水溶类水合物蓄冷实验研究  

Experimental Study on Cold Storage Performance of Water-soluble Hydrate

作　　者：何雨柯 许波[1] 陈鹏 吕钟灵 陈振乾[1] HE Yuke;XU Bo;CHEN Peng;LYU Zhongling;CHEN Zhenqian(School of Energy and Environment,Southeast University,Nanjing 210096,Jiangsu,China;China Design Group Co.,Ltd.,Nanjing 210014,Jiangsu,China)

机构地区：[1]东南大学能源与环境学院,江苏南京210096 [2]华设设计集团股份有限公司,江苏南京210014

出　　处：《制冷技术》2023年第4期33-39,共7页Chinese Journal of Refrigeration Technology

基　　金：华设设计集团股份有限公司开放基金(No.8503008464)。

摘　　要：本文通过实验研究了水溶类水合物四丁基溴化铵(TBAB)、四丁基氟化铵(TBAF)和四氢呋喃(THF)的相变特性。结果表明,混合两种工质作为蓄冷介质,可以克服单一工质相变温度偏低(THF)或相变潜热偏低(TBAB和TBAF)的缺点。表面活性剂十二烷基硫酸钠(SDS)和十二烷基苯磺酸钠(SDBS)均可以缩短水合物的诱导时间,减小过冷度。相对而言,SDS的强化效果更为显著。当TBAF+THF水合物的质量分数为35%(mTBAF=60%、mSDS=0.5%)时蓄冷效果最好,相变温度6.8℃,诱导时间4.9 min,过冷度3.3℃,相变潜热213.3 kJ/kg,是具有发展前景的蓄冷介质。An experimental study is presented on the formation behavior of single and binary water-soluble hydrates of tetra-n-butylammonium bromide(TBAB),tetra-n-butylammonium fluoride(TBAF)and Tetrahydrofuran(THF).The results show that binary hydrates can overcome the disadvantages of low phase change temperature(THF)or low latent heat(TBAB,TBAF).Furthermore,surfactants like sodium dodecyl sulfate(SDS)and sodium dodecyl benzene sulfonate(SDBS)are examined to be helpful to decrease the induction time and alleviate the supercooling degree of the hydrates.Relatively,the effect of SDS is better.The optimal mass fraction of TBAF+THF hydrate is 35%(mTBAF=60%,mSDS=0.5%).The phase change parameters of the hydrate are as follows:the phase change temperature is 6.8℃,the induction time is 4.9 min,the supercooling degree is 3.3℃and the latent heat is 213.3 kJ/kg.The hydrate is proved to be promising material for cold storage.

关 键 词：相变 水合物 表面活性剂 蓄冷技术 水溶类水合物 

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