Solid State Science and Technology, Vol. 17, No 1 (2009) 44-49

ISSN 0128-7389

THERMAL DIFFUSIVITY DETERMINATION OF LIQUID TROUGH THERMAL DIFFUSION LENGTH MEASUREMENT

M. Noroozi, B.Z. Azmi, Z.A. Wahab, M.M. Moksin and M.H. Mamat

Department of Physics, Faculty of Science, Universiti Putra Malaysia,

43400 UPM Serdang, Selangor.

 

ABSTRACT

A new Optical Fiber Thermal Wave Resonance Cavity (OF-TWRC) technique was used to determine thermal diffusivity of liquids from the thermal diffusion length obtained from the curve of pyroelectric amplitude exponential decay with respect to cavity length and compared with the linear fitting of pyroelectric phase signal. The average thermal diffusivity of water obtained by this calculated method gives the value for water as 1.4723210cms−. The thermal parameters for water and for other liquids agree with reported values in the literature.

 

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