Thermal synthesis of a thermochemical heat storage with heat exchanger optimization

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

Authors

Thermochemical materials, particularly salt hydrates, have a significant potential for use in thermal energy storage systems. When a salt hydrate is heated to a critical temperature, a chemical reaction is initiated to dissociate it into its anhydrous form and water vapour. The anhydrous salt stores the sensible energy that was supplied for dehydration, which can be later extracted by allowing cooler water or water vapour to flow through the salt, transforming the stored energy into higher sensible heat. This work presents a thermal synthesis modelling of a thermochemical heat storage based on the reactive porous bed of MgCl 22H 2O in a closed system. An analytical sharp front model is also developed to determine the required hydration time and the optimal bed size for such a system at prototype level. A sensitivity analysis helps to identify the optimal parameters that significantly affect the performance of the heat release process. Numerical heat and mass transfer through principal system components is studied using Comsol Multiphysics Software. Numerical results show good concordance with the experiment and reveal that to achieve quasi-complete hydration of the bed, mass flow rate should not be higher than 0.001 kġh -1 for a bed thickness between 4 and 5 cm, considering the present system configuration. In this closed system, inlet vapour pressure into the bed has no influence on the conversion process. Optimal porosity of around 0.76 is found based on the heat and mass transfer dilemma analysis. Optimal heat exchanger design is performed for mass transfer enhancement in the reactive bed.

OriginalspracheEnglisch
ZeitschriftApplied Thermal Engineering
Jahrgang101
Seiten (von - bis)669-677
Anzahl der Seiten9
ISSN1359-4311
DOIs
PublikationsstatusErschienen - 25.05.2016

Zugehörige Projekte

  • Thermische Batterie - Hochleistungswärmespeicher für Privathaushalte

    Projekt: Forschung

  • Thermochemical heat storage for households: thermal management and chemical reaction

    Projekt: Dissertationsprojekt

  • IP KT8 Thermische Batterie II

    Projekt: Andere

DOI

Zuletzt angesehen

Publikationen

  1. Success factors in Balanced Scorecard implementations
  2. Zapping-Fernbedienung
  3. D2R2 2024: Linked Data-driven Resilience Research 2024
  4. Simultaneous Determination of 11 Sulfonamides by HPLC–UV and Application for Fast Screening of Their Aerobic Elimination and Biodegradation in a Simple Test
  5. Symbole unserer Zeit und ihre formierenden Elemente
  6. Bifurcation loads of circular curved beams of glued-laminated timber with continuous lateral support
  7. Scope of the book wastewater reuse and current challenges
  8. Getting an empirical hold of the sustainable university
  9. Supporting Diffusion of IoT Solutions Exemplified by the ChainPORT Initiative
  10. Single photoproduction of η-mesons of hydrogen in the forward direction at 4 and 6 GeV
  11. Comedy of Deviation: Tamar Getter's Hēliotropion Cycle
  12. Loopdiver
  13. Moving beyond unlearning unsustainable consumption
  14. Maintaining the impact of action-oriented entrepreneurship training
  15. Zielablösezyklus
  16. Light treatment of a complex problem
  17. Accumulation and Subjectivity
  18. Trainingslehre - Aufwärmen : Stretchen: ja oder nein?
  19. Bats in a Farming Landscape Benefit from Linear Remnants and Unimproved Pastures
  20. On the way to greener ionic liquids
  21. Climate change and environmental hazards related to shipping
  22. Monitoring mental stressors at work with the work health audit instrument factors
  23. Biomass Composition of Blue Mussels, Mytilus edulis, is Affected by Living Site and Species of Ingested Microalgae
  24. A Reconsideration of the Perfect-Competition Model
  25. Top-down social modulation of perception-action coupling
  26. Relative and absolute scarcity of nature
  27. Double trouble
  28. Rethinking Gamification
  29. One Size fits None
  30. Litigation without end? The deutsche telekom case and the german approach to private enforcement of securities law
  31. Austria
  32. Bahr, Daniel
  33. Nun brat’ mir doch eine(r) einen Elch!
  34. Participatory Scenario Planning