Study of increasing the length of the tube on thermosyphon heat pipe performance

Subject Areas : Heat Transfer

farshid neemati ¹ , Hadi Kargar Sharifabad ²

1 - مرکز تحقیقات انرژی و توسعه پایدار، واحد سمنان، دانشگاه آزاد اسلامی، سمنان، ایران
2 - مرکز تحقیقات انرژی و توسعه پایدار، واحد سمنان، دانشگاه آزاد اسلامی، سمنان، ایران

Received: 2019-04-08 Accepted : 2019-06-15 Published : 2019-08-23

Keywords: numerical simulation, heat transfer, Heat pipe, thermosyphon,

Abstract :

The heat pipe as superconductors can play an essential role in heat transfer According to the application, are designed in different sizes The heat pipe for heat transfer with very high thermal conductivity that heat energy by evaporation and condensation of a working fluid with minimal temperature drop pass When the heat of evaporation area is the working fluid evaporates and creates a pressure gradient in the tube The steam pressure gradient along the tube makes the move to steam condenser condenses in the condenser is, the latent heat is released. The working fluid of the heat pipe by gravity thermosyphon returns to the evaporation zone In this study the vapor and liquid inside the heat pipe is modeled thermosyphon type It is assumed that the flow is permanent and peaceful two-dimensional and volumetric forces have been ignored. In this paper, the finite volume method and SIMPLE algorithm is used. The geometry of the model with the software Gambit drawing grid and numerical calculations to using a software package Efficient called Ansys Fluent by subsidies carried out and the results with the results of a study comparing the temperature of the wall and the heat pipe in all three areas have been analyzed.