Experimental investigation of heat transfer to supercritical pressure carbon dioxide in a horizontal pipe

Adebiyi, George A.; Hall, W. B.

doi:10.1016/0017-9310(76)90123-x

Cited by 124 publications

(34 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The main standpoint is that HTD is generally caused by buoyancy force, acceleration or the combination of buoyancy force, acceleration due to the steep variation of thermal-physical properties. For example, Adebiyi and Hall [5] found that heat transfer was enhanced at the bottom of the tube but was reduced at the top of the tube by the effect of buoyancy. Bazargan et al [14] found that neglecting buoyancy effects could cause large discrepancies between the predictions of available empirical correlations and the experimental data.…”

Section: Introductionmentioning

confidence: 98%

“…Studies of heat transfer of supercritical fluids have been conducted since 1950s [3][4][5][6]. In the experimental aspect, Yamagata et al [4], Shitsman [3], and Ackerman [7] found that the HTD happens in their test, whereas Domin [8], Dickinson and Weich [9] had not observed deteriorated heat transfer.…”

Section: Introductionmentioning

confidence: 98%

“…Shiralkar and Griffith [10], Shitsman [11] also reaches a similar conclusion, that is, at high heat fluxes, deteriorated heat transfer occurred when the bulk fluid temperature was below while the wall temperature was above the pseudocritical temperature. Adebiyi and Hall [5] investigated the heat transfer of supercritical and subcritical pressure CO2 flowing through a uniformly heated 22.14 mm I.D. horizontal tube.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Buoyancy on the Mechanism of Heat Transfer Deterioration of Supercritical Water in Horizontal Tubes

Lei¹,

Li²,

Zhang³

et al. 2013

Journal of Heat Transfer

View full text Add to dashboard Cite

In order to get insights into the mechanisms governing the heat transfer deterioration (HTD) of supercritical water, systematical numerical simulations were carried out in the present study for the flow and heat transfer of supercritical pressure water in horizontal smooth tubes. The numerical results were found in very good agreement with the corresponding experimental data, validating the reliability and accuracy of the numerical model and the computational method. It was found that from these profiles along the top generatrix of the wall of the horizontal tube, there exists a thin fluid layer in which the thermophysical properties of the fluid, including the specific heat capacity, thermal conductivity, density and viscosity, all approach its minimum at a roughly identical axial position of the tube with the increasing of the bulk fluid enthalpy along the flow direction. The maximum wall temperature of the top generatrix, obviously show the occurrence of HTD. It was especially interesting that the axial position of the maximum top generatrix wall temperature (HTD position) fust coincided with the axial positions of" the minimum of the abovementioned thermophysical properties in the near top generatrix layer, which reveals the inherent connection between the HTD and the minimum value of the above-mentioned thermophysical properties of the supercritical water. It was concluded that the HTD of supercritical water in horizontal tubes was evidently due to the vertical stratification and the accumulation of light supercritical pressure fluid (very high enthalpy but low density) in the near top generatrix region. Also, the HTD phenomena under supercritical condition was similar to that of the fllm boiling of the subcritical pressure water. This result clearly reveals why the axial position of the HTD occurred on the top wall of horizontal tubes (with bulk fluid enthalpy of roughly 1750 kjI kg) is axially far ahead of the position corresponding to the critical point of the supercritical water (with bulk fluid enthalpy of roughly 2150 kJIkg) in terms of the bulk fluid enthalpy.

show abstract

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Buoyancy on the Mechanism of Heat Transfer Deterioration of Supercritical Water in Horizontal Tubes

Lei¹,

Li²,

Zhang³

et al. 2013

Journal of Heat Transfer

View full text Add to dashboard Cite

show abstract

“…Shiralkar and Griffith [28] discussed the SC-CO 2 heat transfer in a radical tube with diameters of 0.32 mm and 0.64 mm, which led to a twisted temperature curve. Adebiyi and Hall [29] concluded that gravity and buoyancy were closely related to the CO 2 heat transfer. Gungor and Winterton [30] determined that when the mass flow rate increased or the experimental pressure decreased, the thermal conductivity of CO 2 correspondingly increased.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2017

View full text Add to dashboard Cite

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.

show abstract

“…[74]. [89] and horizontal [114] turbulent sCO2 flows in large tubes. 'V' represents vertical and 'H' represents horizontal, the details of operating conditions can be found in [114].…”

Section: Declaration By Authormentioning

confidence: 99%

Computational investigations on heat transfer of turbulent supercritical CO2 in large tubes using RANS modelling

Wang¹

View full text Add to dashboard Cite

Owing to the potential to offer higher cycle efficiency, supercritical carbon dioxide (sCO2) is considered as the promising alternative to replace conventional working fluids, such as steam, for the next-generation power cycles embedded in Concentrating Solar Thermal (CST) applications. Gaining in-depth understandings on flow and heat transfer characteristics of turbulent sCO2 near critical point Publications included in this thesisWith permission by the University of Queensland Policy 4.60.07 (Alternate Thesis Format Options), scholarly works during candidature are included and form the main parts of this thesis. The contexts of four chapters (Chapter 3, 4, 5 and 6) have been published in peer reviewed journals and the review work (Chapter 2) has been submitted to a peer-review journal. Clear statements of authorship and contribution are provided as follows.

show abstract

Experimental investigation of heat transfer to supercritical pressure carbon dioxide in a horizontal pipe

Cited by 124 publications

References 1 publication

Effect of Buoyancy on the Mechanism of Heat Transfer Deterioration of Supercritical Water in Horizontal Tubes

Effect of Buoyancy on the Mechanism of Heat Transfer Deterioration of Supercritical Water in Horizontal Tubes

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

Computational investigations on heat transfer of turbulent supercritical CO2 in large tubes using RANS modelling

Contact Info

Product

Resources

About