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.

This paper aims at estimating the thermal comfort in environment created by a proposed passive evaporating cooling system. The evaporative effect from water falling along guides is used to produce a reduction in the temperature of the air entering the building.

This paper deals with the results of a large-scale survey performed to develop new notions about ACT (adaptive comfort temperature) in buildings in humid sub-tropical Hong-Kong ; the aim was to determine the adaptive interface relationship between indoor comfort temperature and outdoor air temperature in order to preset the indoor air temperature as a function of the oudoor air temperature.

Due to its simplicity in installation and maintenance on the one hand, and to its potential to conserve energy on the other hand, the refrigerant modulating air-conditioning system has become very popular. This paper presents the results of an IAQ energy audit of two buildings in Singapore that use that kind of system. The results are compared to those obtained from conventional air-conditioning systems.

Many indoor models have been developed to describe thermal indoor discomfort, but are they relevant to outdoor or semi-outdoor environments ? They have not been yet critically validated . So, the thermal comfort of more than one thousand subjects living in outdoor and semi-outdoor locations in subtropical Sydney has been investigated by a questionnaire on the one hand and measured with micro-meteorological instruments.

This paper describes a numerical model that takes into account the indoor air moisture and its transport by the airflow, within an enclosure. That model is a potential useful tool for correctly estimating the indoor environment in steady and homogeneous thermal conditions.

The nesting of a new zonal model within a multizone model has allowed an increased resolution in the prediction of local air flow velocities, temperature and concentration distributions between rooms and within rooms.

The objective of the European project AIRLESS was to develop strategies, principles and protocols to improve and control the performance of HVAC systems and their components to be incorporated in codes and guidelines.This paper is a sum-up fo the first-phase of the AIRLESS project : definition of air pollution caused by HVAC systems, investigation to prevent this pollution and definition of strategies to keep away that pollution.

This paper describes a new tool, ils architecture and its predictive performance. BACH is a computational tool for air flow simulation in and around buildings in the early stages of the design process.