Topic
Heat transfer
About: Heat transfer is a research topic. Over the lifetime, 181795 publications have been published within this topic receiving 2923586 citations. The topic is also known as: heat exchange.
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TL;DR: In this paper, the existence of local thermal equilibrium in a fluidized bed depends on the size of the layer, mean pore size, interstitial heat transfer coefficient, and thermophysical properties.
266 citations
TL;DR: In this paper, different nanofluids were developed by mixing a water base fluid with magnetic nanoparticles, and thermal properties such as thermal conductivity and viscosity of the obtained nanoparticles were investigated.
Abstract: The addition of nanoparticles to a base fluid is one of the significant issues to enhance heat transfer. In this study, different nanofluids were developed by mixing a water base fluid with magnetic nanoparticles. Thermophysical properties such as thermal conductivity and viscosity of the obtained nanofluid were investigated. The effect of different nominal diameters of nanoparticles and concentrations of nanoparticles on the thermal conductivity and viscosity of nanofluids have been examined. Three different diameters of magnetic nanoparticles (about 37 nm, 71 nm, and 98 nm) have been tested in this experimental investigation. Experimental results indicate that thermal conductivity increases as volume fraction increases, and thermal conductivity of the nanofluid increases with a decrease of nanoparticle’s size. Moreover, the nanofluid dynamics viscosity ratio increases with an increase in particle concentration and nanoparticle’s diameter. This paper identifies several important issues that should be considered in future work.
266 citations
TL;DR: In this paper, the optimal board-to-board spacing and maximum total heat transfer rate from a stack of parallel boards cooled by laminar forced convection was reported. But the optimal spacing is not directly related to the surface thermal condition.
266 citations
01 Jan 2016
TL;DR: The principles of heat transfer in porous media is universally compatible with any devices to read and is available in the digital library an online access to it is set as public so you can get it instantly.
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266 citations
TL;DR: In this article, an experimental study of pool boiling in water-Al2O3 nano-fluids on horizontal tubes of small diameter is carried out and it is found that at the range of narrow tubes the deterioration in performance in boiling is less compared to large industrial tubes which makes it less susceptible to local overheating in convective applications.
266 citations