For that paper, a full-scale ventilated roof component was tested under real climatic conditions.two key constructional parameters were examined during the tests : the air gap height and the application or not of a layer of a radiant barrier. The performance of the component was assessed by direct comparison to a simultaneously operating conventionally constructed roof. The experimental results are presented.

The potential use of natural ventilation as a passive cooling system in new building designs in a Turkish midsize city, Kayseri, was investigated by CFD, using the Fluent 6.2. program..The simulation results are presented, they suggest that natural ventilation can be used to provide a thermally comfortable indoor environment during the summer season in that area.

For the investigation of the velocity and temperature fields in a mechanically ventilated enclosure, a full-scale experimental and CFD methods are used. The detailed airflow characteristics have been measured in three cases of ventilation air temperature : an isothermal case, a hot case and a cold case. Two CFD models have been validated a RANS modelling and a LES modelling. The first one provides results in better agreement with experimental data except for the cold case, whereas the second one underestimates the expansion of the jet in the three cases.

Optimizing the building energy efficiency in tropical climates by reducing the period of air-conditioning thanks to natural ventilation and a better bioclimatic design is the aim of that paper. A new modelling approach is proposed. In order to compare the performance of ventilation function of the opening distribution, twelve living spaces with different configuration of openings have been studied. The results and discussion are presented.

In this paper, for the calculation of the convection flow, the influence of the cooking process is taken into account, the actual measured plume characteristics of typical kitchen appliances are presented during cooking mode. The measurements that have been conducted show that the generic plume equation gives a suitable platform for practical applications during the cooking mode too.

In this paper, the effect of inclination of absorber on the airflow rate has been investigated in a solar induced ventilation system using roof solar chimney (RSC) concept. According to the results of the developed solution of the authors, it appears that the optimum absorber inclination depends upon the latitude of place, it varies from 40 to 60. The experimental investigations tally with the theoretical results

For that study, 2-ethyl-1-hexanol concentrations have been measured inside and outside 99 rooms of 42 non-domestic buildings in Nagoya, with no significant correlation. The mechanical ventilation has been found effective in the temporary reduction of indoor 2-ethyl-1-hexanol levels.

For that study, a comparison of the energy use of a floor-supply displacement ventilation system in a large industrial workshop with that of a mixing ventilation system is made for five US climate regions. The energy use and the system performance varied with the locations. The displacement ventilation system can save energy in cooling mode, but has a lower capacity of dehumidification, so it is not recommended for use in humid regions.

This paper proposes a multil-input multi-output (MIMO) controller that control temperature and ventilation for multiple zones in a building with a model predictive control strategy (MPC). That controller meets the ventilation requirements of the ventilation rate procedure of Ashrae standard 62.1. Its performance are evaluated thanks to simulation-based experiments under four types of typical weather conditions. The results are satisfactory.

For that study a model on the thermal storage of the indoor goods was set up, then based on the thermal balance of the whole room, the temperature change model was founded. The coupled operation process of night ventilation and active cooling was simulated for a typical supermarket building in cold climate. The results show that the coupled operation leads to shorter operation time of active cooling and can save energy.