An open-photoacoustic-cell method for thermal characterization of a two-layer system

Download
  1. (PDF, 486 KB)
  2. Get@NRC: An open-photoacoustic-cell method for thermal characterization of a two-layer system (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1063/1.3310319
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleJournal of Applied Physics
Volume107
Issue4
Pages043514-1043514-5
SubjectThermal conductivity; Photoacoustics; Two layer systems; Catalyst layers
AbstractIn the present work, we use an open-photoacoustic-cell (OPC) operating at high frequency to measure thermal properties of two-layer system samples. Photothermal deflection technique is also employed to measure the samples. The effective thermal diffusivity measured using the OPC method is interpreted using the concept of effective thermal resistance for a series two-layer system. The results show the reliability of the photoacoustic method for a complete thermal characterization of the samples. In addition, by varying the sample effective thickness, the thermal diffusivity and conductivity of each layer are precisely determined. The effective thermal diffusivity, thermal conductivity, and specific heat of a porous catalyst layer (thickness varying from 13 to 53 μm) deposited on an aluminum foil (53 μm in thickness) were thus measured and found to be (3.7+-0.3)x10−³ cm² / s, (7.5+-0.7)x10−³ W/cm K, and (1.6+-0.2) J /gK, respectively.
Publication date
LanguageEnglish
AffiliationNRC Institute for Fuel Cell Innovation; National Research Council Canada
Peer reviewedYes
NPARC number16869220
Export citationExport as RIS
Report a correctionReport a correction
Record identifier596cc457-7303-413f-95fb-4fccb57a9f2e
Record created2011-02-15
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)