Experimental Investigations on Thermal Enhancement of Multi Walled Carbon Nanotubes

Mechanical Engineering

As multi walled carbon nanotubes exhibit thermal conductivities which are thousands of times greater as compared to the basic fluids used in heat transfer applications, such as water, ethylene glycol, and mineral oil, they proposes an extended capabilities for enhancement in heat transfer. Experimental investigation outcomes for the tests conducted on MWCNT nanofluids are presented in this paper. The volumetric concentration of mineral water based MWCNT nanoparticles were varied from 0.05% to 0.2%. Tests were performed under the criteria of uniform heat flux in the complete flow region from laminar to the turbulent comprising maximum Reynolds number of almost 18,450. Constant temperature was ensured at the inlet of test section by providing adequate cooling system in the outlet of experimental test unit. Maximum enhancement of almost 38% in the heat transfer has been recorded with 0.2% concentration by volume of MWCNT nanofluid at the highest flow rate.

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