This study conducted experiments to compare the desalination efficiency of gravity and centrifugal desalination methods for freezing desalination, showing the superiority of centrifugal desalination. Moreover, through experiments on supercooled water production, it was determined that supercooled water can operate stably at an evaporator temperature of −4.5 °C, and its supercooling state can be released using ultrasound. Based on the experimental results, a novel system that combines freezing desalination with ice storage is proposed. The proposed system utilizes supercooled water for ice production and centrifugal post-treatment, using desalinated ice as a cold storage medium to integrate desalination and ice storage. The proposed system showed a 30 % lower total capital cost compared to conventional systems, with a payback period of 38.18 % lower than conventional system (5.42 years). Additionally, the system demonstrated optimal economic performance when utilizing 80 % of its ice storage capacity, with a payback period of 3.38 years, contrasting with 7.62 years when utilizing 20 % storage capacity. The application of this system in four regions with varying peak and off-peak electricity prices, including Guangdong, Fujian, Hainan, and, France revealed that the system demonstrates greater economic viability in areas with significant disparities in electricity pricing.

中文翻译：

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重力离心法冷冻海水淡化实验分析及冷冻海水淡化与冰蓄冷耦合系统的经济评价


本研究通过实验比较了重力海水淡化和离心海水淡化方法对冷冻海水淡化的海水淡化效率，显示了离心海水淡化的优越性。此外，通过过冷水生产实验，确定过冷水可以在-4.5℃的蒸发器温度下稳定运行，并且可以利用超声波释放其过冷状态。根据实验结果，提出了一种将冷冻海水淡化与冰蓄冷相结合的新型系统。该系统利用过冷水进行制冰和离心后处理，利用淡化冰作为蓄冷介质，实现海水淡化和蓄冰一体化。与传统系统相比，拟议系统的总资本成本降低了 30%，投资回收期比传统系统（5.42 年）低 38.18%。此外，该系统在利用80%的蓄冰容量时表现出最佳的经济性能，投资回收期为3.38年，而利用20%的蓄冰容量时为7.62年。该系统在广东、福建、海南、法国等四个峰谷电价存在差异的地区的应用表明，该系统在电价差异较大的地区表现出更大的经济可行性。