高真空多层绝热温度场数值模拟研究  

Research on Numerical Simulation of High Vacuum Multilayer Adiabatic Temperature Field

作　　者：李延娜 邓育轩 匡春燕 徐菁 张艳丽 LI yan-na;DENG Yu-xuan;KUANG Chun-yan;XU Jing;ZHANG Yan-li(Bailie School of Petroleum Engineering,Lanzhou City University,Lanzhou 730070,China)

机构地区：[1]兰州城市学院培黎石油工程学院,兰州730070

出　　处：《西安文理学院学报（自然科学版）》2023年第1期4-8,共5页Journal of Xi’an University(Natural Science Edition)

摘　　要：基于逐层传热计算方法,计算高真空多层绝热传热量,进而确定高真空多层绝热综合导热系数.结果表明,外界环境温度越高,升高相同温度,高真空多层绝热传热量增加越多,综合导热系数增加越多;基于综合导热系数,进行高真空多层绝热温度场数值模拟研究.结果表明,越靠近冷端,绝热层中温度变化越大,温度降低越明显;越靠近热端,绝热层中温度变化越小,温度升高越微弱.Based on the layer by layer heat transfer calculation method,the heat transfer of high vacuum multilayer insulation is calculated,and then the comprehensive thermal conductivity of high vacuum multilayer insulation is determined.The results show that the higher the ambient temperature is,the higher the same temperature is,the more heat transfer and comprehensive thermal conductivity of high vacuum multilayer insulation increase.Based on the comprehensive thermal conductivity,the numerical simulation of the temperature field of high vacuum multilayer insulation is conducted.The results show that the closer to the cold end,the greater the temperature change in the insulation layer is,and the more obvious the temperature drops.The closer to the hot end,the smaller the temperature change in the insulation layer is,and the weaker the temperature rises.

关 键 词：高真空多层绝热 传热量 综合导热系数 数值模拟 温度分布 

分 类 号：TK124[动力工程及工程热物理—工程热物理]