IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v186y2019ics0360544219315099.html
   My bibliography  Save this article

The effect of dehydration temperatures on the performance of the CaO/Ca(OH)2 thermochemical heat storage system

Author

Listed:
  • Yan, J.
  • Zhao, C.Y.
  • Xia, B.Q.
  • Wang, T.

Abstract

A more fundamental understanding of the dehydration and hydration processes of Ca(OH)2 materials is very important for the proper design and operation of thermochemical heat storage systems. There is no simple and effective method which can solve the issues of the rate of the heat storage process and the influence of CO2 on Ca(OH)2 materials. Kinetic studies have proven that a high temperature can increase the storage speed, but a high temperature will aggravate sintering of the material. The problem of carbonate formation due to contact with CO2 can also be solved by a high temperature. Therefore, how to solve the problem of the aggravation of sintering of the material after a single high temperature dehydration is important. In this study, it was found that the heat release ability can be recovered if the heat storage process of the material is applied at a lower temperature in the next cycle. Kinetic studies cannot explain the reasons of these processes. Therefore, the methods of N2 adsorption–desorption and SEM were used to reveal the effects of different dehydration temperatures on the microstructure of the materials. The results showed that the change of the micro-pore structure was the reason for the above processes.

Suggested Citation

  • Yan, J. & Zhao, C.Y. & Xia, B.Q. & Wang, T., 2019. "The effect of dehydration temperatures on the performance of the CaO/Ca(OH)2 thermochemical heat storage system," Energy, Elsevier, vol. 186(C).
    • Handle: RePEc:eee:energy:v:186:y:2019:i:c:s0360544219315099
    DOI: 10.1016/j.energy.2019.07.167
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544219315099
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2019.07.167?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Chaoying Sun & Xianyao Yan & Yingjie Li & Jianli Zhao & Zeyan Wang & Tao Wang, 2020. "Coupled CO2 capture and thermochemical heat storage of CaO derived from calcium acetate," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 10(5), pages 1027-1038, October.
    2. Xu, Y.X. & Yan, J. & Zhao, C.Y., 2022. "Investigation on application temperature zone and exergy loss regulation based on MgCO3/MgO thermochemical heat storage and release process," Energy, Elsevier, vol. 239(PC).

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:186:y:2019:i:c:s0360544219315099. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.