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Study on medium-temperature chemical heat storage using mixed hydroxides.

Author(s) : KATO Y., TAKAHASHI R., SEKIGUCHI T., et al.

Type of article: Article, IJR article

Summary

It was demonstrated that chemical heat storage materials mixed with metal hydroxides were capable of storing heat at medium temperatures of approximately 200-300°C. The performances of the developed materials were demonstrated in a thermo-balance and packed bed reactor. The mixed hydroxides can increase the operation heat storage temperature by changing the composition of mixed metal oxides in the material. Mg(a)Ni(1-a)[OH)2, which is a mixed hydroxide of magnesium hydroxide, Mg(OH)2, and nickel hydroxide, Ni(OH)2, is a candidate heat storage material. The mixed hydroxide was dehydrated, that is, it was capable of storing heats at 200-300°C, at which pure Mg(OH)2 could not be dehydrated and could not store heat. The heat output performance of the material was examined in a packed bed reactor. It was shown that the mixed hydroxide material was potentially useful for chemically storing medium-temperature heat such as waste heats emitted from internal combustion engines, solar energy system and high-temperature processes.

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Pages: 661-666

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Details

  • Original title: Study on medium-temperature chemical heat storage using mixed hydroxides.
  • Record ID : 2009-1685
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 32 - n. 4
  • Publication date: 2009/06

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