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2013 (Vol. 6, Issue: 04)
Article Information:

Calculation of Active Nucleation Site Density in Boiling Systems

Boqi Xiao, Guoping Jiang, Dongmei Zheng, Lingxia Chen and Bingyang Liu
Corresponding Author:  Boqi Xiao 

Key words:  Active nucleation site, heat transfer, contact angle, statistical property, wall superheat, ,
Vol. 6 , (04): 587-592
Submitted Accepted Published
August 24, 2012 September 24, 2012 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.
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  Cite this Reference:
Boqi Xiao, Guoping Jiang, Dongmei Zheng, Lingxia Chen and Bingyang Liu, 2013. Calculation of Active Nucleation Site Density in Boiling Systems.  Research Journal of Applied Sciences, Engineering and Technology, 6(04): 587-592.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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