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.

This study is part of an ongoing investigation concerning an innovative technology for whole house ventilation. An experimental whole house low energy ventilation system has been installed in dwellings located in Denmark and Poland for tests and control. A CFD analysis and a simulation were made too. The results have been compared , the low values suggested by simulations and achieved by "air supply' windows have been confirmed by the monitored results.

That paper shows how a top-down precooled natural ventilation can be an effective and energy efficient technique for providing thermal and ventilation comfort in a wide range of modern buildings during high summer or in warm climates, when used properly.For that study, the top-down precooled natural ventilation of an occupied open-plan space is equipped with a high-level vent and a low-level vent . A chiller unit is connected to the high-level vent to provide precooling. A quantitative model has been developed and tested with analogue laboratory experiments. The results are presented.

In the airtightness testing industry, the upper limit for large buildings to be tested was 5000 m2. The feasibility of testing very large buildings, over 5000 m2, with a steady state fan technique has been questioned and the authors of that paper have tested and proved the technical feasibility of this equipment. The development, calibration and application of a 2 m diameter fan pressurissation system is demonstrated in this paper.