Modelling of heat exchangers based on thermochemical material for solar heat storage systems

Publikation: Beiträge in ZeitschriftenKonferenzaufsätze in FachzeitschriftenForschungbegutachtet

Authors

In solar thermal energy storage systems the operation modes involve charging and discharging. This paper focuses only on the charging leading to an endothermic reaction and therefore an efficient heat exchanger is required to transfer the heat for fast and complete charging. Two different heat exchangers are studied in this paper. A plate fin and helical coil heat exchangers embedded in a magnesium chloride bed is modelled and solved using the software Comsol 4.3a based on finite element method. Meshing analysis is performed for parameters sensibility and the results show a temperature variation of 13 °C (helical coil) and 19 °C (plate fin) in the material bed during the charging mode of the thermochemical heat storage system. The pressure distribution in the heat transfer fluid and the temperature distribution in the material bed are presented and the calculated overall heat transfer coefficient of 173 W/m 2 K (helical coil) and 236 W/m 2 K (plate-fin) are obtained on the base of the total heat transferred (Q) to through the system. The fluid flow is in turbulence regime (Re = 13200) in the fin-plate, but in laminar mode (can be kept up to Re = 20000) [1] in the coil because the flow is affected by secondary flow cause by centrifugal forces. This study allows the choice of the h eat exchanger wherein with first experiment has been made and compared.

OriginalspracheEnglisch
ZeitschriftEnergy Procedia
Jahrgang61
Seiten (von - bis)2809-2813
Anzahl der Seiten5
ISSN1876-6102
DOIs
PublikationsstatusErschienen - 01.01.2014

Bibliographische Notiz

Publisher Copyright:
© 2014 The Authors.

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

Zugehörige Aktivitäten

Dokumente

DOI

Zuletzt angesehen

Publikationen

  1. Dalby Söderskog revisited
  2. Habitat management on multiple spatial scales can enhance bee pollination and crop yield in tropical homegardens
  3. The Struggle for EU Legitimacy: Public Contestation, 1950-2005, by Claudia Schrag Sternberg
  4. Decentering the renaissance
  5. The role of organized publics in articulating the exnovation of fossil-fuel technologies for intra- and intergenerational energy justice in energy transitions
  6. Benign by design
  7. Lachen können und eine Sache lieben
  8. Nation as a Context for Strategy
  9. Exports and Firm Characteristics in German Manufacturing Industries: New Evidence from Representative Panel Data
  10. Die Computerspieler
  11. Autobiographical Ecocritical Practices and Academic Environmental Life Writing
  12. Datenverarbeitungssystem 2
  13. Growth and phycocyanin synthesis in the heterotrophic microalga Galdieria sulphuraria on substrates made of food waste from restaurants and bakeries
  14. Was ist Kritik im Zeitalter der Digitalisierung?
  15. Inequality Regimes in Coworking Spaces
  16. Probleme und Strategien der Langzeitarchivierung multimedialer Objekte
  17. Bridging divides in sustainability science
  18. Institutional Logics as orchestras' strategic dilemma
  19. Trade-offs between justices, economics, and efficiency
  20. Healthy Eating and Physical Activity in Schools in Europe
  21. Considerations on Basic Issues Concerning Research on “Content Knowledge in Teacher Education”
  22. “They Are Stumbling Around Quite Helplessly”: How Supporters of Refugee Families Frame Vulnerability and Agency Relating to Childcare
  23. “Come on, we’ll look at it now”: professionals’ work on fetal viewability following spontaneous and induced loss.
  24. Corporate contributions to the Sustainable Development Goals
  25. Making things happen
  26. 12. Fachgespräch der Clearingstelle EEG "1. Novelle des EEG 2012"