张磊, 沈苑, 祁见忠, 等. 基于热电制冷的某舱外载荷热控设计[J]. 航天器环境工程, 2023, 40(4): 380-386 DOI: 10.12126/see.2023008
引用本文: 张磊, 沈苑, 祁见忠, 等. 基于热电制冷的某舱外载荷热控设计[J]. 航天器环境工程, 2023, 40(4): 380-386 DOI: 10.12126/see.2023008
ZHANG L, SHEN Y, QI J Z, et al. Two-stage thermal control design of an extravehicular load based on TEC[J]. Spacecraft Environment Engineering, 2023, 40(4): 380-386 DOI: 10.12126/see.2023008
Citation: ZHANG L, SHEN Y, QI J Z, et al. Two-stage thermal control design of an extravehicular load based on TEC[J]. Spacecraft Environment Engineering, 2023, 40(4): 380-386 DOI: 10.12126/see.2023008

基于热电制冷的某舱外载荷两级控温设计

Two-stage thermal control design of an extravehicular load based on TEC

  • 摘要: 在某层叠式舱外载荷热控设计中,为同时满足整机散热以及部分模块组件高精度高稳定度温度控制需求,提出一种基于热电制冷(TEC)在上层模块侧壁营造相对较低温度环境(一级温控),再结合薄膜式电加热器对上层模块内部组件进行高温度稳定度控温(二级控温)的热控设计方案。该方案通过建立并有效控制上层模块与冷板之间唯一的传热路径,在实现上层模块高效散热的同时保证其内部约束点温度的高稳定性。通过仿真分析和热平衡试验对该热控方案进行验证,结果表明:当冷板来流温度在±5 ℃/90 min波动时,一级控温实现约束点温度波动小于±0.3 ℃/90 min,二级控温实现约束点温度波动小于±0.1 ℃/90 min,所有约束点温度满足指标要求。

     

    Abstract: In the thermal control design of a stacked extravehicular load, in order to meet the simultaneous requirements of heat dissipation of the whole machine as well as high-precision and high-stability thermol control of some module components, a thermal control design scheme based on thermo electric cooling (TEC) was proposed. It was to create a relatively low temperature environment on the side wall of the upper module, i.e. primary thermol control, while use a thin-film electric heater to control the temperature of internal components of the upper module with high stability, i.e. secondary thermol control. By establishing and effectively controlling the only heat transfer path between the upper module and the cold plate, efficient heat dissipation of the upper module and the high temperature stability for the internal constraint points are realized. The thermol control scheme was verified by simulation analysis and thermal balance test. The results show that, when the incoming flow temperature of the cold plate fluctuates between ±5 ℃/90 min, the primary and the secondary thermal control achieve temperature fluctuations less than ±0.3 ℃/90 min and ±0.1 ℃/90 min at constraint point, respectively. The temperatures of all constraint points satisfy the requirement of design index.

     

/

返回文章
返回