This paper presents a case study : under extremely hot and arid climate, the thermal perception of 36 students has been tested. For the calculations, energy balance models of Fanger and Gagge et al. were used. There was a discrepancy between the observed and calculated values during daytime under extremely hot conditions.

The new model of the COMIS program has been modified, it allows individual rooms to be divided into smaller zones. This new program has been evaluated and the results have been compared to those from other zonal and CFD models.

This paper analyses the cooling capacity and the possibilities of energy saving due to a correct natural ventilation.A correct exposure of the buildings to prevailing winds in a mediterranean area allows the reducing of cooling loads even in non-bioclimatic buildings, and without any cost. A correct natural ventilation offers great cooling capacity and possibilities of energy savings.

A graphic tool is presented in this paper. The daily swings of temperature can be represented on this graph, and this point can be compared with the comfort zones for different activity levels. The graph allows the representation of climatic variables, the definition of comfort zones, the selection of bioclimatic design resources.

This article describes a reliable tool for analysing and designing natural ventilation systems, based on fundamental flow equations : mass balance, energy conservation and momentum.

An investigation of the natural ventilation performance of an hawker center in Singapore is the subject of that study. Thermal comfort perceptions of the users of the center have been evaluated.The impact of four variations in the structure of the building on natural ventilation has also been explored (increasing size of passageway, openings in the roof, removal of end walls and increasing of the roof height)

The experimental investigation of airflow performance in a ceiling slot-ventilated enclosure under an isothermal condition was the aim of that study. Air-flow characteristics have been analyzed via experimental data then compared to literature theoretical expressions.
The results will be used in design guidelines of ventilation system for controlling indoor environment.

For the restoration of the historic fortress of Kufstein, the high humidity problems encountered have required special investigations : the capillary water up-take characteristics of the wall stones and identification of the ventilation deficiencies have been studied.
Results show that a controlled ventilation system may help to reduce the problems associated with humidity and condensation.

This paper presents a method to determine the amount of oil residues in HVAC components surfaces. That method has been validated. It appears that the oil concentration of studied HVAC components depends on the technique used for their manufacturing.

An integrated IAQ model has been developed for prediction of Volatile Organic Compounds emission rate of building material and concentration distribution within a material.Experimental data have validated the model predictions. The results of the experiment tallied with the model predictions.