Prediction of nucleate pool boiling heat transfer coefficient

Sathyabhama, A.; Hegde, Ramakrishna N.

doi:10.2298/tsci1002353s

Cited by 12 publications

(4 citation statements)

References 1 publication

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“…The pool boiling heat transfer of FC-72 at different pressures on a plain plate heater (15×15 mm 2 ) was studied [39]. The pool boiling heat transfer performance of ammonia within the evaporator of a refrigeration unit with the use of existing correlations was assessed experimentally [40]. A correlation for heat transfer coefficient in the nucleate region based on the Buckingham π theorem for Geva-T and low finned tube was estimated for five liquids (R-113, n-pentane, ethanol, water, and R-11) boiling at atmospheric pressure [41].…”

Section: Refrigerants and Dielectric Fluidsmentioning

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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Section: Refrigerants and Dielectric Fluidsmentioning

confidence: 99%

Research progresses and future directions on pool boiling heat transfer

Kumar¹,

Bhutani²,

Khatak³

2015

J. Mech. Eng. Sci.

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“…Thus, intensifying heat transfer performance during the boiling process is essential for saving energy and keep those systems durable. During the last decades, many efforts have been made to experimentally study the pool boiling heat transfer performance with various working fluids involving pure liquids [4,5], refrigerants [6,7], and mixtures liquids [8][9][10]. Other studies have been conducted by surface heating modifications to enhance the pool boiling heat transfer performance [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Pool Boiling Heat Transfer Performance Using Tungsten Oxide WO3 Nanomaterial-Based Water Nanofluids

Kamel

Lezsovits

2020

Materials

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This study aims to experimentally investigate the pool boiling heat transfer coefficient behavior using tungsten oxide-based deionized water nanofluids and comparing them to deionized water as conventional fluid. The influence of different dilute volumetric concentrations (0.005%–0.05% Vol.) and applied heat fluxes were examined to see the effect of these parameters on the pool boiling heat transfer performance using nanofluids from a typical horizontal heated copper tube at atmospheric pressure conditions. Results demonstrated that the pool boiling heat transfer coefficient (PBHTC) for both deionized water and nanofluids increased with increasing the applied heat flux. The higher PBHTC enhancement ratio was 6.7% for a volume concentration of 0.01% Vol. at a low heat flux compared to the deionized water case. Moreover, the PBHTC for nanofluids was degraded compared to the deionized water case, and the maximum reduction ratio was about 15% for a volume concentration of 0.05% Vol. relative to the baseline case. The reduction in PBHTC was attributed to the deposition of tungsten oxide nanoflakes on the heating surface during the boiling process, which led to a decrease in the density of the nucleation sites.

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“…Figure 1 illustrates a sketch of the mean affecting parameters on pool boiling heat transfer with immersion tubes. Many reported studies associated with pool boiling from the single tube or tubes bank introduced in literature utilizing experimental studies, and an empirical correlation was proposed to predict the heat transfer coefficient [10][11][12][13][14][15]. The accuracy of the proposed correlations is still challenging due to the presence of various parameters that are related to this mechanism.…”

Section: Introductionmentioning

confidence: 99%

Predicting of Pool Boiling Heat Transfer From a Horizontal Heated Tube Using Two Fluids Multiphase Model

Kamel¹,

Lezsovits²

2020

ARFMTS

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This simulation aims to investigate numerically the pool boiling heat transfer from horizontal heated copper tube at atmospheric pressure. The Eulerian-Eulerian framework applied together with including Rensselaer Polytechnic Institute RPI boiling model to mimic the boiling process and predicting the heat and mass transfer inside the pool-boiling chamber. Efforts have been made in this simulation to correct the quenching heat flux part by modifying the bubble waiting time coefficient through adopting the trial and error procedure to correlate this coefficient to superheat temperature. The results of the boiling curve and the heat transfer coefficient of the present model are validated with experimental data from the literature and shown good agreement. Moreover, transient analysis of vapor volume fraction contours, vapor velocity vectors, and streamlines of water velocity at different superheat temperatures, as well as the time steps are presented and concisely discussed in this work.

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Prediction of nucleate pool boiling heat transfer coefficient

Cited by 12 publications

References 1 publication

Research progresses and future directions on pool boiling heat transfer

Research progresses and future directions on pool boiling heat transfer

Experimental Investigation on Pool Boiling Heat Transfer Performance Using Tungsten Oxide WO3 Nanomaterial-Based Water Nanofluids

Predicting of Pool Boiling Heat Transfer From a Horizontal Heated Tube Using Two Fluids Multiphase Model

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