Modeling a General Equation for Pool Boiling Heat Transfer

Abstract

It is recognized that the nucleate pool boiling data available in literature are mainly related to four known correlations, each differs from the other by a varying magnitude of constant coefficients, depending on restrictive experimental conditions. The present work is concerned in developing an empirically generalized correlation, which covers the entire range of nucleate boiling with a minimum possible deviation from experimental data. The least squares multiple regression technique is used to evaluate the best coefficient value used in the correlations. An empirical correlation that fits a broader scope of available data has been developed by a non-linear solution technique leading to the following equation:

A predictive model for confined and unconfined nucleate boiling heat transfer coefficient

“…5a-e. For high static contact angles (DI-water, Fig. 5a and b), the predictive methods of Rohsenow [19] and Li et al [23] provide results that are close and capture the main trend of the experimental database; however, Gupta and Varshney as referred by [18], Stephan and Abdelsalam [20], Cooper [24] and, Ribatski and Jabardo [22] fail to predict the experimental trend reported by Cardoso and Passos [1], Cardoso et al [8] and, Kiyomura et al [17]. Considering the use of refrigerant as the working fluid and as displayed in Fig.…”

“…In the present analysis, different correlations are considered for comparison with the proposed correlation as, Gupta and Varshney as referred by Hameed et al [18], Rohsenow [19], Stephan and Abdelsalam [20], Cooper [21], Ribatski and Jabardo [22], and Li et al [23].…”

“…Gupta and Varshney as referred by Hameed et al [18] developed a pool boiling heat transfer correlation based on their experimental data for distilled water, benzene, and toluene as working fluids over a heated horizontal cylinder. The correlation is given as follows:…”

“…In order to evaluate the capability of the correlations available in the literature to predict HTC results for pool boiling under confined and unconfined conditions, the experimental database [1,8,17] were compared with the values of HTC calculated from the correlations of Gupta and Varshney as referred by Hameed et al [18], Rohsenow [19], Stephan and Abdelsalam [20], Cooper [21], Ribatski and Jabardo [22] and, Li et al [23]. Table 1 presents the results of the statistical analysis of the comparisons between experimental and predicted data for pool boiling under confined Fig.…”

Developing a Mathematical Model for Nucleate Boiling Regime at High Heat Flux

“…The complete range of nucleate boiling was studied by proposing a generalized empirical correlation [27]. The coefficient value utilized in the correlation was determined by the least square technique and the non-linear solution technique was used to develop the correlation.…”