THE PHOTOACOUSTIC TECHNIQUE AS A CONVENIENT INSTRUMENT TO DETERMINE THERMAL DIFFUSIVITIES OF GASES

Authors
STEPHAN K BIERMANN J
Citation
K. Stephan et J. Biermann, THE PHOTOACOUSTIC TECHNIQUE AS A CONVENIENT INSTRUMENT TO DETERMINE THERMAL DIFFUSIVITIES OF GASES, International journal of heat and mass transfer, 35(3), 1992, pp. 605-612
Citations number
16
Journal title
International journal of heat and mass transfer → ACNP
ISSN journal
00179310
Volume
35
Issue
3
Year of publication
1992
Pages
605 - 612
Database
ISI
SICI code
0017-9310(1992)35:3<605:TPTAAC>2.0.ZU;2-Q
Abstract
The thermal diffusivity of gases can be determined with a method based upon the photoacoustic effect. The theoretical fundamentals of the ph otoacoustic technique for thermal diffusivity measurements are present ed and a photoacoustic cell designed for accurate measurements over th e temperature range from 290 up to 423 K at atmospheric pressure is de scribed. The average absolute deviation of the experimental data from recommended data, for gaseous argon, does not exceed 1%.