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This article examined how a variety of mechanisms (layering, Brownian motion, clustering, ballistic phonon motion, thermal boundary resistance, and mass difference scattering) affect the thermal conductivity of alumina based nanofluid. The thermal conductivity values were found using the transient plane source (TPS) method. It was found that mass difference scattering provided the most effective mechanism for reducing the thermal conductivity of the alumina based nanofluid....
This article aimed to illustrate the Transient plane source (TPS) method’s abilities in measuring the local thermal conductivity of metal foams and detecting their in-homogeneities. A method was used to measure the effective thermal conductivity and thermal properties of powder metallurgical (PM)-aluminum (Al) foams, infiltrated aluminum foams, and PM-Zinc foams. The accuracy of the TPS method was then verified in the determination of defects or density in-homogeneities....
An oscillating heat pipe (OHP) is a pipe that transports heat from the evaporator to the condenser via a complex pulsating action. Nanofluids and self-wetting fluids can be used to improve the heat transport capabilities of the OHPs. This study looks at heat transport performances of OHP with different binary fluids. Thermal conductivity was measured using a thermal analyzer, with transient plane source method. Nanofluids were found to have a ...
In this study, sintering parameters in conventional pressure-less sintering are analyzed and the effects of uncoated, Cu(Ni)-coated, and Cr-coated diamond particles are compared for their bulk thermal conductivities. Thermal conductivity was measured at room temperature using a Thermal Constant Analyzer. The addition of diamond particles caused a decrease in the thermal conductivity due to facial air gaps in the composites....
Tetrahedrite is a naturally occurring mineral, possessing a high figure of merit (ZT), used to evaluate the efficiency of thermoelectric (TE) materials. Phase stability and thermoelectric properties of single phase nanocrystalline Zn-doped tetrahedrite was studied. Thermal conductivity was directly measured using a transient plane source technique. It was observed that Zn, and other transition metals, reduced the thermal conductivity significantly due to increased phonon scattering....
