Since nanofluids was introduced to increase the thermal conductivity, it gives great hope for the field of heat transfer. Research and application of nanofluids continues to experience growth and improvement. Dispersing nanoparticles into the base fluid to form a suspense nanofluids certainly has the different characteristics of a thermal conductivity. The use of nano-oxide particles are also widely used as a good alternative working fluid as the working fluid heat exchanger as well as the working fluid in the heat pipes and other cooling technologies. Its very important to know the characteristics of the thermal conductivity of nanofluids oxide at low and high volume fraction. The study was conducted by dispersing nanoscale particles of CuO, Al2O3 and TiO2 are each measuring 20 nm in a base fluid water (H2O) and doing sonification using ultrasonic processor for 30 minutes. Fraction volume created in volume fraction lower at 0.1% to 0.9% and a high volume fraction of 1% to 10%. Thermal conductivity of nanofluids testing oxides at low volume fraction and a high volume fraction KD2 done using a method that is measured at a temperature of 25oC. The test results show the characterization of thermal conductivity of nanofluids oxide in this case is CuO- Water, Al2O3-Water and TiO2-Water each provide a significant increase in thermal conductivity at low volume fraction. The thermal conductivity of CuO-water nanofluid higher at low and high volume fraction than the thermal conductivity of Al2O3-Water and TiO2-Water.
|Journal||Jurnal Energi dan Manufaktur|
|Publication status||Published - 2015|