论文部分内容阅读
在月面-180℃~+90℃的极端高低温环境下,月面探测光学设备的月昼远距离散热和月夜保温矛盾异常突出。针对设备热耗的传输、排散,以及月夜生存时的热能存留问题,利用热管工质的汽、液、固相变特性,提出一种无源热开关热管作为设备和散热面间长距离传热手段,即依据设备温度指标选择具有合适凝固点和传热能力的工质,当月昼工作期间通过热管内工质两相传热实现热量的高效收集和传输,到月夜期间冻结热管内全部工质,完全切断热管与散热面间的两相传热,维持设备温度。地面试验和在轨飞行数据表明,热开关热管凝固点附近热导比达30以上。热管工作时,7℃传热能力大于15W,传热温差小于4℃,且能够适应着陆器±15°的倾斜,确保了嫦娥三号着陆器月基光学望远镜在轨的高性能工作。
In the lunar surface -80 ℃ ~ +90 ℃ under extreme high and low temperature environment, lunar surface lunar exploration and long-distance heat dissipation moonlit insulation exceptionally prominent contradictions. Aiming at the transmission and dissipation of heat loss of equipment and the problem of thermal energy retention during the moonlight night, a passive heat-transfer heat pipe is proposed as long-distance transmission between equipment and heat dissipation surface by utilizing vapor, liquid and solid phase change characteristics of heat medium. Hot means that according to the equipment temperature index select a suitable solidification point and the heat transfer capacity of the working substance during the day during the day through the heat pipe refrigerant two-phase heat transfer to achieve efficient collection and transmission of heat to the heat pipe to freeze all the working fluid within the moonlight, Completely cut off the heat transfer between the heat pipe and the two-phase heat transfer to maintain the device temperature. Ground tests and on-orbit flight data show that the heat conduction heat pipe near the freezing point of more than 30. Heat pipe work, 7 ℃ heat transfer capacity greater than 15W, heat transfer temperature is less than 4 ℃, and can adapt to ± 15 ° lander tilt to ensure that the Chang’e III lander moon-based optical telescope in orbit of high-performance work.