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Novel Adsorption Cycle for High-Efficiency Adsorption Heat Pumps and Chillers: Modeling and Simulation Results

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Listed:
  • Valentin Schwamberger

    (Energy and Building Technology Group, Institute of Applied Thermofluidics, Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, 76131 Karlsruhe, Germany)

  • Aditya Desai

    (Energy and Building Technology Group, Institute of Applied Thermofluidics, Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, 76131 Karlsruhe, Germany)

  • Ferdinand P. Schmidt

    (Energy and Building Technology Group, Institute of Applied Thermofluidics, Karlsruhe Institute of Technology (KIT), Kaiserstr. 12, 76131 Karlsruhe, Germany)

Abstract

A novel thermodynamic cycle for adsorption heat pumps and chillers is presented. It shows a significant improvement of the internal heat recovery between the adsorption and the desorption half cycle. A stratified thermal storage, which allows for a temperature-based extraction and insertion of storage fluid, is hydraulically coupled with a single adsorber. The benefit is an increased efficiency by reusing the released heat of adsorption for regeneration of the adsorber and by rendering possible low driving temperature differences. For investigating the second law of this cycle, a dynamic model is employed. The transient behavior of the system and the respective losses because of driving temperature differences at the heat exchangers and losses due to mixing within the storage and to the surroundings are depicted in this one-dimensional model. The model is suitable both for analyzing this advanced cycle as well as for comparisons with other cycles.

Suggested Citation

  • Valentin Schwamberger & Aditya Desai & Ferdinand P. Schmidt, 2019. "Novel Adsorption Cycle for High-Efficiency Adsorption Heat Pumps and Chillers: Modeling and Simulation Results," Energies, MDPI, vol. 13(1), pages 1-23, December.
  • Handle: RePEc:gam:jeners:v:13:y:2019:i:1:p:19-:d:300038
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    References listed on IDEAS

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    1. Ursula Wittstadt & Gerrit Füldner & Olaf Andersen & Ralph Herrmann & Ferdinand Schmidt, 2015. "A New Adsorbent Composite Material Based on Metal Fiber Technology and Its Application in Adsorption Heat Exchangers," Energies, MDPI, vol. 8(8), pages 1-16, August.
    2. Andreas Velte & Gerrit Füldner & Eric Laurenz & Lena Schnabel, 2017. "Advanced Measurement and Simulation Procedure for the Identification of Heat and Mass Transfer Parameters in Dynamic Adsorption Experiments," Energies, MDPI, vol. 10(8), pages 1-25, August.
    3. Henninger, Stefan K. & Ernst, Sebastian-Johannes & Gordeeva, Larisa & Bendix, Phillip & Fröhlich, Dominik & Grekova, Alexandra D. & Bonaccorsi, Lucio & Aristov, Yuri & Jaenchen, Jochen, 2017. "New materials for adsorption heat transformation and storage," Renewable Energy, Elsevier, vol. 110(C), pages 59-68.
    4. Wittstadt, Ursula & Füldner, Gerrit & Laurenz, Eric & Warlo, Alexander & Große, André & Herrmann, Ralph & Schnabel, Lena & Mittelbach, Walter, 2017. "A novel adsorption module with fiber heat exchangers: Performance analysis based on driving temperature differences," Renewable Energy, Elsevier, vol. 110(C), pages 154-161.
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