Title

Dispersion Of A Dense Gas In A Closed Space

Abstract

Gaining a better understanding of the movement of dense gases within indoor spaces may be highly important to homeland security issues. This paper reports experimental results of the transport and dispersion of a dense gas in a closed space. A rectangular box (approximate dimensions of 1 ft × 3.7 ft × 6 ft) was constructed, and pure carbon dioxide (CO 2) was injected continuously into the chamber. The CO 2 entered via one of two holes drilled into one end face of the box, and gases exited through one of two ports on the opposite face. Nine holes were drilled in the front face to accommodate placing the IAQ monitors at various positions. Experiments were performed with different combinations of inlet and exit port locations open, and the carbon dioxide concentrations at different locations inside the chamber were measured with two IAQ monitors minute by minute. The experiments were repeated until CO 2 concentration data were available for all nine sampling ports for each combination of inlet and outlet ports. The data show how the concentration of carbon dioxide varied with time and location under these conditions. It was determined that the plume of CO 2 tended to sink down and move away from the point of injection, while gradually diffusing upwards. It was concluded that the transport of carbon dioxide in the box was driven mainly by the density gradient and to a lesser extent by diffusivity.

Publication Date

12-1-2004

Publication Title

Proceedings of the Air and Waste Management Association's Annual Meeting and Exhibition

Number of Pages

995-1012

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

18944404960 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/18944404960

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