载人航天器辐射器面板布局对散热能力的影响分析  

Impact Analysis of Radiator Plate Layout of Manned Spacecraft on Heat Dissipation Potential

作　　者：靳健[1] 于文泽[1] 王宇宁[1] 

机构地区：[1]中国空间技术研究院载人航天总体部,北京100094

出　　处：《航天器工程》2016年第3期45-51,共7页Spacecraft Engineering

基　　金：国家重大科技专项工程

摘　　要：以载人航天器广泛采用的圆筒辐射器为研究对象,建立辐射器散热能力数学分析模型,对比分析集中式和分块式面板布局形式给辐射器散热能力带来的影响,对比的参数包括管路长度、液体工质流量和管路入口液体工质温度。计算结果表明:在辐射器面板面积和管路长度相同的前提下,管路长度和面板分块数的变化,会造成2类辐射器散热能力的显著差异,管路长度越短,面板分块数越多,集中式布局辐射器比分块式布局辐射器的散热能力越强,最大散热能力差异达到16.0%,最小散热能力差异为13.5%。液体工质流量和管路入口液体工质温度,对2类辐射器散热能力的差异影响较小,不超过2.0%。因此,辐射器设计时不应忽略面板布局对散热能力的影响,应尽可能集中布置辐射器面板。A mathematical analysis model of heat dissipation potential of cylinder radiator used in manned spacecraft is widely developed.Based on this model,the impacts of distributed and centralized plate layout on radiator heat dissipation potential are analyzed in terms of different parameters,including loop length,working liquid flux and working liquid temperature at loop entrance.According to the calculation results,with the same plate area and loop length,the loop length and sub-plate number can bring non-ignorable difference of heat dissipation potential between radiators with different layout.The shorter the loop length is or the more sub-plates are,the better the heat dissipation potential of radiator with centralized layout is,compared with that of radiator with distributed layout.The difference of maximum heat dissipation potential can be up to 16.0%,and the difference of minimum heat dissipation potential can be up to 13.5%.Working liquid flux and temperature at loop entrance have little impact on heat dissipation potential difference between radiators with different layout,making the difference less than2.0%.During radiator design,impact of plate layout on heat dissipation potential should not be neglected,and it is better to select centralized plate layout.

关 键 词：载人航天器辐射器 散热能力 流体回路 液体工质 

分 类 号：V444.3[航空宇航科学与技术—飞行器设计]