New Model of Heat Transfer in the Process of Nucleate Boiling in a Pool: Prediction and Assessment

Chouarfa, Fella; Benhamza, M. E. Hocine; Bendjaballah, Malek

doi:10.1007/s10891-014-1068-3

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…The characteristics of bubble detachment appear to be notably influenced by the triple-line contact angle for all working fluids. The heat exchange through the boundary between the vapor, liquid, and solid phases was investigated by a new developed model [25]. It was concluded that the predicted results agree very well with experimental data for the partial nucleate boiling regime for different fluids and the model can be contemplated for fully developed nucleate boiling.…”

Section: Of 20mentioning

confidence: 63%

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

Danish

Mesfer

2019

Processes

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A mathematical model has been developed for heat exchange in nucleate boiling at high flux applying an energy balance on a macrolayer. The wall superheat, macrolayer thickness, and time are the parameters considered for predicting the heat flux. The influence of the wall superheat and macrolayer thickness on average heat flux has been predicted. The outcomes of the current model have been compared with Bhat’s constant macrolayer model, and it was found that these models are in close agreement corresponding to the nucleate pool boiling regime. It was concluded that the wall superheat and macrolayer thickness contributed significantly to conduction heat transfer. The average conduction heat fluxes predicted by the current model and by Bhat’s model are in close agreement for a thinner macrolayer of approximately 50 µm. For higher values of the wall superheat, which corresponds to the nucleate pool boiling condition, the predicted results strongly agree with the results of Bhat’s model. The findings also validate the claim that conduction across the macrolayer accounts for the main heat transfer mode from the heater surface to boiling liquid at high heat flux in nucleate pool boiling.

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Section: Of 20mentioning

confidence: 63%

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

Danish

Mesfer

2019

Processes

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“…A heat transfer enhancement method during cooling of microelectronic elements by the application of ultrasonic fields using wires of different diameters in a pool of subcooled water was presented [77]. A relation for nucleate boiling heat transfer of water through the solid-liquid interface using experimental data was derived and was compared to the existing correlations [78]. A model was proposed to describe the accurate behavior of bubble departure during saturated pool boiling of pure water and ethanol under atmospheric pressure conditions [79].…”

Section: Pure Liquidsmentioning

confidence: 99%

Research progresses and future directions on pool boiling heat transfer

Kumar¹,

Bhutani²,

Khatak³

2015

J. Mech. Eng. Sci.

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This paper reviews the previous work carried on pool boiling heat transfer during heating of various liquids and commodities categorized as refrigerants and dielectric fluids, pure liquids, nanofluids, hydrocarbons and additive mixtures, as well as natural and synthetic colloidal solutions. Nucleate pool boiling is an efficient and effective method of boiling because high heat fluxes are possible with moderate temperature differences. It is characterized by the growth of bubbles on a heated surface. It occurs during boiling of liquids for excess temperature ranging from 5 to 30 °C in various processes related to high vaporization of liquid for specific purposes like sugarcane juice heating for jaggery making, milk heating for khoa making, steam generation, cooling of electronic equipments, refrigeration and etcetera. In this review paper, pool boiling method during heating of liquids for specific purpose is depicted. It is inferred that enhancement in pool boiling heat transfer is a challenging and complex task. Also, recent research and use of various correlations for natural convection pool boiling is reviewed.

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“…An enhanced VOF method [30] was employed to study the detachment characteristics of isolated bubbles. Heat exchange across the boundary between the vapor, liquid, and solid phases has been predicted [31]. Modeling and numerical study was performed to predict the role of the microlayer in heat transfer using a water-ethanol system [32].…”

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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New Model of Heat Transfer in the Process of Nucleate Boiling in a Pool: Prediction and Assessment

Cited by 5 publications

References 12 publications

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

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

Research progresses and future directions on pool boiling heat transfer

Predicting Conduction Heat Flux through Macrolayer in Nucleate Pool Boiling

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