Nanofluid is a suspended colloid of nanoparticles with dimensions smaller than 100nm then mixed with a base fluid. Preparation of nanofluids is prepared according to the parameters set in Orthogonal Array L9(34). The preparation process begins with mixing Hybrid Al2O3-TiO2 nanoparticles and aquades base fluid which is then stirred with a magnetic stirrer. Then vibration is carried out with an u…