You need JavaScript to view this

Optimization of the velocity of air providing dynamic containment at openings

Conference:

Abstract

The handling of toxic, radioactive or dangerous substances in industry of research laboratories necessitates the use of techniques for protecting the workers involved. The risks arise from these substances being airborne particles and from their transfer, essentially through turbulent diffusion. One way of limiting this risk is to employ the principle of dynamic containment, whereby a particular direction of air flow is imposed at inlets and outlets in order to prevent the back flow of the pollutant to areas where it may be breathed by the operators. The air velocity normally used to prevent back flow of pollutant is 0.5 m.s. The `Service d`Etudes et de Recherches en Aerocontamination et en Confinement` (SERAC) has begun an evaluation of the effect of a reduction in air inlet velocity on the risk of pollutant back diffusion. This should lead to energy savings through the use of a minimum air flow rate concomitant with appropriate protection. The paper gives the results obtained with openings of different geometries and shapes. It is also proposed a simulation of this phenomenon using a calculation code of air flow in a ventilated room (the TRIO code), so that the results may be compared with the experimental data.  More>>
Publication Date:
Dec 31, 1992
Product Type:
Conference
Report Number:
CEA-CONF-11525; CONF-920949-
Reference Number:
SCA: 420203; 420400; PA: AIX-25:003070; EDB-94:014339; ERA-19:004720; NTS-94:014145; SN: 93001120495
Resource Relation:
Conference: 3. international conference on air distribution in rooms: air movement in large spaces,Aalborg (Denmark),2-4 Sep 1992; Other Information: PBD: 1992
Subject:
42 ENGINEERING; AIR FLOW; CONTAINMENT SYSTEMS; COMPUTERIZED SIMULATION; POLLUTANTS; AEROSOLS; AIR CURTAINS; AIR INFILTRATION; BACKSCATTERING; FLOW RATE; GASES; GLOVEBOXES; OPENINGS; T CODES; TURBULENCE; VORTICES; 420203; 420400; HANDLING EQUIPMENT AND PROCEDURES; HEAT TRANSFER AND FLUID FLOW
OSTI ID:
10111353
Research Organizations:
CEA Centre d`Etudes de Fontenay-aux-Roses, 92 (France). Dept. de Protection de l`Environnement et des Installations
Country of Origin:
France
Language:
English
Other Identifying Numbers:
Other: ON: DE94609165; TRN: FR9303725003070
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
FRN
Size:
11 p.
Announcement Date:
Jun 30, 2005

Conference:

Citation Formats

Laborde, J C, Berne, P, and Dupoux, N. Optimization of the velocity of air providing dynamic containment at openings. France: N. p., 1992. Web.
Laborde, J C, Berne, P, & Dupoux, N. Optimization of the velocity of air providing dynamic containment at openings. France.
Laborde, J C, Berne, P, and Dupoux, N. 1992. "Optimization of the velocity of air providing dynamic containment at openings." France.
@misc{etde_10111353,
title = {Optimization of the velocity of air providing dynamic containment at openings}
author = {Laborde, J C, Berne, P, and Dupoux, N}
abstractNote = {The handling of toxic, radioactive or dangerous substances in industry of research laboratories necessitates the use of techniques for protecting the workers involved. The risks arise from these substances being airborne particles and from their transfer, essentially through turbulent diffusion. One way of limiting this risk is to employ the principle of dynamic containment, whereby a particular direction of air flow is imposed at inlets and outlets in order to prevent the back flow of the pollutant to areas where it may be breathed by the operators. The air velocity normally used to prevent back flow of pollutant is 0.5 m.s. The `Service d`Etudes et de Recherches en Aerocontamination et en Confinement` (SERAC) has begun an evaluation of the effect of a reduction in air inlet velocity on the risk of pollutant back diffusion. This should lead to energy savings through the use of a minimum air flow rate concomitant with appropriate protection. The paper gives the results obtained with openings of different geometries and shapes. It is also proposed a simulation of this phenomenon using a calculation code of air flow in a ventilated room (the TRIO code), so that the results may be compared with the experimental data. (author). 5 refs., 10 figs., 1 tab.}
place = {France}
year = {1992}
month = {Dec}
}