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Towards All-Solid-State Heat Pipes

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Towards All-Solid-State Heat Pipes

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  • Author: Dr. Deyu Li
Heat pipes, with an equivalent thermal conductivity ranging from 1,000 to 100,000 W/m-K, are critical in the thermal management of space vehicles. However, various limitations associated with the phase change and two-phase transport process in heat pipes render reliability issues, and tremendous efforts have been devoted to the design and operation of heat pipes in space.1 Therefore, it would be extremely desirable to create an all-solid-state alternative, which might seem impossible given that the highest thermal conductivity of solids we have found so far only provides a maximum thermal conductivity of ~3,000 W/m-K at room temperature.

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