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Optimization of a radiator for a MPFL system in a GEO satellite

  • Afshari, Behzad Mohasel (Satellite Research Institute (SRI), Iranian Space Research Center (ISRC)) ;
  • Abedi, Mohsen (Satellite Research Institute (SRI), Iranian Space Research Center (ISRC)) ;
  • Shahryari, Mehran (Satellite Research Institute (SRI), Iranian Space Research Center (ISRC))
  • Received : 2017.07.01
  • Accepted : 2017.08.29
  • Published : 2017.11.25
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Abstract

One of the components that used in the satellite thermal control subsystem is the Mechanically Pumped Fluid Loop (MPFL) system; this system mostly used in geosynchronous orbit (GEO) satellites, and can transfer heat from a hot point to a cold point using the fluid which circulated in a closed loop. Heat radiates to the deep space at the cold plate to cool down the fluid temperature. In this research, the radiative heatexchanger (RHX) for a MPFL system is optimized. The genetic algorithm has been used for minimizing the total mass and pressure drop by considering a constant transferred heat rate at the heat exchanger. The optimization has been done in two cases. In case I, two parameters are considered as a goal function, so optimization is performed using NSGA-II method. Results of optimization are shown in the pareto diagram. In case II, the diameter of pipe is considered constant, so the optimized value for distances of the parallel pipes is obtained by using the genetic algorithm, in which the system has the least total mass. Results show that in the RHX, by increasing the pipe diameter, pressure drop decreases and total mass increases. Also by considering a constant value for pipe diameter, an optimum distance between pipes and pipe length are obtained in which the system has a minimum mass.

Keywords

References

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