Review of Cryogenic Pool Boiling Critical Heat Flux Databases, Assessment of Models and Correlations, and Development of New Universal Correlations

Patel, Raj; Meyer, Michael; Hartwig, Jason; Mudawar, Issam

doi:10.1016/j.ijheatmasstransfer.2022.122579

Cited by 11 publications

(6 citation statements)

References 84 publications

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“…It is known that CHF is the most important safety parameter for most systems that use boiling. The reviews [15,16] provide a large number of models for calculating the CHF in various conditions, including those obtained using neural networks. However, at present there are no reliable calculation methods for the value of CHF in thin layers of liquid.…”

Section: Resultsmentioning

confidence: 99%

Heat transfer during boiling in a thin horizontal layer of the dielectric liquid

Shvetsov,

Pavlenko,

Zhukov

2023

E3S Web Conf.

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This paper presents the results of the experimental study of heat transfer in horizontal layers of dielectric fluid HFE–7100 with a height of 2.5, 6.0 and 10 mm at pressures of 100 kPa and 50 kPa on a smooth surface (roughness Rz = 3.2 μm). It is found that the Gogonin formula correlates well with experimental data on heat transfer coefficients for HFE-7100 layers of different heights. The values of the critical heat flux obtained at various pressures are close to the calculated values according to the Yagov model in the layer with the height of 10.0 mm. A decrease in the height of the HFE–7100 layer led to a decrease in the values of the critical heat flux.

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Section: Resultsmentioning

confidence: 99%

Heat transfer during boiling in a thin horizontal layer of the dielectric liquid

Shvetsov,

Pavlenko,

Zhukov

2023

E3S Web Conf.

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“…For young and not so young people, liquid nitrogen is fascinating! At atmospheric pressure, its (boiling) temperature is approximately −196 • C (≈77 K), and being relatively cheap, easily available and stored, it can be considered as the most popular 'cryogenic liquid' 3 . Frequently, the first contact with it-strictly speaking!-is when the physician 'burns' a wart or some biological tissues.…”

Section: Introductionmentioning

confidence: 99%

“…This cushion allows the droplet motion without solid friction and strongly limits the heat transfer from the hot surface, leading to a low evaporation rate. To this spectacular phenomenon [1][2][3] was given the name of 'Leidenfrost effect' after who studied it first.…”

Section: Introductionmentioning

confidence: 99%

A simple, rapid and entertaining method to measure specific heat of metals using liquid nitrogen and Leidenfrost effect

Dourado,

Barreto,

Bonfait

2024

Phys. Educ.

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Taking advantage of the fascination of ‘playing’ with liquid nitrogen, this article proposes a didactical experiment involving the use of this liquid to measure the heat capacity of cylindrical metallic blocks (copper, aluminum, brass, and stainless steel; volume ≈ 20 cm3). It also permits to demonstrate qualitatively and quantitatively the Leidenfrost effect. The experimental setup consists of a low-cost recipient adequate for liquid N2 storage, a multimeter and a weighing scale. The experience starts by a rapid immersion of metallic block in liquid N2 and by measuring simultaneously the block’s temperature and the mass of the evaporated liquid along the cooling process. Knowing the latent heat of the liquid L , the evaporated mass Δ m during a temperature variation Δ T , the heat capacity is obtained by C p = L Δ m / Δ T . This method allowed to measure the specific heat in the 100–270 K temperature range in less than 3 min and the results are in quite good agreement with the literature data. On the other hand, the cooling rate, measured by temperature and liquid N2 change, clearly shows two regimes as expected by the Leidenfrost effect and the critical heat flux calculated is in good agreement with previous experiments. Such an experiment can be adapted to various student levels and present a didactical approach to important thermodynamical concepts in parallel with appealing phenomena.

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“…Due to the large latent heat, it is classically used for temperature management in many engineering devices. In fact, dissipating heat is a limiting factor even for novel applications such as quantum computers 1 , cryogenic fluids and advanced nano-cooling 2 . However, despite its ubiquity and technological relevance, not a single description is available to date to address the multiscale, non-equilibrium nature of boiling.…”

Section: Introductionmentioning

confidence: 99%

A nanoscale view of the origin of boiling and its dynamics

Gallo,

Magaletti,

Georgoulas

et al. 2023

Nat Commun

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In this work, we present a dynamical theory of boiling based on fluctuating hydrodynamics and the diffuse interface approach. The model is able to describe boiling from the stochastic nucleation up to the macroscopic bubble dynamics. It covers, with a modest computational cost, the mesoscale area from nano to micrometers, where most of the controversial observations related to the phenomenon originate. In particular, the role of wettability in the macroscopic observables of boiling is elucidated. In addition, by comparing the ideal case of boiling on ultra-smooth surfaces with a chemically heterogeneous wall, our results will definitively shed light on the puzzling low onset temperatures measured in experiments. Sporadic nanometric spots of hydrophobic wettability will be shown to be enough to trigger the nucleation at low superheat, significantly reducing the temperature of boiling onset, in line with experimental results. The proposed mesoscale approach constitutes the missing link between macroscopic approaches and molecular dynamics simulations and will open a breakthrough pathway toward accurate understanding and prediction.

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Review of Cryogenic Pool Boiling Critical Heat Flux Databases, Assessment of Models and Correlations, and Development of New Universal Correlations

Cited by 11 publications

References 84 publications

Heat transfer during boiling in a thin horizontal layer of the dielectric liquid

Heat transfer during boiling in a thin horizontal layer of the dielectric liquid

A simple, rapid and entertaining method to measure specific heat of metals using liquid nitrogen and Leidenfrost effect

A nanoscale view of the origin of boiling and its dynamics

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