English

The paper deals with a nation wide field study in dwellings in order to assess household exposure to indoor air pollutants and related risk factors. It has been launched by the Observatory on Indoor Air Quality (OIAQ) . About 700 dwellings were randomly selected for investigation on the main indoor air pollutants.
An information system for indoor air quality field studies, designed for surveyors, laboratories, and project coordinators, has been developed by the CSTB in order to manage the 10 millions records of the whole campaign.

Ventilation airflow rate of the occupied houses in the northern region of Japan is the subject of that study. The investigation consisted in the measurement of the ventilation rate using three different methods : the constant concentration method, airflow measurement at inlet/outlet and PFT method.
This paper presents the results of the constant concentration method, obtained with a B&K 1302 multi gas monitor and two B&K 1303 multipoint samplers and dosers., An example for the improvement of the ventilation by increasing the ventilation rate is also presented.

Ventilation airflow rate of the occupied houses in the northern region of Japan is the subject of that study. The investigation consisted in the measurement of the ventilation rate using three different methods : the constant concentration method, airflow measurement at inlet/outlet and PFT method.
The results are presented

The results of field studies in which the occupants of eight academic and office buildings, located in New Zealand, Australia, Germany, and Singapore are presented in this paper. The occupants were surveyed about their perceptions of the quality of the air in their premises, using the Probe-type questionnaire.
This paper outlines the occupantsperceptions of a range of air quality issues, as well as their overall comfort, health, and productivity. The results are presented.

This article deals with the perception of locally applied airflow from personalized ventilation air terminal devices by tropically acclimatized people. During the experiments, 24 subjects (male and female) were exposed to local airflow from the front and towards the face at six air velocities (from 0.3 up to 0.9 m/s), their perception of air movement is similar to that of other humans. Those velocity ranges are relevant for design of personalized ventilation in practice.

Two prototypes of air terminal devices (ATD) for personalized ventilation have been developed for that study : the Circular Perforated Panel (CPP) and the Desktop-mounted Grille (DMG) . They have been tested and their performance with regard to inhaled air quality and cooling effect was compared.

An aircraft seat has been designed and constructed with displacement ventilation in the headrest. Tracer gas experiments revealed contaminant removal efficiencies up to 96% in the breathing zone. Local supply of air near the breathing zone of the passengers minimizes the amount of air, enables some humidification and could give some protection against infectious diseases.
The results of measurements are presented in this paper.

A field experiment was conducted in two classes of 10-year-old children. Average air temperatures were reduced from by 3 degrees and outdoor air supply rates were increased , each condition lasting a week. 8 different aspects of school tasks were performed during appropriate lessons . Besides the children indicated SBS symptom intensity. This experiment indicates that the improvement of classroom conditions can substantially improve the performance of schoolwork.

Airflow fluctuation is an important factor that affects indoor thermal environment and human thermal response. In this paper, the influence of three kinds of airflows : constant airflow, imitating natural airflow and sinusoidal airflow, on thermal comfort is studied.

The aim of that study is to explore the influence of vertical air temperature gradient and room air temperature (at 0.6 m height) on overall and local thermal comfort of 30 tropically acclimatized subjects in a room served by Displacement Ventilation (DV) system.