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Hydrogen Detection: Visualisation of Hydrogen Using Non Invasive Optical Schlieren Technique BOS

Type of Publication
Year of Publication
2005
Authors
A. Kebler; W. Ehrhardt; G. Langer
Abstract

The detection of hydrogen after its accidental release is not only important for research purposes but will be much more important under safety aspects for future applications when hydrogen should be a standard energy resource. At Fraunhofer ICT two principally different approaches were made: first the new optical background-oriented schlieren method (BOS) is used for the visualization of hydrogen distribution and mixing processes at a rate of up to 1000 frames per second. The results from experiments with small scale injection of hydrogen/air?mixtures into air flows and free jets of hydrogen and hydrogen/air?mixtures emerging from 1? hoses simulating exhaust pipes will be discussed and interpreted with support from selected high speed videos. Finally mixing zones and safety distances can be determined by this powerful method.

Pagination
6:00 PM
Keywords
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