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.

This paper is the presentation of the development and application of an IAQ audit methodology applied in tertiary institutional buildings in the tropics. For that study, a staff room and a typical lecture theatre have been selected.The IAQ audit consisted in monitoring thermal comfort parameters. In parallel the staff and students have answered a questionnaire to give a subjective assessment of the indoor air quality.The IAQ results will be then used to develop an IAQ database for institutional buildings in Singapore.

This paper gives the description of a four-factor simulation design and a statistical procedure for analyzing material VOC time sensitivities with regard to the following parameter variations : VOC diffusion coefficient, VOC partition coefficient, material thickness, surface air velocity, along with their interaction effects.