Experimental Study on the Preparation of Binary Ice Crystals of Sodium Chloride Solution by Mechanical Scraping Method

Chen Erxiong; Chen Yongzhen; Lin Wenye; Wang Jiaying; Lu Wei; Qin Kun; Song Wenji; Feng Ziping; Sun Gang; Ge Changwei

doi:10.12465/issn.0253-4339.20260114001

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Experimental Study on the Preparation of Binary Ice Crystals of Sodium Chloride Solution by Mechanical Scraping Method

更新时间：2026-07-08

- Experimental Study on the Preparation of Binary Ice Crystals of Sodium Chloride Solution by Mechanical Scraping Method
- Journal of Refrigeration Pages: 1-10(2026)
- 作者机构：
  
  1.中国科学院广州能源研究所广州 510640
  2. 国网浙江省电力有限公司营销服务中心杭州 311121
  3. 冰轮环境技术股份有限公司烟台 264002
- 作者简介：
  
  Song Wenji，male， researcher， Ph. D. supervisor， Guangzhou Institute of Energy Conversion， Chinese Academy of Sciences， 86-13760621475， E-mail： songwj@ms.giec.ac.cn. Research fields： large-scale energy storage and control technology.
- 基金信息：
- DOI：10.12465/issn.0253-4339.20260114001
  CLC： TB657.5;TK02
- Revised：2026-02-09，
  
  Accepted：12 March 2026，
  
  Online First：07 July 2026，
- 稿件说明：
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陈二雄，陈永珍，林文野，等. 机械刮削式制备氯化钠溶液二元冰浆的实验研究［J］. 制冷学报，XXXX，XX（XX）：1-10.

Chen Erxiong，Chen Yongzhen，Lin Wenye，et al. Experimental Study on the Preparation of Binary Ice Crystals of Sodium Chloride Solution by Mechanical Scraping Method［J］. Journal of Refrigeration，XXXX，XX（XX）：1-10.
陈二雄，陈永珍，林文野，等. 机械刮削式制备氯化钠溶液二元冰浆的实验研究［J］. 制冷学报，XXXX，XX（XX）：1-10. DOI： 10.12465/issn.0253-4339.20260114001.

Chen Erxiong，Chen Yongzhen，Lin Wenye，et al. Experimental Study on the Preparation of Binary Ice Crystals of Sodium Chloride Solution by Mechanical Scraping Method［J］. Journal of Refrigeration，XXXX，XX（XX）：1-10. DOI： 10.12465/issn.0253-4339.20260114001.

摘要

为探究机械刮削式制冰系统中氯化钠溶液的制冰特性，本文以不同盐度的氯化钠溶液为研究对象，通过分析冰晶/冰浆物理特征、降温相变温度变化规律，系统研究了盐度对制冰系统动态性能的影响。结果表明：随着含盐量增加，冰晶微观形貌由片状逐步转变为颗粒状，粒径持续减小，冰水混合物的分离难度相应增大；溶液冰点随盐度升高而降低，且存在明显的过冷相变现象。当氯化钠溶液质量分数为3%、5%和6.5%时，溶液温度分别降至约-2、-4.3、-5.3 ℃后，会因液态水凝固释放相变潜热而突然升至-1.4、-3.6、-4.7 ℃，达到峰值后再次下降。基于实验数据拟合得到了氯化钠溶液冰点经验公式，该公式可准确反映溶液过冷态相变特性。本研究成果可为机械刮削式制冰技术的蒸发器优化设计、系统运行控制策略制定提供了重要理论依据与实践指导。

Abstract

Sodium chloride solutions with different salinities were used to investigate the ice-making characteristics of sodium chloride in a mechanical scraping-type ice-making system. The influences of salinity on the dynamic performance of the ice-making system were systematically studied by analyzing the physical characteristics of ice crystals/ice slurry and the temperature variation law during the cooling phase transition. The results show that the microscopic morphology of ice crystals gradually transforms from flaky to granular as a function of salt content， the particle size continuously decreases， the separation difficulty of the ice-water mixture increases， the freezing point of solution decreases as a function of salinity， and there is an obvious supercooling phase-transition phenomenon. When the mass fractions of the sodium chloride solution are 3%， 5%， and 6.5%， the solution temperatures decrease to approximately -2 ℃， -4.3 ℃， and， -5.3 ℃ respectively， then suddenly increase to -1.4 ℃， -3.6 ℃， and -4.7 ℃ because of the release of phase-change latent heat during the solidification of liquid water， and decrease again after reaching the peak. An empirical formula for the freezing point of the NaCl solution was fitted based on the experimental data， which accurately reflected the phase-transition characteristics of the solution at the supercooling state. The results provide an important theoretical basis and practical guidance for the optimal design of evaporators and the formulation of system operation control strategies for mechanical scraping-type ice-making technology.

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