English

First laboratory experiments are presented, the aim is to examine the transient filling of a room of buoyant fluid when a doorway connects the room to a large reservoir of dense fluid. A model of the transient exchange flow is then presented, it is in accordance with the experimental results.
A layer of air, warmer than the exterior must be maintained above a cold layer near the floor to prevent the heat supplied to the room to be lost through the doorway.

For that study a mass balanced model is applied to determine area-specific emissions rates in office buildings. Sources of VOCs were identified, put into 3 broad categories and quantified : building materials (23.7 %), ventilation systems (39.0 %) and occupants and their activities (37.3 %) .

This paper sums up the results of a study on the internal partitioning with its effects on the room air quality along with the ventilation performance. Physical tests and numerical modeling for a CFD simulation were used to evaluate different test conditions that employed mixing ventilation from the ceiling.

In Hong Kong, design and construction of new operating rooms and upgrading of older ones have been based on the UK Health Building Notes. In a case study, field measurements showed that the airflow and some design features did not tally with the specifed requirements.
As the risk of contamination in an operating room can be minimized through appropriate filtration and air distribution scheme, a CFD analysis was carried out with the simulation of the temperature distribution, airflow pattern and the contaminant dispersion.

The international center for indoor environment and energy, at the Technical University of Denmark has at its disposal 3 old and 9 new spaces for studying indoor environments and their incidence on human comfort, health, productivity at moderate energy demands. This paper describes those climate chambers, new laboratory and offices used for field experiments.

In that study, induced ventilation is experimentally explored in a small well-insulated manufactured home, located in the northern edge of the Negev desert in Israel. Temperature monitoring was performed inside and outside the building in summer along with velocity measurements inside the building. The results show that with induced ventilation the air temperature inside the home is like the ambient temperature, whereas, when no openings, the temperature inside the manufactured home is higher than the ambient.

It is not easy to provide simultaneously thermal comfort, proper air quality, efficient energy consumption to building occupants. In this paper an alternative methodology of real-time determination of optimal indoor air condition for HVAC system to achieve those 3 requirements is presented. A 24 hours operating HVAC system of a single-story building was chosen as a case study.The experiment results obtained with the proposed methodology were better than those from a conventional approach.

The use of a combined methodology of wind tunnel experiments and CFD simulations in order to study the potential of using active stack to enhance natural ventilation in residential apartments in Singapore is demonstrated in this paper. Comparison between the results obtained from the experiments and those from the simulations has been made.

This paper presents an extensive field survey conducted in residential naturally ventilated buildings in Indonesia. The data gathered has been analyzed and revealed that the Predicted Mean Vote equation predicted a warmer thermal perception compared to what people really felt. Under hot and humid tropical climate, people in free-running buildings had a preference for cooler environment and for higher wind speed.

For that study, 12 office rooms of a "Solar Optimised Building" in Germany have been monitored. The data have been evaluated by a new method for analysis that deals with short and long term measurements and with building simulation. A comparison between monitored data and simulation of a building with passive cooling by night ventilation is made on a long period.