低温推进剂贮存中SOFI和MLI实验研究  

Experimental Study on SOFI and MLI For Cryogenic Propellant Storage

作　　者：郑建朋 陈六彪[1] 周远[1,2] 王俊杰 ZHENG Jian-Peng;CHEN Liu-Biao;ZHOU Yuan;WANG Jun-Jie(Chinese Academy of Sciences,Key Laboratory of Cryogenics,Technical Institute of Physics and Chemistry,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院低温工程学重点实验室(理化技术研究所),北京100190 [2]中国科学院大学,北京100049

出　　处：《工程热物理学报》2020年第3期543-547,共5页Journal of Engineering Thermophysics

基　　金：国家重点研发计划项目(No.2018YFB0504603);国家自然科学基金项目(No.51706233,No.51427806);中国科学院战略性先导科技专项(No.XDA15010400);中国科学院前沿科学重点研究计划(No.QYZDY-SSW-JSC028)。

摘　　要：根据低温推进剂长时间在轨贮存的要求,设计并搭建了绝热系统地面验证测试装置,对绝热系统的热力学性能进行测试。针对55L贮箱,采用了泡沫绝热(spray on foam insulation,SOFI)和多层绝热(multilayer insulation,MLI)结合的复合绝热系统,分别在高真空(5×10^-3Pa以上)和大气压条件下进行了验证实验(液氮作为替代工质)。贮箱外绝热系统为15m m厚泡沫绝热层和45组多层绝热时,高真空条件下液氮日蒸发率为0.77%,多层绝热层表观热导率为1.29×10^-4W/(m·K),据此折算为液氧时日蒸发率为0.55%。将高真空和大气压条件下的实验结果比较发现,泡沫绝热层所占热阻分别为总热阻的0.19%和45.14%。According to the requirement of long-term on-orbit storage of cryogenic propellant,a test bed to measure the thermodynamic properties of insulation system has been designed and built.Based on an aluminum tank(55L),the composite insulation system consisting of spray on foam insulation(SOFI)and multilayer insulation(MLI)was tested with liquid nitrogen under high vacuum and atmospheric pressure conditions.With insulation system of 15 mm SOFI and 45 layers MLI.The tested daily evaporation rate of liquid nitrogen is 0.77%under high vacuum condition,and the apparent thermal conductivity of multilayer insulation is 1.29×10^?4W/(m·K).The converted value of daily evaporation rate would be 0.55%for liquid oxygen.According to the experimental results,the thermal resistance of SOFI under high vacuum and atmospheric pressure is 0.19%and 45.14%,respectively.

关 键 词：喷涂泡沫绝热(SOFI) 多层绝热(MLI) 低温绝热 液氧 液氢 

分 类 号：TK123[动力工程及工程热物理—工程热物理]