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Steady state mathematical model for a cryogenic loop heat pipe with coherent porous silicon (CPS) wick in the flat plate evaporator.

Number: 0008

Author(s) : MISHRA G. K., NARASIMHAM G. S. V. L., KARUNANITHI R.

Summary

  A steady state model of a Cryogenic Loop Heat Pipe (CLHP) working with liquid nitrogen is formulated. Gerner and co-workers [5] have developed a Loop Heat Pipe (LHP) with Coherent Porous Silicon (CPS) wick with a flat plate evaporator and water as the working fluid. A CLHP with similar evaporator configuration is studied here as it provides the ideal thermal control option in space applications. The model studies the effects of heat load capacity, operating temperature, and other parameters on its performance. It incorporates the two-phase flow regimes in the system. Thermodynamic properties of cryogen are calculated using the fundamental Helmholtz energy equation. Fluid inventory and compensation chamber size estimation is done concurrently. The objective of this work is the modelling and development of a CLHP. The optimum thickness of the CPS wick and the optimum pore radius are estimated for cryogenic applications.

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Details

  • Original title: Steady state mathematical model for a cryogenic loop heat pipe with coherent porous silicon (CPS) wick in the flat plate evaporator.
  • Record ID : 30029004
  • Languages: English
  • Source: Cryogenics 2021 online. Proceedings of the 16th IIR International Conference, October 5-7, 2021.
  • Publication date: 2021/10/05
  • DOI: http://dx.doi.org/10.18462/iir.cryo.2021.0008
  • Document available for consultation in the library of the IIR headquarters only.

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