Numerical Study of Heat Transfer on using Metal Foam and Nanofluid in Double Pipe Heat Exchanger

Abstract

This study investigates the effect of adding metal foam and nanofluids on the performance of a double pipe heat exchanger. Water was used as a working fluid at flow rate 2,3,4,5 Lpm. The outer pipe has diameter 60 mm and length 609.6mm and an inner pipe with a diameter 20 mm. The numerical simulation was conducted by using ANSYS FLUENT 2022 R1 software. Metal foam with the porosity of 0.9 and 40 pores per inch (ppi) was used. The cases considered in the analysis including a heat exchanger with a complete fill of copper foam. The Results showed improvement in heat transfer rate when added metal foam with circle holes by 78% and it increased by 28% when using CuO with concertation 4% while, the amount of heat transfer rate increased by 184% when adding metal foam with circle holes combined with 4% CuO. The results also showed that metal foam with circle holes provide Performance evaluate criteria (PEC) of 1.92 and CuO with concertation 3% produce PEC of 1.3 while, metal foam with circle holes combined with 1% CuO provide the maximum value PEC of 2.14.