表面活性剂对船舶余热回收材料过冷度的影响  

Effect of surfactants on the supercooling of ship waste heat recovery materials

作　　者：王天任 罗孝学 王强强 汪永杰 Wang Tianren;Luo Xiaoxue;Wang Qiangqiang;Wang Yongjie(School of Mechanical and Naval Architecture,Beibu Gulf University,Qinzhou 535011,Guangxi,China)

机构地区：[1]北部湾大学机械与船舶海洋工程学院,广西钦州535011

出　　处：《船电技术》2024年第11期38-42,47,共6页Marine Electric & Electronic Engineering

摘　　要：现代船舶主机在工作过程中会产生大量余热,相变材料可以回收并储存这些余热用于其他地方。通过向Ba(OH)_(2)·8H_(2)O相变材料添加纳米二氧化钛可以改善其性能并适合用于船舶废气的余热回收,然而小粒径的纳米材料容易发生聚集现象,需要搭配表面活性剂使用来达到分散的效果。采用纳米材料与表面活性剂2:1的质量分数比,通过对添加了不同质量分数的纳米材料与表面活性剂样品进行步冷实验观察其过冷现象。结果表明,在添加了1%质量分数纳米二氧化钛的Ba(OH)_(2)·8H_(2)O相变材料中,同时添加0.25%质量分数SDBS和0.25%质量分数Triton X-100可以大幅改善其过冷现象,并使相变时间增长。The properties of Ba(OH)_(2)·8H_(2)O can be improved by adding nano-titanium dioxide,it is also suitable for waste heat recovery of ship exhaust gas,but nanomaterials with small particle size are prone to aggregation and need to be used with surfactants to achieve the dispersion effect.The 2:1 mass fraction ratio of nanomaterials and surfactants is used to make samples of nanomaterials and surfactants with different mass fractions to observe their supercooling phenomenon..The results show that the supercooling phenomenon can be greatly improved and the phase transition time can be increased by adding 0.25%SDBS and 0.25%Triton X-100 in Ba(OH)_(2)·8H_(2)O phase change materials with 1%mass fraction of titanium dioxide nanometers.

关 键 词：八水氢氧化钡 纳米二氧化钛 表面活性剂 过冷 余热回收 

分 类 号：TK02[动力工程及工程热物理]