In this paper, the authors have studied the oxidation processes on air filter surfaces initiated by ozone. Ozone concentrations were monitored upstream and downstream of used and new filter samples using a small-scale test rig at two different airflows.Test results have shown that the removal of ozone by a loaded filter decreases over time then gets steady. Though necessary, the filtration of ozone creates oxidation processes that are responsible for the generation of products that affect the perceived air quality mainly after periods when the ventilation system is not in operation.

This paper presents the results of an analysis of available scientific findings on how ventilation rate affects work performance. Almost all studies found an increase in performance with higher ventilation rates. The aim was to develop the best possible quantitative relationship between ventilation rate and work performance for use in cost benefit calculations related to building design and operation.

A technique used for the analysis of the contaminant transport in the wake of a bluff body is tested under controlled experimental conditions for application to aerosol transport in a complex furnished room. The authors ' hypothesis is that the dispersion of contaminants in a room is related to the turbulence kinetic energy and length scale. Their approach has been tested both in laboratory and with CFD simulations. Results and conclusions are presented.

In this paper the relationship between air-conditioning energy consumption and the proportion of non-satisfied people in commercial buildings located in Changsha (Hunan Province) is analyzed. Concerning the residentail buildings, the energy consumption and its main influencing factors are discussed too.
The authors think necessary a huge mobilization for everybody takes part into energy saving work.

This paper gives a summary of a detailed CFD (Computational Fluid Dynamics) of the flow around a a Computer Simulated Person (CSP) for the purpose of its validation.

Based on the advanced BIN-method, the annual energy use and the influence factors in an office building in NANJING are analyzed and presented in this paper.Under the climatic condition encountered in NANJING area, energy consumption of air-conditioning is the main energy use in office buildings.The general factors affecting the energy consumption of buildings include the inside design temperature, enclosure structure, people density, light condition, fresh air volume, the ratio of window to wall and shading coefficient.

This paper gives as a posthumous tribute to Walter Dittes, a summary of his thesis prepared at the University of Stuttgart (Germany) .It describes the various air diffusion patterns that can be used (mixing ventilation, displacement ventilation or use of both in different zones), and explains how thermal plumes are treated according to the chosen pattern.A zone model is then described for the prediction of air flows and pollutants transfers between zones within the indoor space.

This paper presents the requirements of the new European standard EN 13779 (2005) that replaced the German standard DIN 1946 Part 2 (1994). It has to be used in combination with the German recommendation VDI 6022 Blatt 1 for the design of ventilation systems fulfilling the requirements regarding indoor air quality.

Interdisciplinary research was based on simultaneous measurement of thermal environment and air quality, along with the survey of employees during their normal working activity. Statistical software and appropriate statistical methods were used to analyze the results of the questionnaire and to determine possible links with the indoor environment parameters.The results show the importance of psychological factors in subjective evaluations of the thermalenvironment.

The purpose of the present investigation was to study the indoor climate and the psychosocial work environment in different office environments.A cross-sectional questionnaire survey was performed in 11 naturally and 11 mechanically ventilated office buildings. Both buildings with cellular, multi-person and open-plan offices were studied.