ABSTRACT
This study presents the new aspects and results concerning the synthesis, characterization, preparation, and thermophysical properties of nanofluids and their use in heat pipes applications, which has been a subject of continuous research. Therefore, the main goal of this chapter is to prepare and to investigate the effects of temperature and weight concentration on the thermophysical properties of nanofluids as well as the study of the thermal performances of the heat pipe using carbon-based nanofluids. The transmission electron microscopy (TEM), HREM, x-ray diffraction (XRD), selected area electron diffraction (SAED), energy-dispersive x-ray analysis (EDX) Raman, and dynamic light scattering (DLS) techniques were used to characterize the structure, purity, and size of the nanoparticles. In this chapter, we will focus on two types of less reported yet very promising water-based nanofluids containing Fe-FexC@C (noted as FeC) and silicon carbide (SiC)–based nanoparticles synthesized by the laser pyrolysis technique.
