Evaluation of the thermal diffusivity of vegetable oils during frying by Thermal Lens Spectrometry

2008 ◽  
Vol 153 (1) ◽  
pp. 531-534 ◽  
Author(s):  
S. M. Lima ◽  
E. S. Bannwart ◽  
R. G. Oliveira ◽  
L. H.C. Andrade ◽  
P. V. Del Ré ◽  
...  
Keyword(s):  
Thermal Diffusivity ◽  
Vegetable Oils ◽  
Thermal Lens ◽  
Thermal Lens Spectrometry

Thermal Diffusivity of Multi-Walled Carbon Nanotubes Dispersed in Oleic Acid

2012 ◽  
Vol 21 ◽  
pp. 125-130 ◽  
Author(s):  
Alex Junior de Freitas Cabral ◽  
Clascídia Aparecida Furtado ◽  
Cristiano Fantini ◽  
Petrus Alcantara Jr.
Keyword(s):  
Carbon Nanotubes ◽  
Oleic Acid ◽  
Thermal Diffusivity ◽  
Thermal Lens ◽  
Theoretical Expression ◽  
Thermal Lens Spectrometry ◽  
Multi Walled Carbon Nanotubes ◽  
Spectrometry Technique ◽  
Transient Thermal ◽  
Walled Carbon Nanotubes

Suspensions of oleic acid with carbon nanotubes were prepared. Using a thermal lens experimental setup, the thermal diffusivity of oleic acid in presence of multi-walled carbon nanoparticles with different concentrations was measured. The results show that, the thermal diffusivity increases with the increase of nanotubes concentration, enhancing the thermal diffusivity in the solution. Modification in the thermal diffusivity as function of quantity of carbon nanotubes was investigated, for a constant volume of oleic acid 10 mL. The diffusivities were obtained by using the thermal lens spectrometry technique. The characteristic time constant of the transient thermal lens was obtained by fitting the theoretical expression to the experimental data.

Synthesis of Electrospun Titania Nanofibers for Thermal Lens Study in Heat Transport Applications

2018 ◽  
Vol 936 ◽  
pp. 58-62
Author(s):  
José Alfredo Pescador-Rojas ◽  
José Luis Jiménez-Pérez ◽  
José Francisco Sánchez-Ramírez ◽  
Rubén Gutiérrez-Fuentes ◽  
Zormy Nacary Correa-Pacheco ◽  
...  
Keyword(s):  
Thermal Diffusivity ◽  
Thermal Lens ◽  
Fiber Diameter ◽  
Sol Gel ◽  
Average Diameter ◽  
Thermal Lens Spectrometry ◽  
X Ray ◽  
Complementary Techniques ◽  
Thermal Diffusivities ◽  
Titania Nanofibers

Thermal lens spectrometry (TLS) technique was used to obtain the thermal diffusivity of electrospun Titania nanofibers (TiO2), with average diameter size of 50-80 nm, in water. TiO2nanofibers have been successfully prepared by sol-gel and electrospining techniques. TLS provides reliable alternative to measure the thermal diffusivities of semitransparent materials and low thermal diffusivities. The results show that the nanofluid thermal diffusivity increases with the presence of nanofibers. Complementary techniques: scanning electron microscopy (SEM) and X-ray energy dispersive spectroscopy (EDS) were employed to characterize the nanofibers morphology, average fiber diameter and chemical composition, respectively.

Thermal diffusivity measurements in vegetable oils with thermal lens technique

2003 ◽  
Vol 74 (1) ◽  
pp. 697-699 ◽  
Author(s):  
J. Bernal-Alvarado ◽  
A. M. Mansanares ◽  
E. C. da Silva ◽  
S. G. C. Moreira
Keyword(s):  
Thermal Diffusivity ◽  
Vegetable Oils ◽  
Thermal Lens ◽  
Diffusivity Measurements

Thermal Diffusivity Dependence with Highly Concentrated Graphene Oxide/Water Nanofluids by Mode-Mismatched Dual-Beam Thermal Lens Technique

2021 ◽  
Vol 42 (7) ◽  
Author(s):  
J. L. Jiménez-Pérez ◽  
G. López-Gamboa ◽  
J. F. Sánchez-Ramírez ◽  
Z. N. Correa-Pacheco ◽  
A. Netzahual‑Lopantzi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Thermal Diffusivity ◽  
Thermal Lens ◽  
Dual Beam

scholarly journals Thermal lens spectrometry applied for a sensitive detection of silver-stained protein bands in polyacrylamide gels

2017 ◽  
Vol 249 ◽  
pp. 731-737 ◽  
Author(s):  
Giulia Mazza ◽  
Thomas Posnicek ◽  
Lisa-Marie Wagner ◽  
Jörg Ettenauer ◽  
Karen Zuser ◽  
...  
Keyword(s):  
Thermal Lens ◽  
Sensitive Detection ◽  
Polyacrylamide Gels ◽  
Thermal Lens Spectrometry

scholarly journals Thermal lens spectrometry to study complex fluids

1998 ◽  
Vol 28 (4) ◽  
pp. 00-00 ◽  
Author(s):  
M. L. Baesso ◽  
J. R. D. Pereira ◽  
A. C. Bento ◽  
A. J. Palangana ◽  
A. M. Mansanares ◽  
...  
Keyword(s):  
Thermal Lens ◽  
Complex Fluids ◽  
Thermal Lens Spectrometry
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