Abstract
A three-dimensional model was developed to simulate the heat transfer rate on a heat pipe in a transient condition. This article presents the details of a calculation domain consisting of a wall, a wick, and a vapor core. The governing equation based on the shape of the pipe was numerically simulated using the finite element method. The developed three-dimensional model attempted to predict the transient temperature, the velocity, and the heat transfer rate profiles at any domain. The values obtained from the model calculation were then compared with the actual results from the experiments. The experiment showed that the time required to attain a steady state (where transient temperature is constant) was reasonably consistent with the model. The working fluid r134a (tetrafluoroethane) was the quickest to reach the steady state and transferred the greatest amount of heat.
Highlights
A heat pipe with an internal wick was studied in this research
Vlassov and Riehl present a mathematical model of a loop heat pipe (LHP), which has been validated with experimental results
Nemec et al have created a mathematical model in MS Excel for computing relations of heat transfer limitations, which define the boundaries of heat pipe performance
Summary
A heat pipe with an internal wick was studied in this research. As part of the research, the design of the heat pipe and variable conductance devices for spacecraft thermal control was evaluated. Vlassov and Riehl present a mathematical model of a loop heat pipe (LHP), which has been validated with experimental results. The LHP behavior was predicted as a thermal control component of a satellite under different scenarios of orbital heat fluxes impression on the condenser–radiator.[2] Nemec et al have created a mathematical model in MS Excel for computing relations of heat transfer limitations, which define the boundaries of heat pipe performance.
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