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Hybrid refrigeration system with a novel membrane exchanger

Abstract : The major objective of this thesis is to propose a methodology and a modeling tool to design high performance, affordable and flexible hybrid refrigeration and air conditioning systems. It focuses on hybrid systems based on coupling a desiccant cycle with a vapor compression cycle allowing an efficient humidity control in air conditioning applications and a frost free operation in refrigeration applications. The work was developed to investigate a novel design of a membrane based heat and mass exchanger using original membrane materials and new design related to liquid distribution. The design takes advantage of materials with low cost that are experimentally tested using a new methodology to infer their water vapor permeability that greatly affects the mass transfer. A prototype of the designed membrane exchanger is then built and a modeling approach of the heat and mass transfer phenomena is developed and is supported by experimental characterization. This model is then used to study the energy interest of the integration of these exchangers in air conditioning applications and to design a flexible architecture able to cope with the seasonal variation of the latent to sensible load ratio. The results show that the studied hybrid system present promising alternatives for conventional cycles where they can significantly improve the performance and decrease the consumption of electricity.
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Submitted on : Wednesday, September 16, 2020 - 9:33:07 AM
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  • HAL Id : tel-02940092, version 1


Rasha Mustapha. Hybrid refrigeration system with a novel membrane exchanger. Chemical and Process Engineering. Université Paris sciences et lettres, 2019. English. ⟨NNT : 2019PSLEM073⟩. ⟨tel-02940092⟩



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