摘要
针对冷链物流用蓄冷材料的应用需求,以甲酸钠(CHNaO_2)水溶液为基液材料,通过无机物KNO_3的添加,研制得到一种复合蓄冷材料。该材料有效调节了有机基液材料的相变温度,并增加了材料的导热系数。实验结果表明,当KNO_3的添加质量百分比为11%时,复合材料表现出良好的热物性能:相变温度-18.002 oC,相变潜热279.1 k J/kg,导热系数1.182 W/(m·K)。相较原有机溶液,相变温度降低了3.172 oC,导热系数提高了16.4%,同时相变潜热也提高了9.8%。
By using sodium formate （CHNaO2） aqueous solution as base material and adding inorganic KNO3, a composite cool storage material suitable for refrigerated transport is developed. The composite of organic and inorganic materials effectively adjust the phase transition temperature of the organic solution, and increase the coefficient of thermal conductivity of materials. Experiments show that when the additive amount of KNO3 is 11%, the composite material shows good thermal performance. The phase transition temperature, phase change latent heat and coefficient of thermal conductivity are -18.002℃, 279.1 kJ/kg and 1.182 W/（m·K）, respectively. Compared with the original organic solution, the phase transition temperature decreases 3.172℃, the coefficient of thermal conductivity increases by 16.4%, and the phase change latent heat also increases by 9.8%.
出处
《制冷技术》
2016年第2期12-15,共4页
Chinese Journal of Refrigeration Technology
基金
"十二五"农村领域国家科技支撑计划课题:新型蓄冷保温技术与设备(No.2013BAD19B01)
关键词
蓄冷材料
冷冻运输
凝固点降低定律
导热性能
Cool storage material
Refrigerated transport
Laws of lower freezing point
Thermal conductivity
