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Theses

Etude de la distribution d'un mélange liquide-vapeur à l'entrée des échangeurs de chaleur

Abstract : Maldistribution of two-phase flow causes a significant decrease of thermal and hydraulic performance of heat exchangers. The objective of this work is the identification of the parameters which control the distribution of the phases. In order to do that, a specific experimental set-up has been designed to simulate a compact heat exchanger working in adiabatic conditions with refrigerant 113. The effects of the following parameters have been studied : inlet mass quality, mean mass velocity, nozzle inlet diameter and number of channels. The distribution of the phases and the pressure drops have been measured in each channel. Flow pattern at the inlet of the test-section and in the inlet manifold has been observed and has given information about the two-phase flow shucture evolution. Simultaneously, a separated phase model is proposed to describe the two-phase flow in this geometry. A first sensitivity study is presented.
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Theses
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http://docnum.univ-lorraine.fr/prive/SCD_T_2000_0075_BERNOUX.pdf
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https://hal.univ-lorraine.fr/tel-01746455
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Submitted on : Thursday, March 29, 2018 - 10:38:10 AM
Last modification on : Monday, January 11, 2021 - 11:33:29 AM

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  • HAL Id : tel-01746455, version 1

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Pierre Bernoux. Etude de la distribution d'un mélange liquide-vapeur à l'entrée des échangeurs de chaleur. Autre. Université Henri Poincaré - Nancy 1, 2000. Français. ⟨NNT : 2000NAN10075⟩. ⟨tel-01746455⟩

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