Thermal Conductivity Paper Database

Heat transfer enhancement of Al2O3-H2O nanofluids flowing through a micro heat sink with complex structure

Nanofluids are used in heat sink applications to improve the rate of heat dissipation and reduce temperature gradients in electronics. This study specifically examined the thermal properties of Al2O3-H2O nanofluids used in micro heat sinks. An instrument measured the thermal conductivity of the Al2O3-H2O nanofluids using the transient plane source (TPS) method. Results showed that, as expected, thermal conductivity increased with the concentration of ...

Author(s): Guodong Xia, Xianfei Liu, Yifan Li, Yuling Zhai

Comparison of thermal properties measured by different methods

In this paper, the thermal conductivity of rock samples was tested using three different methods: the transient plane source (TPS) method, the divided bar method, and calorimetric method. Two rock samples were tested under the TPS method with different procedures (i.e. heating and cooling times, sizes of samples). The results of the TPS method were slightly lower than the results of the divided bar method, but yielded an acceptable ...

Author(s): Ilmo Kukkonen, Jan Sundberg, Lars HC$lldahl

Tannin-based monoliths from emulsion-templating

Porous monoliths, often referred to as polymerised High Internal Phase Emulsions (polyHIPEs), are materials made of polymers that have applications ranging from chemical engineering to biomedicine. In this paper, a TPS instrument measured the thermal conductivity of tannin-based monoliths with the transient plane source (TPS) technique. Results showed that as the porosity of the polyHIPEs increased, the thermal conductivity decreased linearly, a characteristic that could be used for applications in ...

Author(s): A. Pizzi, Alain Celzard, Alicia MartC-nez de Yuso Arisa, Alicia Martinez de Yuso, Andrzej Szczurek, Antonio Pizzi, Vanessa Fierro

Thermo-optical properties of partially unzipped multiwalled carbon nanotubes dispersed nanofluids for direct absorption solar thermal energy systems

Water is being used to absorb incident light for use in solar power applications. Adding nanoparticles to water improves the solar collection efficiency. In this paper, a Thermal Analyzer measured the thermal conductivity of the nanofluids using the transient plane source (TPS) method. Results showed that the thermal conductivity of the nanofluids increased with temperature and nanoparticle concentration....

Author(s): Rashmi Chandrabhan Shende, Sundara Ramaprabhu

Thermal conductivity of poly-alpha-olefin (PAO)-based nanofluids

This paper examined the thermal conductivity of poly-alpha-olefin (PAO) based nanofluids using three transient methods including the transient plane source (TPS) technique. They also explored how temperature, shape, and nanoparticle concentration affect thermal conductivity. The thermal properties of aluminum oxide/PAO and multi-walled carbon nanotubes (MWCNT)/PAO were tested, and results showed that nanoparticle concentration increases thermal conductivity more than expected.

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Author(s): Javier A. Narvaez