乳酸钙复合相变蓄冷材料的制备及性能研究  

Preparation and Performance Study of Calcium Lactate Composite Phase Change Cold Storage Material

作　　者：刘笛 何少勇 董月霞 盛金飞 李晓凤 孙志利 刘娥玉[4] 金蕊 王允直 刘浩威 李蕾 胡佳乐[3] Liu Di;He Shaoyong;Dong Yuexia;Sheng Jinfei;Li Xiaofeng;Sun Zhili;Liu Eyu;Jin Rui;Wang Yunzhi;Liu Haowei;Li Lei;Hu Jiale(Hebei University of Science and Technology,Shijiazhuang,050091,China;Hangzhou Kelly Stainless Steel Kitchen Equipment Co.,Hangzhou,310018,China;Tianjin University of Commerce,Tianjin,300134,China;Western Airport Group Qinghai Airport Co.,Xining,810007,China)

机构地区：[1]河北科技大学,石家庄050091 [2]杭州凯利不锈钢厨房设备有限公司,杭州310018 [3]天津商业大学,天津300134 [4]西部机场集团青海机场有限公司,西宁810007

出　　处：《冷藏技术》2024年第2期28-34,共7页Journal of Refrigeration Technology

基　　金：于田县葡萄深加工装备的关键技术研究与应用示范(编号:22ZYCGSN00030)。

摘　　要：为满足葡萄微冻贮藏保鲜温度的要求,研制了一种以乳酸钙水溶液为主储能剂,氯化铵水溶液为降温剂,高吸水树脂为增稠剂的复合相变蓄冷材料,测试蓄冷材料的相变温度、相变潜热、腐蚀性、导热性和稳定性。结果表明:当乳酸钙质量分数为1%,氯化铵质量分数为1%,高吸水树脂质量分数为2.2%时,复合相变蓄冷材料Onset温度为-4.45℃,相变潜热为300.8 J/g,导热系数为4.671 W/(m.K)。铜和铁在相变蓄冷材料中基本无腐蚀,复合相变蓄冷材料经过50次冻融循环后,性能稳定。In order to meet the requirements of grape micro frozen storage and preservation temperature,a composite phase change cold storage material with calcium lactate aqueous solution as the main energy storage agent,ammonium chloride aqueous solution as the cooling agent,and high water-absorbent resin as the thickening agent was developed,and the phase change temperature,latent heat of the phase change,corrosion,thermal conductivity,and stability of the cold storage material were tested.The results show that when the mass fraction of calcium lactate is 1%,the mass fraction of ammonium chloride is 1% and the mass fraction of high water-absorbent resin is 2.2%,Composite phase change cold storage material Onset temperature is -4.45℃,the latent heat of the phase change is 300.8 J/g and the thermal conductivity is 4.671 W/(m.K).Brass and iron are basically non-corrosive in the phase change cold storage material,and the performance of the composite phase change cold storage material is stable after 50 freeze-thaw cycles.

关 键 词：蓄冷材料 乳酸钙 相变潜热 导热系数 

分 类 号：TB34[一般工业技术—材料科学与工程]