Experimental investigation on thermal conductivity enhancement of copper (II) oxide-DI water nanofluids

The thermal conductivity enhancement of CuO-deionized water nanofluids over the deionized water is measured using a tailor-made measurement device that uses the 3-ω technique. The measurement and prediction are carried out for temperatures between 15 and 35°C and volume fractions of 0.025%, 0.05%, and 0.1%. The enhancement in thermal conductivity over the base fluid for the tested conditions is observed to be 13 to 25%. A comparison between the measured data and the predicted ones using established correlations reveals that the deviation in prediction is within ±10%.