Effect of Nanoparticle and Inclination Angle at Thermal Efficiency in Heatpipes

Abstract

This chapter demonstrated an experimental study about the effect of inclination angle and nano particles in active fluids and curves related to thermosiphons and heatpipes. In this context, the chapter gives a brief overview of the effect of nano fluids on thermal conductivity and thermal efficiency enhancement of a heat pipe on the different operating state and next idea is studying of efficacy related to the inclination angle of the heat pipe. In this book chapter, there is an experimental investigation employing Al2O3 nanoparticle in order to study the enhancement of thermal characteristics of a heat tube in different inclination angle. Three cases, for Al2O3 nanoparticles in water with volume concentrations 1%, 2%, and 3% are considered and results are compared with the thermal performance of the heat pipe filled with pure water. The result of each case will present in the different angular of pipeline and clearly will show the effect of the gravity in the pipeline.