DBPapers
DOI: 10.5593/SGEM2015/B32/S15.083

EXPERIMENTAL DETERMINATION OF BREATHING VOLUME FLOW RATE IN SIMULATED SUB-SEA ENVIRONMENT

A. Constantin, T. Stanciu
Thursday 24 September 2015 by Libadmin2015

References: 15th International Multidisciplinary Scientific GeoConference SGEM 2015, www.sgem.org, SGEM2015 Conference Proceedings, ISBN 978-619-7105-37-7 / ISSN 1314-2704, June 18-24, 2015, Book3 Vol. 2, 627-634 pp

ABSTRACT
The breathing air flow rate of a SCUBA diver at different depths of sub-sea immersion-an important parameter for his safety and comfort-was evaluated in simulated diving. Whether the out flow rate can be directly measured, the inflow rate may be calculated according to the exhaled air parameters. In the case of air breathing, nitrogen diffusion in the human body leads to an accumulation of this gas according to the time of exposure at a specific depth of immersion.
The paper presents an experimental method to determine the inhaled breathing air flow rate during simulated diving in a hyperbaric laboratory based on the evaluation of accumulated volume of nitrogen in the human body. The results referring to the inflow rate are needed in a further study on the human underwater breathing protection.

Keywords: air flow rate, simulated dive, gas diffusion