Development of ethylene glycol‐Cr₂AlC nanofluid for thermal management in the automotive sector

Abstract

The current study is focused on the development of a novel nanofluid for efficient thermal management in the automotive sector. For this, novel Cr 2 AlC-based nanofluids were prepared and its properties were compared with conventional nanofluids prepared under similar condition. h-BN, MoS 2 , Al 2 O 3 , and Cr 2 AlC powders of <60 nm were prepared by high energy ball mill and were added into the EG fluid in 0.25 and 0.50 wt%. The nanofluids were investigated for viscosity, flash point, fire point, thermal conductivity, stability, and freezing temperature. The flash and fire points of EG increase with the addition of nanocrystalline powders. The viscosity of nanofluids decreases and thermal conductivity increases with increase in temperature. Among all addition, nanofluid containing 0.50 wt% of Cr 2 AlC shows maximum enhancement in the thermal conductivity and freezing temperature by 57.91% and 42.15%, respectively. It also shows a good stability up to 20 days. K E Y W O R D S cooling agent, Cr 2 AlC MAX Phase, ethylene glycol, nanofluids, thermal conductivity 1072 | DAVIS et Al.

Experimental investigation on low concentration nanofluids with Fresnel lens and evacuated tubes for solar applications

“…The heat transfer enhancement in microchannel was studied using Al 2 O 3 nanofluids by Munimathan et al 29 The enhancement in heat transfer compared to water was found to be 23.06% and 32.8% for .1% and .25% volume concentrations. Davis et al 30 reported the thermal conductivity of EG and EG added with .50 wt.% of Al 2 O 3 nanoparticles. The thermal conductivity was measured in the temperature range of 300 to 360 K. They obtained .25 and .36 W/mK respectively for EG and Al 2 O 3 nanofluids.…”

“…The enhancement in heat transfer compared to water was found to be 23.06% and 32.8% for .1% and .25% volume concentrations. Davis et al 30 . reported the thermal conductivity of EG and EG added with .50 wt.% of Al 2 O 3 nanoparticles.…”