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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
SATURATION BOILING OF HFE-7100 ON COPPER SURFACES: BUBBLE DEPARTURE DIAMETER AND BUBBLE FREQUENCY
Submission Author:
Isabela Ignacio da Silva , SP , Brazil
Co-Authors:
Isabela Ignacio da Silva, Bruno de Andrade, Leonardo Manetti, Jeferson Diehl de Oliveira, Elaine Maria Cardoso
Presenter: Isabela Ignacio da Silva
doi://10.26678/ABCM.ENCIT2020.CIT20-0204
Abstract
The growing demand for techniques that optimize the heat transfer process, especially those involving phase change, makes it necessary to understand the dynamics of the vapor bubble in the boiling process. Thus, this study aims to analyze the bubble dynamics for pool boiling of HFE-7100 (at saturated conditions) on a plain copper surface. Experimental tests were performed and recorded to visualize the bubble dynamics. The analysis of the vapor bubble departure diameter and vapor bubble frequency was done by using a tracking method software. The results obtained were compared with those present in the literature. We found that the experimental data are in agreement with the theoretical models of Fritz (1935) and Phan et al. (2010) for the bubble departure diameter, and Zuber (1963) and Jakob and Fritz (1931) for the bubble frequency.
Keywords
bubble departure diameter, bubble frequency, heating surface, pool boiling
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