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Experimental analysis of a capillary pumped loop for terrestrial applications with several evaporators in parallel

Abstract : In the context of high-dissipation electronics cooling for ground transportation, a new design of two-phase loop has been improved in recent years: the capillary pumped loop for terrestrial application (CPLTA). This hybrid system, between the two standard capillary pumped loop (CPL) and loop heat pipe (LHP), has been widely investigated with a single evaporator, and so a single dissipative area, to know its mean operating principles and thermohydraulic couplings between the components. To aim to extend its scope of applications, a new experimental CPLTA with three evaporators in parallel is studied in this paper with methanol as working fluid. Even if the dynamics of the loop in multi-evaporators mode appears on the whole similar to that with a single operating evaporator, additional couplings are highlighted between the several evaporators. A decoupling between vapor generation flow rate and pressure drop in each evaporator is especially revealed. The impact of this phenomenon on the conductance at evaporator is analyzed.
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https://hal.univ-lorraine.fr/hal-01744845
Contributor : Nicolas Blet <>
Submitted on : Tuesday, March 27, 2018 - 4:42:25 PM
Last modification on : Thursday, March 5, 2020 - 7:24:28 PM

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Nicolas Blet, Yves Bertin, Vincent Ayel, Cyril Romestant, Vincent Platel. Experimental analysis of a capillary pumped loop for terrestrial applications with several evaporators in parallel. Applied Thermal Engineering, Elsevier, 2016, 93, pp.1304 - 1312. ⟨10.1016/j.applthermaleng.2015.10.096⟩. ⟨hal-01744845⟩

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