PROSES PREPARATION NANOFLUIDA HYBRID (CuO – Al2O3) PADA DOUBLE PIPE HEAT EXCHANGER

Abstract

The development of the industrial world 4.0 has a significant role. One of the main examples in industry is in the process of heat transfer. In the heat transfer process it is mapped into several categories, such as in refrigeration units which play a major role in industrial. One example of a heat transfer medium that is often used in industrial development engineering is the double tube heat exchanger. In general, the working fluids used in heat exchange media are conventional fluids (Water, Ethylene Glycol, Oil) which have basic thermal conductivity values. Hybrid Nanofluids are the main solution and a new breakthrough in dealing with problems in working fluids with relatively high thermal conductivity characteristics. The initial treatment carried out in the use of Hybrid Nanofluids is the treatment of nanoparticles using Scanning Electron Microscopy (SEM) on the nanoparticles used. In the advanced process there is the Nanoparticle Preparation treatment, the Dispersion/Mixing of Nanoparticles with Base Fluid treatment, the Hybrid Nanofluid Sonification treatment, and the Hybrid Nanofluid Testing in a double tube heat exchanger. Determining the quality and optimizing scale of Nanofluid Hybrid is influenced not only by the volume concentration value but also by the working temperature used. Thus it can be concluded that the treatment of Hybrid Nanofluids is the main factor in determining the value of the heat transfer rate and the effectiveness value of the double tube heat exchanger.

Keywords: Double Tube Heat Exchanger, Hybrid Nanofluid (CuO – Al₂O₃), Volume Fraction, and SEM (Scanning

                  Electron Microscopy)