Research Article | OPEN ACCESS
Calculation of Active Nucleation Site Density in Boiling Systems
1Boqi Xiao, 2Guoping Jiang, 1Dongmei Zheng, 1Lingxia Chen and 1Bingyang Liu
1Department of Physics and Electromechanical Engineering, Sanming
University, Sanming 365004, China
2Earthquake Engineering Research Test Center, Guangzhou University, Guangzhou 510405, China
Research Journal of Applied Sciences, Engineering and Technology 2013 4:587-592
Received: August 24, 2012 | Accepted: September 24, 2012 | Published: June 20, 2013
Abstract
In this study, realizing the significant of active nucleation site as an important parameter for predicting heat transfer, the formula of calculating active nucleation site density is given by taking into account the statistical property of active nucleation site on boiling surfaces. In the present approach, the proposed model is explicitly related to the contact angle and wall superheat. It is found that the total number of nucleation sites increases with increasing of the wall superheat. This model contains less empirical constants than the conventional correlations. No additional empirical constant is introduced. An excellent agreement between the proposed model predictions and experimental data is found. The validity of the present model for active nucleation site density is thus verified. The proposed mathematical model can reveal the physical mechanisms of heat transfer in boiling systems.
Keywords:
Active nucleation site, heat transfer, contact angle, statistical property, wall superheat,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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