This paper focuses on the possible association between classroom ventilation rates and the students' academic performance. A pilot study was conducted. The total number of observations with complete data included fifth grade classrooms in 54 elementary schools. The results of this preliminary study are presented.

That study demonstrated that factors in school environment such as high temperature, low air exchange rate and ambient air pollution from traffic exhausts are responsible for respiratory symptoms among pupils. Some solutions are suggested to improve that situation.

In this paper, the authors have investigated the determinants of IAP in Bangladesh, using monitoring data from 236 households in the region of Dhaka. Their results show that fuel choice affects indoor pollution levels significantly. A national "clean household" promotion program combined with an effective public education on the associated health benefits would reduce IAP exposure to safer levels for the very poor families.

The aim of that study was to compare self reported asthma, asthmatic symptoms and pollen or pet allergies among pupils in the Chinese and Swedish schools with similar data . The allergens levels in settled and airborne dust were compared too, with very different ventilation and heating systems, different outdoor air pollution and different pet keeping. The results presented demonstrate large differences between respiratory symptoms and reports on asthma.

Test standards for particulate and gaseous contaminant air filters in general ventilation systems are discussed in that paper along with filter rating systems for particulate filters as they are to be understood by filter specifiers too.

OA supply rates are often poorly controlled, but accurate measurements of OA flow rates are necessary. This paper describes results of tests of three technologies that perform well and advises on how those technologies should be applied. Conclusions are presented.

This paper provides an overview of mixed-mode buildings, and some of the research that is investigating their performance is described. Case studies are presented along with control strategies, analysis methods energy monitoring and collaborative design process.

For that study, the software package TRNSYS (transient systems simulation program) has been applied to estimate the energy consumption of a typical operating theatre in a tropical climate (Malaysia). For the simulation, typical meteorological year (TMY) data for the Kuala Lumpur area (Malaysia), and an operating theatre located in the University of Malaya Medical Centre (UMMC)(Kuala Lumpur), are used. Simulations and results are presented.The current HVAC system could be improved with heat pipe heat exchangers (HPHXs).

This paper describes first the specific challenges associated with adapting performing arts buildings for natural ventilation. The interventions in three such buildings are reviewed, the aim was to reduce their dependance on mechanical system, and to improve their thermal comfort. The ventilation and control strategies devised are reported along with the difficulties encountered during the design developement and the final performance.

A review of previous studies and reports on laboratory and field studies developed in the aim of assessing the performance of ventilation systems in spaces where smoking is allowed, is presented in this paper.The problems associated with those studies conducted in that type of buildings are discussed. The effectiveness of the ventilation systems is nevertherless clearly demonstrated.