The tests were made in a empty experimental surgical room for pre clinical animal research. The measurements were made with 3 filters efficiency : 65 %, 85 % and HEPA filter, according to ASHRAE conditions. The particle samples were taken at the upstream of the air conditioning system and on the operating table. Data collection were done the same day. The results show that the particle concentration is dominated by the smaller particles, so the use of high efficiency filtration is the best alternative.

Activated carbon filters have been installed within the air handling unit of an HVAC system feeding 100% fresh air to an office building. The filters efficiency against ozone (O3) and nitrogen oxides (NO2 and NO) as function of time and outdoor air parameters (temperature, relative humidity) has been measured continuously over a one-year period. The results show that the filters efficiency is high (generally between 70 to 90 %) and varies along time with temperature and relative humidity of air.

The purpose of this study was to investigate the sensory emission load from an alternative ventiltion bag filter with activated charcoal lining and to compare it with a used bag filter. The two types of filter have been used during three months in the same building, under the same conditions. Samples have been sent to a controlled laboratory environmentfor chemical measurements. The results confirmed that the sensory pollution load of the alternative filter is significantly lower than the commonly used ventilation bag filter.

This study experienced the capability of soil to purify indoor air pollutants. The efficiency of reducing the concentration of VOCs was examined for the soil where plants could be buried. Experiments were performed. The study was performed under limited specific experimental settings. The results indicate that IAQ could be improved by soil material, since the concentration of VOCs was lowered.

The effect of filtration on secondary organic aerosols (SOA) resulting from reactions between indoor limonene and ozone under a recirculation scenario, is examined in that paper. Three filter experiments were studied : new filter, used one and absence of filters in the air handling unit. Experimental procedure, results and conclusion are presented.

The chemical nature of the odorous compounds released from used ventilation filters has been investigated in that paper by simultaneous ordor evaluation and chemical analysis of air before and after the filters. The results are in adequation with the earliest authors' ones suggesting that aldehydes contribute to odor formation in ventilation filter.

This paper is a literature review of Indoor Air Quality provided by air conditioning systems with underfloor air distribution. Practically all the studies indicate UFAD systems really promote an improvement of IAQ. Despite this positive result, more detailed studies must be carried out to fill the lack of informationt about impact of new building materials, equipments and technologies on their occupants' health.

Identifying optimal conditions for both human health and work productivity in office rooms was the aim of this study based on published reports and other information concerning air-flow and temperature in Swedish office buildings.

This report discusses the importance of airflow passing from a house into its pitch roof carrying heat and moisture. . For the prediction of the indoor airflow patterns, detailed tracer gas measurements and simulation tools (CFD) have been used. Methodology ,measurements and modeling are presented along with the results.

A method to develop HVAC equipment models with BMS data using RNN - recurrent neural networks - is proposed in this paper. The aim of the study is to define a non ad hoc technique in modeling, to acquire the possibility to tune equipement models automatically with computer in online as a result.