摘要
为减少高空光学遥感器内部光机结构与高空外界环境的热交换,同时为主动热控创造有利条件,对应用于高空光学遥感器温控舱内侧的隔热材料进行了研究。首先根据高空光学遥感器的热控需求,确定了隔热材料应具备的特性;其次根据传热学原理,分析了传热热阻与材料厚度之间的关系,结合重量要求,确定了隔热材料厚度为9.5mm;最后针对该光学遥感器进行了热仿真分析。分析结果表明,包裹隔热材料后的温控舱内侧温度下降速度比无隔热材料时明显减小,2h后温度相比提升了20.9℃;内部光机结构2h后温度提升了4.5℃,有效减少了内部光机结构与外界环境的热交换。
In order to reduce the heat exchange between internal optical-mechanical structure and external environment and create favorable conditions for active thermal control, the insulation material applied to inner side of temperature control assembly was studied. Firstly, according to the thermal control requirements of altitude optical sensor, the characteristics of insulation material was analyzed. Then, based on principles of heat transfer, the relation between thermal resistance and the material thickness was analyzed, and the thickness of the insulation material is 9.5mm with the requirement of weight. Finally, the thermal simulation analysis of altitude optical sensor was carried out. The results show that: the temperature of inner side of temperature control assembly which wrapping the insulation material dropped slower than the case without insulation material, and two hours later the temperature of inner side of temperature control assembly had increased 20.9℃, and the temperature of internal optical-mechanical structure had increased 4.5℃.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2013年第S1期44-47,共4页
Chinese Journal of Scientific Instrument
关键词
隔热材料
光学遥感器
传热热阻
热分析
insulation material
optical sensor
transfer thermal resistance
thermal analyze
