Document Type
Article
Publication Date
3-1-2024
Abstract
The aim of this study is to investigate the impact heater orientation and inlet conditions on heat transfer mechanisms during flow boiling, inside horizontally oriented rectangular channel using PF-5060. The experimental setup allows both upward and downward-facing single-sided heating configurations. Various inlet mass flux are examined, along with different levels of inlet subcooling. The impact of gravity is studied using flow visualization. During downward facing heating, vapor accumulates along the copper heater wall due to buoyancy effects resulting in notably low CHF and heat transfer values. In contrast, with upward facing heating, buoyancy assists in extraction of vapor from the copper heater wall, facilitating increased liquid contact and higher CHF and heat transfer values. CHF values begin to converge at high inlet mass flux for both orientations, which can be attributed to inertia dominating gravity. Inlet subcooling also influences CHF, with highly subcooled conditions yielding higher CHF. The impact of orientation and subcooled inlet on CHF and heat transfer coefficients are captured. Experimental CHF data was used to validate the Hydrodynamic Instability-Based Model for CHF prediction demonstrating a Mean Absolute Error of 10.8%. Effectively considering gravity forces, heated wall orientation, and flow regimes, the model demonstrates a proficiency in its comprehensive approach.
Keywords
heat trasfer, flow boiling, critical heat flux, gravivity, subcooled inlet
Language
English
Publication Title
International Communications in Heat and Mass Transfer
Grant
2138247
Rights
© The Author(s) 2024.This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/BY-NC-ND/4.0/), which permits non-commercial copying and redistribution of the material in any medium or format, provided the original work is not changed in any way and is properly cited.
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Recommended Citation
Shingote, Chinmay; Huang, Cho Ning; and Kharangate, Chirag, "Investigation of Flow Boiling Critical Heat Flux and Heat Transfer Within a Horizontally Oriented Channel with One-Sided Heating at Three Levels of Subcooled Inlet" (2024). Faculty Scholarship. 1100.
https://commons.case.edu/facultyworks/1100
Manuscript Version
Final Publisher Version