Assessment of sintered wick heat pipe performance by modeling phase change in surface pores

Date

2024-4-16

Author

Yener, Şükrü Kaan

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With the advances in technology, managing thermal systems is becoming increasingly challenging. Due to their reliability, maintenance-free operation, and independence from external energy sources, heat pipes have found widespread use in the aerospace, and other electronics cooling industries. Modeling heat pipes before testing allows for time and labor savings by predicting system performance and limits. In this study, a model has been developed for fast and accurate determination of the thermal performance of sintered wick heat pipes. The model solves for liquid flow within the wick while assuming vapor to be at constant temperature and pressure. It considers the contribution of the shape of the interface resulting from the pressure difference between the vapor and liquid phases to the thermal resistance model. The model simplifies the voids on the liquid-vapor interface surfaces as sections of spheres with certain ratios which it can also be used as a design tool. The effect of pore radius on heat pipe performance and limits have been investigated.

Subject Keywords

Heat pipe modeling, Sintered wick heat pipes, Flow through porous medium, Two-phase flows

URI

https://hdl.handle.net/11511/109816

Collections

Graduate School of Natural and Applied Sciences, Thesis