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海水凍結による製塩に関する実験的研究 Experimental Study on Salt Production by Freezing Seawater 10399644 Watanabe, Toshiaki 渡邉, 敏晃 ワタナベ, トシアキ Watanabe 渡邉 ワタナベ Toshiaki 敏晃 トシアキ 40399639 Nakamura, Makoto 中村, 誠 ナカムラ, マコト Nakamura 中村 ナカムラ Makoto 誠 マコト 80399641 Ohta, Hiromitsu 太田, 博光 オオタ, ヒロミツ Ohta 太田 オオタ Hiromitsu 博光 ヒロミツ open access Salt production; Freeze concentration; Seawater; Pool freezing; Forced convection freezing In Japan, mainly method of production of salt is two species at present, one is ion exchange membrane method, another is sun breaching method. Ion exchange membrane method has advantages as follows; large-scale production, short processing time, labor saving, by mechanizing all process. All process have carried out indoors, its lot area is small, this method is not affected by weather conditions. Disadvantage is that this method strongly depends on electric energy. Sun breaching method has advantages that this method can directly use solar energy as natural energy without energy exchange. Disadvantage is that small-scale production, long processing time, high cost, by not mechanizing all process. In this method, partial process have carried out outdoor, therefore, this method is affected by weather conditions, and production is unstable. This method require many man power and large lot area. We consider that introduction of technology of freezing into process of salt production. That is freeze concentration. Repeatedly freeze concentration reaches high concentration of seawater. In this study, process of concentration of seawater is focused on production of salt. Experiments on freeze concentration of seawater carried out in the both case of pool freezing and forced convection freezing. The aim of study is to discuss on efficient method of concentration of seawater using freezing. 編集：水産大学校 水産研究・教育機構 Japan Fisheries Research & Education Agency 2015-12-28 jpn departmental bulletin paper https://fra.repo.nii.ac.jp/records/2012063 fishu_k_64_57 https://agriknowledge.affrc.go.jp/RN/2010921991 agriknowledge AN00124678 0370-9361 水産大学校研究報告 Journal of National Fisheries University 64 1 8 57 64 https://fra.repo.nii.ac.jp/record/2012063/files/fishu_k_64_57.pdf application/pdf 712.5 KB 2024-10-11