乳液浆体蓄冷性能实验研究  

Experimental Study on Cold Storage Performance of Emulsion Slurry

作　　者：李成浩[1] 孙志高[1] 张爱军[1] 王茂[1] 杨明明[1] 李翠敏[1] 李娟[1] 

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》2016年第6期66-70,78,共6页Journal of Refrigeration

基　　金：江苏省自然科学基金项目(BK2012602);江苏省研究生创新项目(KYLX15-1309);苏州科技大学研究生创新项目(SKCX15-027)资助~~

摘　　要：本文选用二甲基硅油作为油相,硅烷偶联剂作为添加剂制备了乳液浆体,利用混合量热法测试了二甲基硅油-水乳液浆体的含冰率与二甲基硅油、硅烷偶联剂添加量和温度间的关系。实验表明:在相同的相变结晶时间内,随着二甲基硅油质量分数的增加,乳液的冰点和含冰率降低。虽然硅烷偶联剂的添加降低了含冰率,但可以防止冰浆粘附容器壁面,改善了流动性。当添加的硅烷偶联剂和二甲基硅油质量分数分别为4%和10%,环境温度为-8.5℃,相变结晶时间为90 min时,制备的乳液浆体含冰率达到33.4%,浆体不粘附壁面,浆体颗粒分散均匀,具有良好的流动性。Dimethyl silicone oil and silane - coupler are chosen as oil phase and additive to form emulsion for slurry producing. The relation of Ice Packing Factor （IPF） and additive amount of dimethyl silicone oil and silane-coupler and environmental temperature was investigated using the mixing calorimetry method. The freezing point and the IPF of emulsion slurry are both reduced with the increase of dimethyl silicone oil mass fraction under the same crystallization time. Silane-coupler also reduces IPF, hut it can prevent ice fi＇om adhering to the cooling surface and improve fluidity. The experimental results show that IPF is about 33.4% after 90 min crystallization under - 8.5 ℃ temperature conditions when the mass fraction of dimethyl silicone oil and silane-coupler in emulsion are 4% and 10% , respectively. The slurry does not adhere to the cooling surface and is dispersed well. The slurry has a good fluidity.

关 键 词：浆体 乳液 相变 蓄冷 

分 类 号：TB34[一般工业技术—材料科学与工程] TK02[动力工程及工程热物理]