Pressure drop and convective heat transfer of Al2O3/water and MWCNT/water nanofluids in a chevron plate heat exchanger

Nanofluids to improve the performance of PEM fuel cell cooling systems: A theoretical approach

“…As the viscosity of nanofluids increases with concentration more pumping power is required compared to that with the base fluid. Same trend of pressure drop and pumping power has also been found in many experimental studies by researchers [112,121,122]. However, for the dilute concentration of nanoparticles ($0.05 vol% or less), the increase in pumping power is almost negligible which is also fortified by many experimental findings [99,122].…”

A review of heat transfer enhancement techniques in plate heat exchangers

“…Furthermore, Pantzali et al [141], Taws et al [142] and Huang et al [143] stated that turbulence intensity inside the PHE might be suppressed by adding nanoparticles, even a delay of laminarturbulence transition was found in Ref. [135].…”

“…Despite a few cases showing the deterioration of the heat transfer performance [141][142][143][144], the studies summarized in Table 4 present enhancement of the PHE thermal performance by using nanofluids as working fluids, especially in the case of a 49 % increase in the Nusselt number with the CuO-EG nanofluid [111] and a 53 % increase in the heat transfer coefficient with the MWCNT-water nanofluid [129]. The heat transfer mechanism of nanofluids can be considered as the compound effects of several factors.…”

Nanouptake - An European Network on Nanofluid Research

“…The Prandtl number of a nanofluid is therewith -except for extraordinary low concentrations of nanoparticles -always different than the one of its base fluid. In a joined effort, experimental data of five different experiments from independent research teams [5][6][7][8][9][10] are compiled. These experiments are: All of these experiments have two results in common:…”