The main aim of the SOLANOVA project was to transfer the know-how of ultra low energy and passive houses to a sustainable retrofit of the huge stock of obsolete panel buildings in Eastern Europe. There were big controversies about the ventilation system to be adopted, the chosen soltin and justification are presented in this paper along with the first results.

A Task Ambient Conditioning (TAC) system has been adopted in a low-storey building of 20,000 m2 floor area in Tokyo suburb. That system, in conjunction with other design techniques such as double-skin glass and structural thermal storage system proved efficient to achieve comfortable personal work-environment with a reduced HVAC load.

Large spaces often have different usage requirements in the different parts of the room, and the ventilation system is rarely suited to obtain separate conditions in those spaces. In this paper various ways to obtain a virtual separation are discussed. Some promising results are obtained with CFD.

In that study sampling methods for airborne endotoxin are compared in order to find a standard method . The feasibility of liquid impingers and MOUDI (micro-orifice uniform deposit impactor) for airborne endotoxin collection was demontrated , then these methods were compared to the filter cassette sampling method and finally the performance of these sampling methods in variable realistic conditions was validated.

Ozone has direct, and adverse effects on human health. It can initiate reactions that may produce irritating products.The authors present the results of their study on the influence of the reactions ozone-limonene on the perceived air quality (PAQ) . Six different realistic concentrations of ozone and limonene, separately or together were tested in four identical and adjacent offices.

This study developed a CFD technique to investigate indoor airflow patterns combined with PM1, PM2.5, PM10 removal ability in ventilated multi-room buildings.The simulated results showed that coarse particles were easier to be removed out of the building than the fine ones and that indoor partitions increased particles deposition and decreased particle escape.

Finding an effective ventilation system that can contribute to minimizing the airborne transmission of infectious diseases in hospital wards at relatively lower cost was the aim of that study. The authors investigated the penetration of exhalation jets from a lying person and the distribution of exhaled droplet nuclei in a ward with three different ventilation systems (mixing, downward and displacement ventilation).

That study has demonstrated that sensory evaluation is an effective tool for evaluating the impact of sorption on the acceptability of indoor air. For the experiments, samples of carpet and linoleum were used as pollution sources, and samples of painted gypsum board and Semai were used as "sorbents".The sensory panel was composed of different numbers of recruited students .To evaluate the impact of sorption on perceived air quality, the converted results were used in a simple mass balance model .

The feasibility of achieving ultra low respirable suspended particulates (RSP) in commercial offices without major modification of existing ventilation systems by enhancing the particulates removal effiiency of existing central ventilation systems was investigated . For that study , four types of filter were tested in a commercial building located the North shore of Hong Kong Island. The field observations show that indoor RSP can be lowered satisfactorily by the simultaneous filtration of outdoor air and return air.

This study explores the role and significance of the physical and psychosocial work environment in explaining Sick Building Syndrome. In that aim cross sectional data on the physical environment of selected buildings were added to individual data from the Whitehall II study - an ongoing health survey of office based civil servants ( 4052 persons, aged 42-62 , working in 44 different buildings in and around London, participated ).