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Experimental characterization of the removal efficiency and energy effectiveness of central air cleaners

Energy and Built Environment 2021年第1期2卷 1-12页

作者： Patrice Blondeau Marc Olivier Abadie Alexandra Durand Pascal Kaluzny Sylvie Parat Alain Ginestet dominique Pugnet Céline Tourreilles Thierry Duforestel LaSIE/La Rochelle University UMR CNRS 7356Avenue Michel Crépeau17042 La Rochelle cedex 1France Tera Environnement 628 rue Charles de Gaulle38920 CrollesFrance Air&Bio 13 rue Jules Ferry73000 ChambéryFrance CETIAT 25 avenue des artsBP 5204269603 VilleurbanneFrance EDF R&D Avenue des Renardières77818 Moret-sur-Loing cedexFrance.

This study assessed six commercially available in-duct air cleaning devices which are designed to be mounted in the central ventilation system of offices or commercial *** selected devices use different air cleaning technologies:mechanical filtration,electrostatic precipitation,gas filtration,ionization/cold plasma,photocatalytic oxidation(PCO)and catalysis under UV *** were tested against particles,a mixture of volatile organic compounds containing acetone,acetaldehyde,toluene,heptane and formaldehyde,and two bio-contaminants:Aspergillus brasiliensis(fungus)and Staphylococcus epidermidis(bacteria).Two different test rigs were *** single pass efficiency of each device was determined for three airflow rates,corresponding to face velocities ranging from 0.9 to 2.7 m/s,and two sets of temperature and humidity that are representative of indoor air conditions in wintertime and *** concentration of the chal-lenge volatile organic compounds was also varied in the 30 to 100μg/m^(3)range as a way to characterize their influence on efficiency at realistic concentration levels for non-industrial *** of ozone and formaldehyde concentration downstream of the air cleaners were carried out to determine the emission rate of by-products into the air ***,the energy issue was addressed by measuring the electric power drawn and pressure loss of the *** results showed that two devices,namely a radiant catalytic ionizer and a plasma ionizer,had a very low single pass efficiency against all the challenge *** association of the plasma ionizer and the electrostatic precipitator did not produce a synergetic effect between the two technologies either,contrary to what their manufacturer ***,three of the six devices tested were effective in terms of pollutant removal,but only two had an acceptable energy effectiveness in view of their use in low or zero energy *** energy effectiveness ranged

关键词： Central air cleaners Efficiency Clean air delivery rate Energy effectiveness By-products Ozone

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