Photoacoustic Method for Measurement of Thermal Effusivity of Fe3O4 Nanofluid | Zendy

Vijay S. Raykar | Zendy; A. K. Singh | Zendy

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Photoacoustic Method for Measurement of Thermal Effusivity of Fe₃O₄ Nanofluid

Author(s) -

Vijay S. Raykar,

A. K. Singh

Publication year - 2011

Publication title -

journal of thermodynamics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.112

H-Index - 11

eISSN - 1687-9252

pISSN - 1687-9244

DOI - 10.1155/2011/464368

Subject(s) - thermal effusivity , nanofluid , materials science , ethylene glycol , thermal conductivity , photoacoustic imaging in biomedicine , nanoparticle , analytical chemistry (journal) , thermal , chemical engineering , composite material , thermodynamics , nanotechnology , chemistry , chromatography , optics , thermal contact conductance , thermal resistance , physics , engineering

Photoacoustic (PA) sensor was designed and developed to evaluate thermal effusivity of Fe3O4 nanofluid. The PA sensor is based on open cell mode (OPC) to measure acoustic signals from low concentration of nanoparticulate suspensions in ethylene glycol (EG). Spherical Fe3O4 nanoparticles (NPs) were obtained by chemical precipitation method in powder form. The obtained NPs were stabilized by acetylacetone (acac) in EG. Thermal conductivity estimation was carried out with the help of transient hot wire method. The developed PA sensor was calibrated by measuring thermal effusivity of standard samples. The acoustic signals of the PA experiments have been analyzed with a simple Rosencwaig-Gersho theoretical model

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