Assessment of the effect of vapor flow on the thermal performance of a flat grooved heat pipe

Date

2023-6-19

Author

Derebaşı, Beste

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Flat grooved heat pipe (FGHP) is widely employed in various applications such as cooling components in electronics due to their high heat transfer capability and reliability. As electronic devices continue to evolve towards more compact designs, the demand for thinner FGHP is becoming thinner to provide compatible thermal management. This study extends a recently developed modeling tool by incorporating vapor flow and interfacial effects between the two phases of the working fluid in FGHP. The model is validated with varying vapor space thickness, resulting in an improved representation of the free surface geometry. The thermal performance of FGHP is evaluated by subjecting the model to different vapor space thicknesses. It is observed that reducing the vapor space thickness leads to a decrease in the maximum heat-carrying capacity of FGHP while enhancing the evaporation performance. Furthermore, experimental investigations are conducted to validate the numerical findings, involving varying filling ratios and heat loads for each vapor space thickness.

Subject Keywords

Heat pipe modeling, Evaporation enhancement, Flat-grooved heat pipes, Liquid-vapor flow interaction, Two-phase immiscible flows

URI

https://hdl.handle.net/11511/104477

Collections

Graduate School of Natural and Applied Sciences, Thesis