• Pipe
• Heat
• Sink
• wick
• FEM
• Vigna

The aim of this work is to carry out analyses, thermal and fluid dynamics of element used to heat transimission that can be utilized to cooling other object connected Heat Sink or to move heat between two different points at distance Heat Pipes. The analyses was carried out using a finite element modelling thanks to Ansys Multhiphysics and Ansys CFX. Firstly an optimization about the Heat Sink dimensions for a natural convection working was done. In this analysis the Q/V parameter, that is the heat transferred over the Heat Sink volume, was maximized being attention also to have a good value of Q. After, an analytical model of Jouhara for a different Heat Sink that works in forced convection, was validated varying the entrance air velocity. On the Heat Pipes study, in this work, the wick performance was analyzed. The wick has a very important role on the heat transferred in the Heat pipe radial direction having a decisive effect on the thermal conductivity. The objective of this study has been to understand how different kind of wick, distinguishable using the porosity parameter, influence the thermal conductivity values in radial direction carring out, firstly a theorycal analysis using the correlations found in literature and after building a F.E.M. model.