What is it about?

We present several engineering configurations that can be used to cool down hardware under vacuum conditions. The cooling is done for the purpose of qualification for space missions. We present possible cooling methods for radiative cooling. We show that proper optical encapsulation of the hardware is necessary to effectively reduce the temperatures of the hardware. We show that the required cooling power, due to radiation from the vacuum chamber walls, may reach hundreds of watts. We demonstrate that if the hardware generates heat higher than several watts the cooling device is not necessary and the hardware temperature is dictated mainly by the power it generates.

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Why is it important?

We demonstrate that reducing hardware temperatures, using radiation cooling, for the purpose of space qualification, is achievable. We present a short survey of radiative cooling devices. We demonstrate that once the specimen generates heat its temperature is indifferent to whether its surroundings is d radiatively cooled or not (from 300 K).

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This page is a summary of: Design and analysis of a radiation cooling system for hollow cathode testing, Applied Thermal Engineering, February 2017, Elsevier,
DOI: 10.1016/j.applthermaleng.2016.10.079.
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