Corrigendum to ‘‘On the formation of vapor film during quenching in de-ionized water and elimination of film boiling during quenching in natural sea water’’ [Int. J. Heat Mass Transfer 86 (2015) 65–71]

Hsu, Shu-Han; Ho, Yuan-Hong; Ho, Ming-Xi; Wang, Jian-Chiuan; Pan, Ching‐Tsai

doi:10.1016/j.ijheatmasstransfer.2016.03.055

Cited by 2 publications

(5 citation statements)

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“…Figure 7 shows how uninformative the thermogram is in terms of the change in temperature in the sample center: when the surface temperature dropped to 100°C, the center temperature remained at about 700°C. When the cooling regimes of a ball of low-heat conducting metals is studied, it is hardly possible to obtain reliable quantitative information based on the readings of one thermocouple, whether it is centrally or located or is at some distance from the surface (as in [15]).…”

Section: Resultsmentioning

confidence: 99%

“…Unfortunately, entirely different approaches are more common. Hsu et al [15] even mentioned the "elimination of film boiling" in the title of the article on cooling of a sphere in seawater with a temperature of 33°C. The initial temperature of the sphere (stainless steel) with a diameter of 17.5 mm was 1000°C; the authors claim that, after a "concise transition boiling period, nucleate boiling is settled."…”

Section: Heat and Mass Transfer And Physical Gasdynamicsmentioning

confidence: 99%

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Effect of Coating by a Carbon Nanostructure on Heat Transfer with Unsteady Film Boiling

et al. 2019

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We present the results of an experimental study of heat transfer regimes during cooling in water of high-temperature, heated steel balls with a technically smooth and modified surface. The modification consisted of the application of a finely dispersed carbon coating to the surface followed by electron beam treatment. When the samples are placed in subcooled water, an intensive heat transfer regime occurs on the both samples; it appeared upon film boiling with heat fluxes on the surface up to 6 MW/m 2 . The heat flux values based on the initial cooling thermograms were obtained from a one-dimensional inverse heat conduction problem. The carboncoating leads to a decrease in the surface temperature, which corresponds to the transition to the intensive cooling mode, whereas the intensive cooling mode itself is identical for samples with the different surface treatments. Experimental results confirm the approximate model proposed for the conditions for the occurrence of the intensive cooling regime during film boiling of a subcooled liquid.

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Section: Resultsmentioning

confidence: 99%

Section: Heat and Mass Transfer And Physical Gasdynamicsmentioning

confidence: 99%

Effect of Coating by a Carbon Nanostructure on Heat Transfer with Unsteady Film Boiling

et al. 2019

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“…Similar to the water-cooled nuclear reactors, it is necessary to have an emergency core cooling (ECC) system as a part of preventive actions, especially in the occurance of a loss of coolant accident (LOCA) [1,2]. Under this situation, shutting down the reactor will not prevent the fuel el153ement from severe overheating.…”

Section: Introduction mentioning

confidence: 99%

“…It is considered from spray initiation to the start of wetting front movement, defined as Leidenfrost transition. As the existance of film boiling regime determines the total duration of quenching process of the fuel bundle, further delay might bring cladding to the overheating state or even a failure of the emergency cooling system, the worst case [1,2]. Fu et al [4] reported their study of using brass rod to simulate the quenching process of the nuclear fuel rod after the power plant shutdown.…”

Section: Introduction mentioning

confidence: 99%

“…Others reported the work on the attempt to reduce the thickness of vapor layer by applying additive of Na 2 CO 3 in high spray flux value [12]. Leidenfrost temperature is influenced by some parameters, e.g., water spray flux [8,[13][14][15], initial temperature [1,11], material properties [1,13,16], water temperature [16][17][18][19], and salt content in the cooling water [2,11,20,21]. Liang and Mudawar [22] highlighted their finding as no reliable correlations or models that could predict Leidenfrost temperature accurately.…”

Section: Introduction mentioning

confidence: 99%

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Characterization of The Heat Transfer on Spray Quenching for Different Material Properties

Sabariman

Specht²

2021

Atom Indo.

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A broad range of water spray applications as a means of two-phase cooling scheme has encouraged researches in the thermal management system to support safety and process efficiency in industries. In the application of above saturation temperature, the cooling process follows the boiling curve where the dissipated heat flux is figured out as a function of the wall temperature. Knowledge on constructing the boiling curve is an essential part in order to define the moving boundary, and boundary value problems occur in metal cooling process analysis involving heat transfer and phase change. The objective of the research was to characterize the boiling parameters on different materials in the regime of film boiling, transition boiling, and nucleate boiling as the basis for its boiling curve construction. To explain the influence of material properties, this work is featuring, firstly, the calculated vapor film thickness in film boiling regime by promoting self-developed analytical model of single droplet and, secondly, the calculated boiling width which indicates a strong combination of surface temperature and heat flux observed as the boiling phenomena. This is obtained by calculating the propagation of wetting front and 100 o C points. This experimental work employed a volumetric spray flux of 4.2, 10 and 13.7 kg/m 2 s to cool a hot metal samples of aluminum alloy AA6082 and nickel heated up to 560 °C. An infrared camera was used to record the temperature drop over time. Heat flux calculation follows the numerical procedure according to 1D energy balance model. Calculated vapor film thickness explains why the HTC tends to increase with the decrease of the surface temperature. Leidenfrost and Departure from Nucleate Boiling (DNB) temperatures are found to be inversely proportional to the heat penetration coefficient of the metal while maximum heat flux and boiling width increase with it.

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Corrigendum to ‘‘On the formation of vapor film during quenching in de-ionized water and elimination of film boiling during quenching in natural sea water’’ [Int. J. Heat Mass Transfer 86 (2015) 65–71]

Cited by 2 publications

References 0 publications

Effect of Coating by a Carbon Nanostructure on Heat Transfer with Unsteady Film Boiling

Effect of Coating by a Carbon Nanostructure on Heat Transfer with Unsteady Film Boiling

Characterization of The Heat Transfer on Spray Quenching for Different Material Properties

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