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On the effect of corrugated conical frustum on pool boiling heat transfer

Ashouri, M ; Sharif University of Technology | 2022

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  1. Type of Document: Article
  2. DOI: 10.1016/j.expthermflusci.2021.110494
  3. Publisher: Elsevier Inc , 2022
  4. Abstract:
  5. Pool boiling heat transfer as a promising heat transfer mechanism that can provide ample heat dissipation for thermal management applications has been granted much attention. This study puts forward the idea of applying an Inner Corrugated Hollow Conical Frustum (ICHCF) to ameliorate pool boiling heat transfer. The performance of the ICHCF is experimentally investigated for both the stationary and rotating cases. Furthermore, the effect of various geometrical parameters such as the ICHCF height, thread depth, thread pitch, the gap between the ICHCF and boiling surface, and the rotational speed of the ICHCF are studied. Twelve different ICHCFs were fabricated and tested for the purpose of this study. The obtained results demonstrated that increasing the ICHCF height enhances the pool boiling heat transfer coefficient (PBHTC). It was also observed that there is an optimum distance between the conical frustum and the boiling surface. The results also revealed that using smaller pitches and higher thread depths can further improve the PBHTC. The PBHTC enhancement of up to 19.8 % in stationary and 1302 % in rotating modes was obtained compared to a plain surface. © 2021 Elsevier Inc
  6. Keywords:
  7. Bubble separation ; Conical frustum ; Heat transfer enhancement ; Pool boiling ; Rotational speed ; Geometry ; Boiling surfaces ; Conical frusta ; Heat transfer mechanism ; Plain surfaces ; Pool boiling heat transfer ; Thermal management applications ; Heat transfer
  8. Source: Experimental Thermal and Fluid Science ; Volume 130 , 2022 ; 08941777 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0894177721001394