International Journals of Multidisciplinary
Research Academy (IJMRA)

Abstract:
A simulation analysis was carried out to augment the thermal performances of cylindrical pipe in a microchannel heat exchanger (MCHS) using the square shape of rib and consuming nanofluids- Aluminum oxide Al2O3 as working fluid. Research values are compared with base fluid to ascertain the thermal performances. The renormalized RNG k-ϵ turbulent model was selected for the investigation with Reynolds number in the ranges of 5000 to 20000. Dittus Boelter and Blasius' empirical equation are involved to validate the turbulent models. The parameter considers for numerical analysis are the average Nusselt number (Nu) and friction factor (ƒ). The investigation reveals that the maximum heat transfer occurred in Al2O3 at a higher Reynolds number. The enhancement of Nu values has 2.67 times greater than base fluid and 1.54 times of pressure drop in Reynolds number 18000
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