiveness of those systems is dependant on both the ventilation regime and the in-room air mixing.

Electret media or "charged" media are electrostatically charged materials that attract, like magnets do, microscopic charged or uncharged particulates. Those media are not the same in structure, stability, distribution of charge and size of their internal electric fields. Charge and structure together determine an electret media performance. In this paper the results of different filter media put to the tests are presented.

In this paper the author relates his experiment : while interviewing unhappy building occupants he realized that it was necessary to step back from the specific complaints and begin with the basics of proper ventilation, moisture control, temperature control before embarking on costly scientific investigations to solve the problem.

This paper presents the advantages and drawbacks of natural ventilation. . The author points out that a natural ventilation would be satisfying, mainly for buildings in mild climates, in taking account the type and quantity of sources in the occupied spaces.