Heat transfer under supercritical pressures and heat transfer deterioration boundaries

Grabezhnaya, V. A.; Kirillov, P. L.

doi:10.1134/s0040601506040069

Cited by 41 publications

(12 citation statements)

References 7 publications

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“…They have a critical disadvantage in application to a different medium other than the tested one, due to a direct introduction of dimensional parameters. Those criteria including a generalized criterion [34] were examined against the present experimental data.…”

Section: Criteria For Heat Transfer Deteriorationmentioning

confidence: 99%

“…However, Grabezhnaya and Kirillov [34] questioned its accuracy and recommended a change of constant (from 0.0069 to 0.0052) for round tubes. Fig.…”

Section: Formulation Of a New Correlation For Upward Flowmentioning

confidence: 99%

“…[32] and [33] for CO 2 . Grabezhnaya and Kirillov [34] attempted to develop a universal deterioration criterion applicable to any fluid by introducing a ratio of molecular mass. The assessment of its validity against CO 2 revealed that it can be applied only to the range of high mass flux, G > 1000 kg/m 2 s [35].…”

Section: Introductionmentioning

confidence: 99%

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Forced and mixed convection heat transfer to supercritical CO2 vertically flowing in a uniformly-heated circular tube

Bae

Kim

Kang

2010

Experimental Thermal and Fluid Science

197

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Section: Criteria For Heat Transfer Deteriorationmentioning

confidence: 99%

“…However, Grabezhnaya and Kirillov [34] questioned its accuracy and recommended a change of constant (from 0.0069 to 0.0052) for round tubes. Fig.…”

Section: Formulation Of a New Correlation For Upward Flowmentioning

confidence: 99%

See 1 more Smart Citation

Forced and mixed convection heat transfer to supercritical CO2 vertically flowing in a uniformly-heated circular tube

Bae

Kim

Kang

2010

Experimental Thermal and Fluid Science

197

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“…Koshizuka et al analyzed deterioration phenomena in heat transfer to supercritical water based on a parabolic solver for steady-state equations in nu-z two dimensions, a k-ε model for turbulence [38]. Grabezhnaya and Kirillov [39] analyzed the relations for technical calculations of the normal heat transfer in a rising water flow under supercritical pressure (SCP) and compared with recent experimental results. Urbano and Nasuti [40] considered the influence of deterioration of forced convection heat transfer for channel flows of supercritical fluids.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Characteristics and Prediction Model of Supercritical Carbon Dioxide (SC-CO2) in a Vertical Tube

et al. 2017

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Due to its distinct capability to improve the efficiency of shale gas production, supercritical carbon dioxide (SC-CO 2 ) fracturing has attracted increased attention in recent years. Heat transfer occurs in the transportation and fracture processes. To better predict and understand the heat transfer of SC-CO 2 near the critical region, numerical simulations focusing on a vertical flow pipe were performed. Various turbulence models and turbulent Prandtl numbers (Pr t ) were evaluated to capture the heat transfer deterioration (HTD). The simulations show that the turbulent Prandtl number model (TWL model) combined with the Shear Stress Transport (SST) k-ω turbulence model accurately predicts the HTD in the critical region. It was found that Pr t has a strong effect on the heat transfer prediction. The HTD occurred under larger heat flux density conditions, and an acceleration process was observed. Gravity also affects the HTD through the linkage of buoyancy, and HTD did not occur under zero-gravity conditions.

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“…The heat transfer coefficient between the subcritical steam and the water mix (nucleate boiling) was calculated with the Formula (Rassohin et al, 1970), which is valid within the scope of pressures between 8 and 20 MPa: The heat transfer coefficient of water in the supercritical state was calculated using the relationship (Grabezhnaja and Kirillow, 2006): and its other required properties were determined according to Wagner et al (2000).…”

Section: A Comparison Of the Operating Conditions Of Waterwall Tubes mentioning

confidence: 99%

Rate of corrosion of waterwalls in supercritical pulverised fuel boilers

Pronobis¹,

Litka²

2012

Chemical and Process Engineering

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This paper presents an analysis of the corrosion hazard in the burner belt area of waterwalls in pulverised fuel (PF) boilers that results from low-NOx combustion. Temperature distributions along the waterwall tubes in subcritical (denoted as SUB) and supercritical (SUP) boilers were calculated and compared. Two hypothetical distributions of CO concentrations were assumed in the near-wall layer of the flue gas in the boiler furnace, and the kinetics of the waterwall corrosion were analysed as a function of the local temperature of the tubes. The predicted rate of corrosion of the boiler furnace waterwalls in the supercritical boilers was compared with that of in the subcritical boilers.

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Heat transfer under supercritical pressures and heat transfer deterioration boundaries

Cited by 41 publications

References 7 publications

Forced and mixed convection heat transfer to supercritical CO2 vertically flowing in a uniformly-heated circular tube

Forced and mixed convection heat transfer to supercritical CO2 vertically flowing in a uniformly-heated circular tube

Heat Transfer Characteristics and Prediction Model of Supercritical Carbon Dioxide (SC-CO2) in a Vertical Tube

Rate of corrosion of waterwalls in supercritical pulverised fuel boilers

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