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We present the numerical method for explaining cooling enhancement in a microchannel heat sink which utilizes carbon nanotubes-in-fluid suspensions as coolant. We also show that by increasing CNT nanolayer thickness, the microchannel heat sink temperature gradient is decreased. The temperature contours of the microchannel heat sink with CNTs (with ~25 nm diameter) dispersed in water is investigated...
In this paper we show effective thermal conductivity enhancement of spherical nanoparticles for use in fluid suspensions in microchannels with increase nanolayer thicknesses. For laminar flow, as effective thermal conductivity increases with increasment of nanolayer thickness, Nusselt number decreases. Also the effect of nanolayer thicknesses with increasment of nanoparticle volume fraction is considerable...
We present a theoretical model for explaining the enhancement in the effective thermal conductivity of nanotubes (cylindrical shape particles) for use in nanotube-in-fluid suspensions. Our theoretical model shows that with the decrease of nanotube diameter, the thermal conductivity increases if the thickness of nanolayers increases. We also show that the effective thermal conductivity is decreased...
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