Enrichment of thermal properties and featuring of alumina/copper/water/EG nanofluid with heat exchanger featured micro-channel: performance evaluation

Hybrid nanofluid-assisted micro-channel heat exchangers offer an innovative solution for automotive and electronic cooling systems, addressing the challenge of limited space and the need for efficient dissipation of high thermal loads. This research study investigates the enhancement of heat exchanger thermal behavior through the use of a (60:40) water/ethylene glycol base fluid combined with a hybrid nanofluid (Al2O3-Cu) at varying concentrations (2%, 4%, and 6% by volume) at a flow rate of 0.1 L/min. The findings indicate that the request for a hybrid nanofluid with a 6% volume of Al2O3/Cu surpasses the thermal behavior of the base fluid system (water). With the hybrid Al2O3/Cu nanofluid at a 6% volume concentration, they achieve a maximum thermal conductivity of approximately 0.60 W/mK at 75°C and a fluid temperature of 89.5°C, while improving the heat transfer capacity, Nusselt number, & thermal index by around 70.4%, 6.78%, and 27.8%, better than the base fluid. However, the pressure drop was marginally increased to 16% compared to the base fluid. Ultimately, this research underscores the significant improvement in the microchannel heat exchangers thermal behavior, signaling the usefulness of hybrid nanofluids in advancing thermal management within electronic cooling systems.

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