Outline • Background • O bjectives and strategy • Integral thermodynamical analysis • FVM analysis: mathematical model • FVM analysis: status and outstanding tasks Background • Loop Heat Pipe: thermal control of Alpha Magnetic Spectrometer used for extra-terrestrial studies on anti-matter (see UNIBG-talk) • Bypass valve: prevent freezing of working fluid (Propylene) in liquid line by interrupti...

Three dimensional numerical investigation is carried out to study the influence of geometry on thermal behavior of flat heat pipe. Two phase mixture model has been formulated to investigate the phase change phenomena during steady state operation of flat heat pipe. In this model, single fluid approach is used and governing equations for mass, momentum and energy are discretised using finite vol...

An experimental study is realized in order to verify the Mini Heat Pipe (MHP) concept for cooling high power dissipation electronic components and determines the potential advantages of constructing mini channels as an integrated part of a flat heat pipe. A Flat Mini Heat Pipe (FMHP) prototype including a capillary structure composed of parallel rectangular microchannels is manufactured and a f...

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In this study, two-dimensional pulsating unsteady flow of nanofluid through a rectangular channel with isothermal walls is investigated numerically. The set of resultant algebraic equations is solved simultaneously using SIMPLE algorithm to obtain the velocity and pressure distribution within the channel. The effects of several parameters, such as volume fraction of different nanoparticles, Rey...

This study presents the improvement of thermal performance of heat pipe using copper nanofluid with aqueous solution of n-Butanol. The nanofluids kept in the suspension of conventional fluids have the potential of superior heat transfer capability than the conventional fluids due to their improved thermal conductivity. In this work, the copper nanofluid which has a 40 nm size with a concentrati...