大豆油微乳液冰浆融化与储存特性  

Melting and Storage Characteristics of Soybean Oil Microemulsion Ice Slurry

作　　者：吴欣 孙志高[1] Wu Xin;Sun Zhigao(School of Environment Science and Engineering,Suzhou University of Science and Technology,Suzhou,215009,China)

机构地区：[1]苏州科技大学环境科学与工程学院,苏州215009

出　　处：《制冷学报》2024年第5期152-158,共7页Journal of Refrigeration

摘　　要：冰浆热容量大,传热效果好,是一种良好的蓄冷介质。选择大豆油作为油相,复配Tween-80和AEO-3为表面活性剂,戊醇为助表面活性剂,用加水法制备了微乳液,实验考察了油相与表面活性剂的质量比、表面活性剂的亲水亲油平衡值(HLB值)、表面活性剂和助表面活性剂的质量比(Km值)对微乳液增溶水量的影响,筛选出油相与表面活性剂的质量比为1∶4、Tween-80与AEO-3的质量比为6∶4(HLB值为11.6)、Km值为2∶1为微乳液制备的最佳配比,选择该配比下含水量为50%的微乳液制备了冰浆。利用显微镜研究了冰晶融化过程,分析冰晶粒径对融化过程的影响。冰晶粒径随着融化时间增加逐渐变小,大粒径冰晶颗粒融化所需时间比小粒径的多。利用蓄冰1 h和蓄冰2 h的微乳液冰浆在不同储存时间的冰晶图像分析了储存时间和含冰率对冰晶粒径分布及冰晶平均粒径的影响,在相同含冰率下,储存时间越长,冰晶粒径越大,但冰晶数量减少,含冰率不变。在相同的储存时间内,含冰率越高,冰晶颗粒粒径增长速度越快。Ice slurry is a good cold storage medium with a large heat capacity and efficient heat transfer properties.In this study,a microemulsion was prepared with the addition of water,soybean oil as the oil phase,Tween-80 and AEO-3 as surfactants,and amyl alcohol as co-surfactants.The effects of the mass ratio of the oil phase to surfactant,hydrophilic and oleophilic balance of the surfactant(HLB value),and mass ratio of the surfactant to co-surfactant(Km value)on the water solubility of the microemulsion were investigated.A 1∶4 mass ratio of oil phase to surfactant,a 6∶4 mass ratio of Tween-80 to AEO-3(HLB value of 11.6),and a 2∶1 Km value were the best ratios for the preparation of the microemulsion.An ice slurry was prepared by selecting the microemulsion with 50%water content under the above mass ratios.The influence of ice crystal particle size on the melting process of the ice slurry was studied using ice crystal melting images.The grain size of the ice crystals gradually decreased with increasing melting time.The melting time of the ice crystal particles with large grain size was greater than that of the particles with small grain size.The effects of storage time and ice content on the grain size distribution and average grain size of the ice crystals were analyzed using ice crystal images of the microemulsion ice slurry stored for 1 h and 2 h.The longer the storage time,the larger the grain size of the ice crystals.The number of ice crystals decreased while the ice percentage factor did not change.For the same storage time,the higher the ice content,the faster the growth rate of the ice crystal particle size.

关 键 词：微乳液 冰浆 融化 储存 含冰率 大豆油 

分 类 号：TB64[一般工业技术—制冷工程] TB611[动力工程及工程热物理] TK02