Étude du fonctionnement des réacteurs d'une pompe à chaleur à compression-absorption : modélisation des mécanismes de changement d'état d'un fluide binaire zéotrope s'écoulant en film tombant sur une plaque plane verticale

Abstract : This report is a study of the absorber and the desorber of an absorptioncompression heat pump, which are falling film type reactors using vertical plates geometry. Two kinds of models with coupled heat and mass transfers are detailled. The first one is based on local equations using thermal and molecular diffusivities ; it allows the calculation of Nusselt and Sherwood numbers. The second one is based on equations using heat and mass transfer coefficient. Both models give heat flux and mass flux in the liquid solution and in the vapor. The influence of the value of heat and mass coefficients that appear in the second, model on the global performances of the absorption-compression cycle is presented. Sorne results are compared with measurements made on an experimental heat pump. A second experimental study is made to compare the efficiency of different corrugated plates used in the reactors.
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Theses
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http://docnum.univ-lorraine.fr/prive/SCD_T_1996_0315_LOTTIN.pdf
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https://hal.univ-lorraine.fr/tel-01747230
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Submitted on : Thursday, March 29, 2018 - 10:55:20 AM
Last modification on : Friday, March 30, 2018 - 1:28:44 AM

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Olivier Lottin. Étude du fonctionnement des réacteurs d'une pompe à chaleur à compression-absorption : modélisation des mécanismes de changement d'état d'un fluide binaire zéotrope s'écoulant en film tombant sur une plaque plane verticale. Autre. Université Henri Poincaré - Nancy 1, 1996. Français. ⟨NNT : 1996NAN10315⟩. ⟨tel-01747230⟩

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