PN II - PROGRAM 2007

Environment Friendly Energy Use For Metal Hydrides Heat Engine Powered by Solar or Residual Energy

   RESULTS

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    STAGE I – Assessment and selection of the H₂ absorbent alloys, applicable to H₂ compression process

    STAGE RESULTS

    - Characterization of H₂ absorbent metallic alloys  ;

    - Appraisal suitable alloys for partial substitution of the components

    - Analysis of the production methods of AB₂ and AB₅ alloys

    - The study of the bulk and surface structural characterization of AB₅ and AB₂ alloys

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     STAGE II - Analysis of conversion system: solar energy-heat energy-mechanical energy in adopted

     system.

     STAGE RESULTS

   -   Evaluation of the conversion systems of solar energy to heat energy. Technical solutions for

       helio-conversion system

-   Thermodynamic analyses of H₂ heat engine and solar energy conversion – mathematical model development

    -  Parametric study of the factors which affects the conversions processes and technical evaluation

       of   system design

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     STAGE III – Determination the composition of LaNi_5-xM_x, MmNi_5-xM_x and Ti_1-xZr_xCr_2-yM_y alloys for optimization of compression suitable characteristics. Modelling a rapid H₂ absorption/desorption unit

     STAGE RESULTS

     -   Modeling a hydrogen fast metal hydride reactor

     -   Preparation laboratory quantities of MmNi_5-xM_x and Ti_1-xZr_xCr_2-yM_y  alloys, using different

        metallic substituents (500g)    

    -   Preparation laboratory quantities of LaNi_5-xM_x , AB₅ type alloys, using different metallic

        substituents (500 g)

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      STAGE IV - Thermodynamic and kinetic characterization to H₂ absorption/ desorption of the prepared alloys. Nano-structural alloys preparation.

      STAGE RESULTS

- Nano structural preparation and characterization of the LaNi_4.85Al_0.15 and Ti_0.8Zr_0.2Cr_1.2Mn_0.8 alloys

- Thermodynamic and kinetic characterization of the prepared alloys in the frame of developed hydrogen compression system

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       STAGE V - Design of the hydrogen thermal compression system and development of selected metal hydride alloys.

         STAGE RESULTS

               - Design of the hydrogen thermal compression module based on metal hydide;

            - Elaboration of technical documentation for the selected metal hydride alloys;

            - Hydrogen absorbtion/desorbtion tests of nanostructurated bands alloys;

            - Identification of the suitable substituent in AB₅ type alloys;

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       STAGE VI - Design, engineering and experiments of  the experimental model of the heat operated metal hydride based water pump.

          STAGE RESULTS

            - Design of the water pump system based powered by hydrogen;

            - Preparation of the selected alloys for the hydrogen thermal engine;

            - Preparation and structural characterization of the LaNi_4.85Al_0.15 and Ti_0,8Zr_0,2Cr_1,2Mn_0,8 

              nanostructurated bands alloys;

            - Preparation of LaNi_4.85Al_0.15 alloy to be used in the experiment;

            - Engineering and experiments of the functional model of the heat operated metal hydride based

               water pump powered by solar energy.

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