Test and analysis of fluidized ice machine with dual evaporator

doi:10.11949/j.issn.0438-1157.20170949

Abstract

Abstract:

The theoretical cycle of the fluidized ice making machine under the chilling mode and ice making mode was analyzed. It is found that the traditional single evaporator (ice slurry generator) based on the ice making mode couldn't match the performance of the compressor, resulting in lower efficiency of chilling mode, the dual evaporators were proposed to optimize the fluidized ice making machine. The performance of the ice making machine with single and dual evaporators was tested under different ice making solution flow rate. The results showed that the ice cooling rate increased by 34% and 56%, and the coefficient of performance increased by 9% and 54% with dual evaporators under 2000 L·h^-1 and 2500 L·h^-1 respectively when compared with the single evaporator fluidized ice making machine. The efficiency of ice making machine was enhanced during the process from a normal temperature to a rated concentration of fluidized ice. The cooling rate and coefficient of performance were improved much more, especially in the case of larger flow rate of the ice making solution. It is proved that the fluidized ice making machine got optimized and the efficiency of ice making process was enhanced with dual evaporators.

Key words: fluidized ice, ice making machine, dual evaporator, measurement, optimization, design

摘要：

分析了流化冰制冰机在制冰溶液预冷工况与制冰工况下的理论循环，发现传统的基于制冰工况设计的单蒸发器（冰晶器）在制冰溶液预冷工况下，不能很好匹配压缩机性能，导致制冰溶液预冷工况效能低，为此提出了双蒸发器的优化方案。对单、双蒸发器机组在不同的制冰溶液流量下进行了性能试验，结果表明采用双蒸发器的制冰机在制冰溶液流量为2000 L·h^-1与2500 L·h^-1情况下，制冰溶液从9.5℃降温至0℃的速度较单蒸发器提高了34%与56%，制冷系数提高了9%与54%，同时改善了从常温到制取流化冰全过程的制冰效率。研究发现在制冰溶液流量较大的情况下，采用双蒸发器时制冰溶液预冷工况降温速度及制冷系数提高更多，优化效果更好。

关键词: 流化冰, 制冰机, 双蒸发器, 测量, 优化, 设计

CLC Number:

TK11

WANG Zepu, WANG Feibo, LI Minxia, MA Yitai. Test and analysis of fluidized ice machine with dual evaporator[J]. CIESC Journal, 2018, 69(4): 1656-1662.

王泽普, 王飞波, 李敏霞, 马一太. 双蒸发器流化冰制冰机试验研究与分析[J]. 化工学报, 2018, 69(4): 1656-1662.

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