Study on Thermal Performances of the Heat Pipes with Water - Nanoparticles Mixture

Abstract

In this paper a numerical model is used for analysis of parameters, which affects heat pipe operation. The steady state incompressible flow are solved in Cartesian coordinates in both vapour region and wick structure, using professional CFD (Computational Fluid Dynamics) software. The objectives of this paper were to study of the parameters variation on the operation of heat pipes. The heat pipes are made from copper tube with the outer diameter 8.9 [mm] and the length 200 [mm]. The water is used as a base working fluid while the nanoparticles used in the present study are the iron oxide nanoparticles. Two cases with volume concentration 0 and 2% for iron oxide nanoparticles are considered. Fig.1. Heat pipe construction and principle of operation. In this paper, using the facilities offered by the ANSYS CFX, CFD code, the authors investigate numerically the analysis of parameters which affects heat pipe operation. The steady state incompressible flow is solved in Cartesian coordinates in both vapour region and porous media. The objective of this paper was to study of the parameters variation on the operation of the heat pipes. The heat pipes are made from copper tube with the outer diameter 8.9 [mm] and the length 200 [mm]. The water is used as a base working fluid while the nanoparticles used in the present study are the iron oxide nanoparticles. Two cases with volume concentration 0 and 2% for iron oxide nanoparticles are considered. The geometry creation, which consists of annular concentric heat pipe, through which circulates water and water vapour, were drawn as a CAD data, with the aid of a professional software – package, ACAD 2002, and imported in ANSYS Workbench environment as SAT file.