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Separation characteristics of clathrate hydrates from a cooling plate for efficient cold energy storage


  • Daitoku, Tadafumi
  • Utaka, Yoshio


To improve the coefficient of performance (COP) in air-conditioning systems, the liquid-solid phase change temperature of the cold energy storage material should be approximately 10 °C. Moreover, a thermal storage material that forms a slurry can maintain large heat capacity for the working fluids. Solids that adhere to the heat transfer surface form a thermal resistance layer and significantly reduce the cooling storage rate; therefore, it is important to avoid adhesion of a thick solid layer on the surface to realize efficient energy storage. Tetra-n-butyl ammonium bromide (TBAB) clathrate hydrate possesses the qualities of an efficient cold storage material. Therefore, it was used to examine the force required to remove solid phase from the heat transfer surface for a harvest-type cooling unit. The effects of TBAB concentration and surface properties on the scraping force required to remove adhered TBAB hydrate solid from the heat transfer surface were examined experimentally and comprehensively. Results showed that the required scraping force increased with TBAB concentration and was very small for the low-energy heat transfer surface.

Suggested Citation

  • Daitoku, Tadafumi & Utaka, Yoshio, 2010. "Separation characteristics of clathrate hydrates from a cooling plate for efficient cold energy storage," Applied Energy, Elsevier, vol. 87(8), pages 2682-2689, August.
  • Handle: RePEc:eee:appene:v:87:y:2010:i:8:p:2682-2689

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    Cited by:

    1. Li, Min & Wu, Zhishen & Kao, Hongtao, 2011. "Study on preparation, structure and thermal energy storage property of capric–palmitic acid/attapulgite composite phase change materials," Applied Energy, Elsevier, vol. 88(9), pages 3125-3132.
    2. Babu, Ponnivalavan & Linga, Praveen & Kumar, Rajnish & Englezos, Peter, 2015. "A review of the hydrate based gas separation (HBGS) process for carbon dioxide pre-combustion capture," Energy, Elsevier, vol. 85(C), pages 261-279.
    3. Obara, Shin’ya & Yamada, Takanobu & Matsumura, Kazuhiro & Takahashi, Shiro & Kawai, Masahito & Rengarajan, Balaji, 2011. "Operational planning of an engine generator using a high pressure working fluid composed of CO2 hydrate," Applied Energy, Elsevier, vol. 88(12), pages 4733-4741.
    4. Babu, Ponnivalavan & Ong, Hong Wen Nelson & Linga, Praveen, 2016. "A systematic kinetic study to evaluate the effect of tetrahydrofuran on the clathrate process for pre-combustion capture of carbon dioxide," Energy, Elsevier, vol. 94(C), pages 431-442.
    5. Shi, X.J. & Zhang, P., 2013. "A comparative study of different methods for the generation of tetra-n-butyl ammonium bromide clathrate hydrate slurry in a cold storage air-conditioning system," Applied Energy, Elsevier, vol. 112(C), pages 1393-1402.
    6. Obara, Shin'ya & Kikuchi, Yoshinobu & Ishikawa, Kyosuke & Kawai, Masahito & Yoshiaki, Kashiwaya, 2015. "Development of a compound energy system for cold region houses using small-scale natural gas cogeneration and a gas hydrate battery," Energy, Elsevier, vol. 85(C), pages 280-295.


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