Experimental investigation on the multi-metallic Cu-Zn nanofluids heat transfer enhancement and pressure losses

الملخص EN

Metallic nanofluids are suspensions of metallic particles of nanometre size in base fluids.

The combination of two kinds of metallic particles mixed at the same volume ratio is known as multi-metallic nanoparticles.

These multiple metallic particles of nanometre size were suspended in deionized H2O via the use of ultrasonic vibrators at varying volume fractions as well as variations in the ratios of metallic/metallic particles of nanometre size.

In our study the dynamic viscosity, the nanofluid’s heat conductivities were determined for varying temperatures and volume fractions.

The coefficient of thermal transmission of the flowing nanofluid in the constant wall heat flux tube were determined experimentally in laminar condition.

The results revealed huge thermal transmission enhancement comparison to the base fluids.

The pressure loses were illustrated for all nanofluids.

The comparisons of the different metallic and multi-metallic types of the nanofluids were showed that Cu nanofluids have a greater coefficient of thermal transmission compared with the Cu-Zn, Zn at equal volume fractions.