Which outcome occurs within a closed-loop heat pipe when localized overheating drastically reduces liquid surface tension?

💡 Explanation

When localized overheating reduces liquid surface tension, capillary action is disrupted because the meniscus cannot form properly within the wick, resulting in flow stagnation. Therefore complete cessation of fluid circulation/flow occurs, rather than capillary reversal, superheating, or increased boiling heat transfer which need maintaining flow / specific heat flux ranges.

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• Which consequence results when ultrasonic fuel injection deposits form in gasoline direct injection (GDI) engine injectors?
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