Thermal conductivity and viscosity of Mg(OH)2-ethylene glycol nanofluids

AbstractA series of experiments have been carried out to determine the thermal conductivity and viscosity of a novel nanofluid, i.e., Mg(OH)2/ethylene glycol (EG). The thermal conductivity and viscosity of nanofluids with volume fractions by 2 % in the temperature range of 25–55 °C are measured. The results unfold that in the temperature of 35 °C, called critical temperature, the ratio of nanofluid viscosity to water viscosity is minimized. This critical temperature reveals that it is more advantageous to use Mg(OH)2/EG nanofluids instead of water at temperatures higher than 35 °C from the pressure drop and pumping power viewpoint.

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