Passive Heat Transfer Devices
Passive heat transfer devices are systems that transfer heat without the use of external power sources. These devices rely on natural phenomena such as conduction, convection, and radiation to transfer heat from one location to another. In the context of space and astronautical engineering, passive heat transfer devices are used to regulate the temperature of spacecraft and their components. Examples of passive heat transfer devices include heat pipes, thermal radiators, and phase change materials. Heat pipes are sealed tubes that contain a working fluid, which evaporates at the hot end and condenses at the cold end, transferring heat in the process. Thermal radiators use large surface areas to radiate heat away from spacecraft, while phase change materials absorb and release heat as they change from solid to liquid and vice versa.
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