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为保证高空光学遥感器CCD组件所需的温度水平,利用石蜡类材料的相变储热特性,设计了一种相变热控方案。分析了相变热控中封装容器及导热增强体材料。利用热平衡方程,计算了相变材料用量,设计了封装容器及导热增强体。通过CCD组件热试验测试了热控方案的热控效果。结果表明:在CCD组件连续工作2 h情况下,未采用相变热控方案的CCD组件温度范围为18～41.4℃,而采用相变热控方案的温度范围为18～28℃,满足热控指标要求。该相变热控已成功应用于某高空光学遥感器,可以作为其他航空光学遥感器CCD组件热控设计的参考。
In order to ensure the required temperature of the CCD optical remote sensing module, a phase-change thermal control scheme was designed by using the phase-change thermal storage characteristics of paraffin-based materials. Analysis of the phase change thermal control in the packaging container and thermal conductivity enhancer material. Using the heat balance equation, the amount of phase change material was calculated, and the packaging container and thermal conductivity enhancer were designed. The thermal control effect of the thermal control scheme was tested by the CCD module thermal test. The results show that the temperature range of the CCD module without using the phase change thermal control scheme is 18 ~ 41.4 ℃ when the CCD module works continuously for 2 hours, while the temperature range of the phase change thermal control scheme is 18 ~ 28 ℃, which meets the requirements of thermal control Indicator requirements. The phase change thermal control has been successfully applied to a high altitude optical remote sensor, which can be used as a reference for thermal control design of other aviation optical remote sensor CCD components.