双蒸发器流化冰制冰机试验研究与分析

doi:10.11949/j.issn.0438-1157.20170949

摘要/Abstract

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

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

中图分类号:

TK11

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.

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.

参考文献 32

[1]	STAMATIOU E, MEEWISSE J W, KAWAJI M. Ice slurry generation involving moving parts[J]. International Journal of Refrigeration, 2005, 28(1):60-72.
[2]	WIKIPEDIA. Slurry Ice[EB/OL].[2017-07-10]. https://en.wikipedia.org/wiki/Slurry_ice.
[3]	王飞波, 王磊, 李敏霞, 等. 刮片式流化冰制冰机制冰特性研究[J]. 工程热物理学报, 2016, 37(8):1613-1619. WANG F B, WANG L, LI M X, et al. Study on characteristics of ice slurry generating for scraped surface ice slurry system[J].Journal of Engineering Thermophysics, 2016, 37(8):1613-1619.
[4]	MEEWISSE J W. Fluidized bed ice slurry generator for enhanced secondary cooling systems[D]. Delft:Delft University of Technology, 2004.
[5]	张鹏. 溶液动态制冰的理论和实验研究[D]. 杭州:浙江大学, 2006. ZHANG P. Investigation on dynamic ice slurry making system[D]. Hangzhou:Zhejiang University, 2006.
[6]	FUMOTO K, SATO T, KAWANAMI T, et al. Ice slurry generator using freezing-point depression by pressurization-case of low-concentration NaCl aqueous solution[J]. International Journal of Refrigeration, 2013, 36(3):795-800.
[7]	LEIPER A N, ASH D G, MCBRYDE D J, et al. Improving the thermal efficiency of ice slurry production through comminution[J]. International Journal of Refrigeration, 2012, 35(7):1931-1939.
[8]	LI Y, WANG S, WANG J, et al. CFD study of ice slurry heat transfer characteristics in a straight horizontal tube[J]. Procedia Engineering, 2016, 146:504-512.
[9]	KUMANO H, TAMURA F, SAWADA S, et al. Study on flow and heat transfer characteristics of ice slurry in the transition region[J]. International Journal of Refrigeration, 2013, 36(3):801-808.
[10]	HARUKI N, HORIBE A. Flow and heat transfer characteristics of ice slurries in a helically-coiled pipe[J]. International Journal of Refrigeration, 2013, 36(4):1285-1293.
[11]	KUMANO H, HIRATA T, HAGIWARA Y, et al. Effects of storage on flow and heat transfer characteristics of ice slurry[J]. International Journal of Refrigeration, 2012, 35(1):122-129.
[12]	FLICK D, DOURSAT C, LAKHDAR M B. Modelling and numerical simulation of ice slurry storage tank[J]. Computer Aided Chemical Engineering, 2007, 24(7):1169-1174.
[13]	BELLAS I, TASSOU S A. Present and future applications of ice slurries[J]. International Journal of Refrigeration, 2005, 28(1):115-121.
[14]	EGOLF P W, KAUFFELD M. From physical properties of ice slurries to industrial ice slurry applications[J]. International Journal of Refrigeration, 2005, 28(1):4-12.
[15]	GUILPART J, STAMATIOU E, FOURNAISON L. The control of ice slurry systems:an overview[J]. International Journal of Refrigeration, 2005, 28(1):98-107.
[16]	刘永红. 冰浆流动特性和传热性能的研究[D]. 上海:同济大学, 1997. LIU Y H. Study on flowing characteristics & heat transfer performance of ice slurry[D].Shanghai:Tongji University, 1997.
[17]	简夕忠. 二元冰浆流动与传热特性研究[D]. 南京:南京航空航天大学, 2008. JIAN X Z. A study of the flow and heat transfer characteristics of binary ice slurry[D]. Nanjing:Nanjing University of Aeronautics and Astronautics, 2008.
[18]	EGLOF P W, KITANOVSKI A, ATA-CAESAR D, et al. Thermodynamics and heat transfer of ice slurries[J]. International Journal of Refrigeration, 2005, 28(1):51-59.
[19]	YATAGHENE M, LEGRAND J. A 3D-CFD model thermal analysis within a scraped surface heat exchanger[J]. Computers & Fluids, 2013, 71:380-399.
[20]	HONG R Y, DONG L, SHANG D Y, et al. Experimental and numerical investigations of an ice-slurry generator[J]. The Chinese Journal of Process Engineering, 2004, 4(1):1-7.
[21]	QIN F G F, CHEN X D, RUSSELL A B. Heat transfer at the subcooled-scraped surface with/without phase change[J]. AIChE Journal, 2003, 49(8):1947-1955.
[22]	QIN F, CHEN X D, RAMACHANDRA S, et al. Heat transfer and power consumption in a scraped-surface heat exchanger while freezing aqueous solutions[J]. Separation and Purification Technology, 2006, 48(2):150-158.
[23]	QIN F G F, CHEN X D, FREE K. Freezing on subcooled surfaces, phenomena, modeling and applications[J]. International Journal of Heat and Mass Transfer, 2009, 52(5/6):1245-1253.
[24]	LAKHDAR M B, CERECERO R, ALVAREZ G, et al. Heat transfer with freezing in a scraped surface heat exchanger[J]. Applied Thermal Engineering, 2005, 25(1):45-60.
[25]	GUILPART J, STAMATIOU E, DELAHAYE A, et al. Comparison of the performance of different ice slurry types depending on the application temperature[J]. International Journal of Refrigeration, 2006, 29(5):781-788.
[26]	FAUCHEUX M, MULLER G, HAVET M, et al. Influence of surface roughness on the supercooling degree:case of selected water/ethanol solutions frozen on aluminum surfaces[J]. International Journal of Refrigeration, 2006, 29(7):1218-1224.
[27]	LEIPER A N, HAMMOND E C, ASH D G, et al. Energy conservation in ice slurry applications[J]. Applied Thermal Engineering, 2013, 51(1/2):1255-1262.
[28]	王欢. 流化冰制取特性研究与船舶柴油机余热回收流化冰制取系统设计[D]. 天津:天津大学, 2014. WANG H. The characteristic study of ice slurry making and ice-making system design with exhaust heat recovery for marine diesel[D]. Tianjin:Tianjin University, 2014.
[29]	MELINDER A, IGNATOWICZ M. Properties of seawater with ice slurry use in focus[J]. International Journal of Refrigeration, 2015, 52:51-58.
[30]	American Society of Heating, Refrigerating and Air-Conditioning Engineers. 2013 ASHRAE Handbook-Fundamentals (SI Edition)[M]. Atlanta:American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., 2014:1134.
[31]	施有林, 章学来, 涂淑平, 等. 二元冰蓄冷测试技术及其评价[J]. 实验流体力学, 2003, 17(4):62-67. SHI Y L, ZHANG X L, TU S P, et al. Ice slurry storage testing technology and its evaluation[J]. Experiments and Measurements in Fluid Mechanics, 2003, 17(4):62-67.
[32]	吕佳桐. 多孔扁管内低GWP工质及其混合工质冷凝换热特性的研究[D]. 天津:天津大学, 2015. LÜ J T. Research on condensation heat transfer characteristics of low-GWP refrigerants and the mixtures flowing in MPE tube[D]. Tianjin:Tianjin University, 2015.