Thermal Energy Storage, Heat Pump and Thermal Energy Transportation Technologies. Cold Heat Storage Performance of Amine/Water Solutions.

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  • 蓄熱・ヒートポンプ・熱輸送　　アミン系水溶液の蓄冷性能に関する研究
  • アミンケイ スイヨウエキ ノ チクヒエショウノウ ニ カンスル ケンキュウ

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With a view to utilizing the cold heat of Liquid Natural Gas, candidates for cold storage media, which store cold heat in a temperature range between -20 to -50°C as latent heat, are investigated. Amine/water binary solutions are found to be promising candidates. A liquid/solution equilibrium experiment shows eutectic character of these solutions. Ametylamine/water solution is expected to be the lowest temperature cold heat storage media, and is examined in a phase change characteristic experiment. The solution generats dendrite crystals in the first phase change. The generated liquid/solid solution shows eutectic slurry character. Based on the experimental results, the possibility of using the eutectic solution as a fluid high-density cold storage media is discussed.

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