Abstract: Toimprovethetemperaturecontrolreliabilityofspacecraftthermalcontrolsystem,aselfadaptiontemperaturecontrolcoldplatewasdesignedbasedonthevolumechangecharacteristicsoftheparaffinwaxduetothephasechangeasitstemperaturechanged.Thedesignmodeloftheselfadaptiontemperaturecontrolcoldplatewasbuilt,andthethermalnetmodelofthesinglephasefluidloopwiththecoolplatewasgiven.Theperformanceofthecoldplateandthesinglephasefluidloopwasanalyzed.Resultsshowthatthecoldplatedesignedhastheabilityofselfadaptiontemperaturecontrol,anditmaybewidelyusedinthetemperaturecontrolfortheelectronicdevicesatgroundandheatloadsonspacecraft.

Key words: Selfadaptiontemperaturecontrol, Thermalcontrol, Sensitiveparaffinwax, Coldplate;Spacecraft