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针对激光、雷达等载荷空间应用中存在的超过100 W/cm~2高热流密度散热问题,采用泵驱两相流体回路结合金刚石微槽道的方法实现了271 W/cm~2热流密度的散热。对系统设计及关键部件设计进行了研究,整个系统经过地面和在轨飞行验证,运行平稳。利用储液器控温的方式,实现了系统温度的准确控制。测试结果表明,地面和在轨飞行期间的换热及流阻相当,验证了重力无关设计的正确性。
Aiming at the heat dissipation of over 100 W / cm ~ 2 high heat flux density in load space applications such as lasers and radar, a 271 W / cm ~ 2 heat flux density heat dissipation was achieved by using a pump-driven two-phase fluid circuit combined with a diamond microgroove . The design of the system and the design of the key components are studied. The whole system is validated by the ground and in-orbit flight and runs smoothly. The use of liquid storage temperature control, to achieve accurate control of the system temperature. The test results show that the heat transfer and flow resistance of the ground during on-orbit flight are equivalent, which proves the correctness of gravity independent design.