Theoretical Studies on Transient Pool Boiling Based on Microlayer/Macrolayer Model(Mechanism of Transition from Nonboiling Regime to Film Boiling).

耀華, 趙; 隆士, 増岡; 隆治, 鶴田

doi:10.1299/kikaib.63.964

Cited by 5 publications

(4 citation statements)

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“…They obtained a dimensional empirical correlation, for the pool boiling heat flux q in water at 100 -4763 kN/m 2 , as shown in Equation (3).…”

Section: Theoretical Analysis Of Bubble Agitation Modelsmentioning

confidence: 99%

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Modeling a General Equation for Pool Boiling Heat Transfer

Hameed

Khan²,

Mahdi³

2013

ACES

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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:

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“…They obtained a dimensional empirical correlation, for the pool boiling heat flux q in water at 100 -4763 kN/m 2 , as shown in Equation (3).…”

Section: Theoretical Analysis Of Bubble Agitation Modelsmentioning

confidence: 99%

“…Zhao et al [3] put forward a model for transient pool boiling heat transfer. The model employed is too high heating rate to be realized in practical experiments for a horizontal surface.…”

Section: Introductionmentioning

confidence: 99%

Modeling a General Equation for Pool Boiling Heat Transfer

Hameed

Khan²,

Mahdi³

2013

ACES

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“…The data are obtained for wall superheats of 20 K, 30 K, and 40 K, and a total cycle time of 40 ms is chosen for analyzing the influence of the macrolayer. It is observed that average heat flux obtained using the current model and Bhat's model [39] declined with increased macrolayer thickness from 30 µm to 200 µm. In all cases, it is observed that increased macrolayer thickness contributed negatively to the average conduction heat flux, as evident from the curves.…”

Section: Average Conduction Heat Fluxesmentioning

confidence: 81%

“…An unsteady-state model for energy exchange across the macrolayer has been presented [38,39]. An alternate critical heat flux theory based on the significance of the macrolayer was proposed by Haramura and Katto [40] and Pan et al [41].…”

Section: Introductionmentioning

confidence: 99%

Predicting Conduction Heat Flux through Macrolayer in Nucleate Pool Boiling

et al. 2021

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In the current work, the heat flux in nucleate pool boiling has been predicted using the macrolayer and latent heat evaporation model. The wall superheat (ΔT) and macrolayer thickness (δ) are the parameters considered for predicting the heat flux. The influence of operating parameters on instantaneous conduction heat flux and average heat flux across the macrolayer are investigated. A comparison of the findings of current model with Bhat’s decreasing macrolayer model revealed a close agreement under the nucleate pool boiling condition at high heat flux. It is suggested that conduction heat transfer strongly rely on macrolayer thickness and wall superheat. The wall superheat and macrolayer thickness is found to significantly contribute to conduction heat transfer. The predicted results closely agree with the findings of Bhat’s decreasing macrolayer model for higher values of wall superheat signifying the nucleate boiling. The predicted results of the proposed model and Bhat’s existing model are validated by the experimental data. The findings also endorse the claim that predominant mode of heat transfer from heater surface to boiling liquid is the conduction across the macrolayer at the significantly high heat flux region of nucleate boiling.

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Numerical study of high heat flux pool boiling heat transfer

Shoji

Maruyama

2001

International Journal of Heat and Mass Transfer

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Theoretical Studies on Transient Pool Boiling Based on Microlayer/Macrolayer Model(Mechanism of Transition from Nonboiling Regime to Film Boiling).

Cited by 5 publications

References 0 publications

Modeling a General Equation for Pool Boiling Heat Transfer

Modeling a General Equation for Pool Boiling Heat Transfer

Predicting Conduction Heat Flux through Macrolayer in Nucleate Pool Boiling

Numerical study of high heat flux pool boiling heat transfer

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