热管理技术在紫外成像光谱仪热控制中的应用

Abstract

The characteristics of thermal control for an ultraviolet imaging spectrometer is researched, and it points out that the conventional thermal design method to establish radiating surface directly will bring some problems such as big radiator area and high electric power for heaters. Therefore, this paper proposes a new thermal design method to solve the problems above. On the basis of thermal management technology, the method collects and manages the heat generated by the inner source of a spectrometer in unification and integration, by which the radiator area is as small as possible and the electric power for heaters is reduced. Thermal design verification results for the ultraviolet imaging spectrometer show that the variation range of mean temperature and the maximal axial temperature difference are 18C-20C, and 1.0C-2.4C respectively at a low temperature condition. Moreover, those are 18C-24.5C and 1.2C-3.3C respectively at a high temperature condition. The experiments indicate that these results meet the thermal control demands of the ultraviolet imaging spectrometer. In conclusion, the management technique adopted in thermal control of the ultraviolet imaging spectrometer can effectively increase the energy efficiency and reduce the size of thermal control system, and can provide a reference for the thermal design of other space optical sensors.