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作 者:WANG ZiHan HE ChenBo HU Yang TANG GuiHua
出 处:《Science China(Technological Sciences)》2024年第8期2387-2404,共18页中国科学(技术科学英文版)
基 金:supported by the National Key Research and Development Program of China (Grant No. 2022YFC2204302);the National Natural Science Foundation of China (Grant No. 52130604)。
摘 要:High-stability thermal management is critical for the measurements of high sensitivity for temperature, but also challenging because any small thermal disturbances could lead to unacceptable temperature fluctuations. The present work delivers a design for passive temperature control, customized for a component in the satellites for gravitational wave detection. A novel sandwichlike structure is proposed with the configurations of proper materials, consisting of a layer of insulation material and two layers of nanocomposite phase change materials, bringing an integration of heat insulation and absorption/storage. Its performance is examined using an improved thermal network model and the revised transfer function method(TFM). The basic results of the two methods are validated by present COMSOL simulations and available numerical and experimental data in the literature. An effective reduction of temperature fluctuation is achieved to the scale of 0.1 K, even under two thermal disturbances from different directions: a radiative heat flux of 20 W m~(-2)(inside) and a temperature fluctuation of about 20 K(outside). Moreover,the TFM is employed to analyze the effects of the frequency of thermal disturbance: excellent damping performance is obtained for over 3.2 mHz and the underlying mechanism is discussed. Overall, the present design is expected to be combined with active temperature control to explore more possible ways for temperature control with higher stability.
关 键 词:temperature control sandwich insulation structure phase change material thermal network model transfer function method
分 类 号:V423.4[航空宇航科学与技术—飞行器设计] TB34[一般工业技术—材料科学与工程]
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