热负荷对R141b热力学排气系统自增压特性及排气损失的影响  

Effect on self-pressurization characteristics and mass loss of thermodynamic vent system for refrigerant R141b by heat load

作　　者：陈忠灿 黄永华[1] 汪彬[1] 李鹏 孙培杰 王天祥 崔佳勋 

机构地区：[1]上海交通大学制冷与低温工程研究所,上海200240 [2]上海宇航系统工程研究所,上海201108 [3]航天低温推进剂技术国家重点实验室,北京100028

出　　处：《化工学报》2016年第10期4047-4054,共8页CIESC Journal

基　　金：航天低温推进剂技术国家重点实验室基金项目(SKLTSCP1206-W)~~

摘　　要：为了研究低温推进剂在轨贮存技术所涉及的基本科学问题,在以R141b为气液相变储存介质的室温温区热力学排气系统(TVS)模拟装置上,进行了"漏热"功率分别为120、160和200 W的储箱压力控制实验研究。获得了TVS作用下的储箱增压特性,3种热负荷下自增压速率分别为6.43、12.92和18.05 k Pa·h?1。将采用TVS方法与定期直接放空法控制储箱压力产生的工质损失进行了对比,以其中热负荷120 W工况为例,采用TVS方法可减少工质损失79.3%。若是处于气液不分离的在轨微重力环境中,以直接放空时气体中夹带40%液体计,采用TVS方法可减少工质损失84.7%,验证了TVS方法在控制储箱压力方面的优越性。In order to study the fundamental problems involved in the storage of cryogens in space, the experimental investigation of tank pressure control was carried out on a simulator of thermodynamic vent system（TVS）, which works at room temperature with refrigerant R141 b as working fluid. The pressure control characteristics were obtained at heat load of 120, 160 and 200 W. The test results showed that the self-pressurization rate were 6.43, 12.92 and 18.05 k Pa·h-1 respectively at those three different heat load. Mass loss as a result of tank pressure control was compared between TVS method and direct gas vent method. Taking the heat load of 120 W as an example, the mass loss can be reduced by 79.3%. Assuming the mixture vented directly at zero-gravity containing 40% liquid, the TVS method can reduce the mass loss even by up to 84.7%. It was proved that the TVS method cannot only control the tank pressure but also significantly reduce the loss of the storage fluid.

关 键 词：R141B 热力学 压力控制 传热 相变 

分 类 号：V511.6[航空宇航科学与技术—航空宇航推进理论与工程]