French permanent survey on indoor air quality. Part 1 : Measurement protocols and quality control

For that national survey 567 French dwellings from 2003 to 2005 were investigated for IAQ measurements. The enormous collected data was associated to quality control system that operated before, during and after each measurement.

Evaluation of natural ventilation performance in two child-care centres in Denmark

This paper reports the findings of a pilot field study in two naturally ventilated child-care centres. Air temperatures, air velocities, turbulence intensity and air change rates were measured. The method and the results are presented

VOCs in indoor air in several schools of Porto

That study aims at characterizing the indoor air quality, mainly in terms of VOCs in nine schools of a littoral urban area in Portugal. Measurements and results are presented.

Analysis of technologies for improving indoor air quality during sustainable redevelopment of Polish schools

A general analysis of technologies aiming at improving indoor air quality in Polish schools is described in this paper. A case study shool was selected for the comparison of selected technologies for ventilation system.

Integral design workshop for sustainable comfort systems to improve ventilation concepts

In this paper the results of the "Integral Design Methodologyy" workshop for sustainable comfort systems are presented. The objective was to reduce failure costs and to improve design quality for ventilation concepts.

The development of a raised-floor Ondol with a ventilation system

In Korea, "Ondol" a radiant heating system is widely used but it is not satisfying with ventilation, so this study aims at developing a ventilation system to improve thermal environment and ventilation rates.

Thermal environment and moisture production in the bathroom

How the use of ventilation equipment influences humidity and the thermal environment in a bathroom is the aim of this paper. Experiments and analysis show that a difference in ventilation quantity may influence the amount of moisture production.

Comfort ventilation in new building standards

In order to tally with the demanding requirements placed on compact ventilated units (CVUs), a testing facility has been developed. It is described in this paper.

An integrated zonal model to predict transient indoor humidity distribution

This paper investigates the ability of intermediate models such as zonal models to predict environmental conditions in a room. The first part compares experimental data to zonal andconventional k-e computational fluid dynamics model predictions in a mixed-ventilation room. Then, in order to investigate the impact of building material moisture adsorption and desorption processes on indoor air humidity and predict humidity distribution in a room, a zonal model was integratedwith a building material moisture transfer model, based on the conservation of energy and dry air and water vapor mass.

A new generation of zonal models

This paper presents the discrepancies in applying the power-law model (PLM) for predicting indoor airflow distribution and the methodologies employed to improve this model.First, investigation was made to find an appropriate K value (flow coefficient) for use within the PLM (using the same K value for each cell). Values other than 0.83 were considered, and the result revealed that values other than K = 0.83 could not affect the prediction of the PLM and that K can be given any value, such as 1.0.

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