Treatment of household product emissions in indoor air: Real scale assessment of the removal processes

Indoor Air quality (IAQ) in private or public environments is progressively recognized as a critical issue for human health. For that purpose the poor IAQ needs to be mitigated and immediate drastic measures must be taken. In environmental science and especially in advanced oxidation processes and technologies (AOPs-AOTs), photocatalysis has gained considerable interest among scientists as a tool for IAQ improvement. In the current study an innovative paint material was developed which exhibits intense photocatalytic activity under direct and diffused visible light for the degradation of air pollutants, suitable for indoor use. A laboratory and a real scale study were performed using the above innovative photo-paint. The lab test was performed in a special design photo-reactor while the real scale in a military’s medical building. Nitrogen Oxide (NO) and Toluene concentration was monitored between “reference” rooms (without photo paint) and “green” rooms (with photo-paint) in order to estimate the photocatalytic efficiency of the photo-paint to degrade the above pollutants. Results of the study showed a decrease up to 60% and 16% for NO and toluene respectively under lab scale tests while an improvement of air quality up to 19% and 5% under real world conditions was achieved.

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From the Field to the Lab: Real Scale Assessment of Stresses in Welded Components

Materials Performance and Characterization ◽

10.1520/mpc20170103 ◽

2018 ◽

Vol 7 (4) ◽

pp. 20170103 ◽

Cited By ~ 1

Author(s):

Arne Kromm ◽

Thomas Lausch ◽

Dirk Schröpfer ◽

Jonny Dixneit ◽

Andreas Hannemann ◽

...

Keyword(s):

Scale Assessment ◽

Real Scale

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Real scale experimental study for performance evaluation of unidirectional air diffuser perforated panels

E3S Web of Conferences ◽

10.1051/e3sconf/20183201014 ◽

2018 ◽

Vol 32 ◽

pp. 01014 ◽

Cited By ~ 2

Author(s):

Laurenţiu Tăcutu ◽

Ilinca Nastase ◽

Vlad Iordache ◽

Tiberiu Catalina ◽

Cristiana Verona Croitoru

Keyword(s):

Experimental Study ◽

Indoor Air ◽

Air Flow ◽

Air Distribution ◽

Related Factor ◽

Technological Evolution ◽

Technical Parameters ◽

Flow Pressure ◽

Laminar Air Flow ◽

Real Scale

Nowadays, there is an increasing emphasis on indoor air quality due to technological evolution and the fact that people spend most of the time in enclosed spaces. Also, energy efficiency is another related factor that gains more and more attention. Improving air distribution in an enclosure can lead to achieve these goals. This improvement can be done by adjustingthe air terminals position, theredimensions or the air diffuser perforations. The paper presents the study of 8 types of panels with different perforations shapes. The systems were characterized by flow, pressure loss and noise. Usualand special geometries were chosen, all having the same flowsurface. The perforated panels were mounted in a unidirectional air flow (UAF)diffuser, also called a laminar air flow (LAF)diffuser, that is placed in a real scale operating room (OR) in our laboratory.The purpose of this study is to determine whether changing the shape in the perforated panels can improve the technical parameters of the diffuser.

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