Accurate Temperature Control Using Heat Pipes


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Abstract


The precise temperature control of heat generating instruments under varying heat loads and sink conditions is a highly challenging task in designing thermal control systems. For space missions with very narrow temperature range requirements, this task is further complicated. In this paper, accurate temperature control methods using two-phase heat exchange devices, heat pipes and loop heat pipes, are investigated. The temperature control methods with a flight heritage and at the development phase are both reviewed. Design guidelines are recommended to help selecting the optimum thermal control method. Due to the limited power available in space missions, the control heater power is considered as the main driving requirement. The other parameters taken into account include: passive operation, reliability, mass, complexity, and temperature stability
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Keywords


Heat Pipes; Loop Heat Pipes; Temperature Control; Two-Phase Heat Transfer

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