Experimental Study on Thermal Transport Phenomenon of Nanofluids as Working Fluid in Heat Exchanger

다국어 초록 (Multilingual Abstract)

This paper aims to study the convective heat transfer behavior of aqueous suspensions ofnanoparticles flowing through a horizontal tube heated under constant heat flux condition.
Consideration is given to the effects of particle concentration and Reynolds number on heattransfer enhancement and the possibility of nanofluids as the working fluid in various heatexchangers. It is found that (i) significant enhancement of heat transfer performance due tosuspension of nanoparticles in the circular tube flow is observed in comparison with pure water asthe working fluid, (ii) enhancement is intensified with an increase in the Reynolds number andthe nanoparticles concentration, and (iii) substantial amplification of heat transfer performanceis not attributed purely to the enhancement of thermal conductivity due to suspension ofnanoparticles.

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