Experimental Study on Ice Slurry System Based on Modular Super-cooling Releasing Device
Dynamic ice-making technologies with super-cooled water can produce ice slurry efficiently; however, the prominent problem in the stability of this method is that ice blocking easily takes place in the super-cooling heat exchanger. This study developed a dynamic ice-making system based on a modular...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Refrigeration Magazines Agency Co., Ltd.
2020-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2020.02.056 |
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| Summary: | Dynamic ice-making technologies with super-cooled water can produce ice slurry efficiently; however, the prominent problem in the stability of this method is that ice blocking easily takes place in the super-cooling heat exchanger. This study developed a dynamic ice-making system based on a modular super-cooling releasing device which was set inside a super-cooled heat exchanger. Its main structure are dismountable spiral blades that can release super-cooled state of solutions and scrape the ice on the heat transfer surface. The performance test of the ice making system under different working conditions shows that the ice making system can stably produce ice slurry and effectively improve the ice-blocking problem. The highest ice packing fraction reached 9.1%, the maximum continuous ice making time was up to 521 s. The ice packing fraction increases with the continuous ice-making time. When the mass fraction of sodium chloride solution was 6%, the ice packing fraction and continuous ice-making time were significantly improved. The experiment obtained the optimal operating parameters of the ice making system: the flow rate of the ice making solution is 0.50 m3/h, the secondary refrigerant temperature is ﹣15 ℃, and the rotating speed of the spiral blades is between 175~225 r/min. |
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| ISSN: | 0253-4339 |