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.

Few controllers have been tested on physical terms, their investigation has been limited to proposals and simulations. The construction and modeling of an experimental system for testing advanced HVAC controllers, is the aim of that paper. A simple integrated environment is created for data aquisition, controller design, simulation and closed loop controller implementation and testing. That environment is adequate for rapid prototyping of various controllers and control design methodologies.

This paper describes the attributes of simple and advanced naturally ventilated (ANV) buildings. Environmental design considerations in general and ventilation considerations in particular shape the architecture of ANV buildings. Three large educational buildings have been designed , two in UK, one near Chicago (USA), they represent successive evolutionary stages, from ANV to ANV with passive downdraught cooling, and finally ANV with HVAC support.

This paper deals with the monitoring and simulated thermal behavior of a passive solar school at the Northwest of La Pampa province in Argentina . The results of social-environmental surveys are presented. The monitoring has been carried out under normal conditions of use (heaters working because of students attendance) and during an unoccupied period during winter holidays. 90 % of heating energy savings are registered , compared to conventional schools.