In-tube cooling heat transfer of supercritical carbon dioxide. Part 1. Experimental measurement

Dang, Chaobin; Hihara, Eiji

doi:10.1016/j.ijrefrig.2004.04.018

Cited by 384 publications

(141 citation statements)

References 14 publications

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“…In Figs. 2 and 3, where the heat flux is lower at 6 and 12 kW/ m 2 respectively, the correlations proposed by Krasnoshchekov et al [10], Petrov and Popov [12], Pitla et al [15], and Dang and Hihara [5] agree well with the experimental data. Yoon et al [4] correlation predicts well in the liquidlike region.…”

Section: Comparisons Between the Correlations And The Experimental Datasupporting

confidence: 85%

“…Because of the lack of the wall temperature in most of the previous studies, the experimental data from Dang and Hihara [5] are the only choice to verify the correlations in the paper. The test conditions are that mass flux is fixed at 200 kg/m 2 s, inlet pressure at 8 MPa, and heat flux ranging from 6 to 33 kW/m 2 .…”

Section: Comparisons Between the Correlations And The Experimental Datamentioning

confidence: 99%

“…The existing studies mainly focused on four concerning effects (including mass flux, inlet pressure, tube diameter and heat flux) on heat transfer behavior, and have been summarized [1,2]. Conclusions have been drawn that the heat transfer coefficient increased with increasing mass flux [3][4][5][6][7]; that pressure increase made the maximal heat transfer coefficient decrease [3][4][5][6][7]; that Nusselt number decreased as the tube diameter decreased when the Re, Pr and temperature difference between bulk fluid and wall temperature were kept constant for a given bulk fluid temperature [3]; and that the heat transfer coefficient was almost unaffected by heat flux when T b \ T pc , while it increased significantly with increasing heat flux when T b [ T pc [5]. The complex property variations make the heat transfer characteristics of supercritical CO 2 differ considerably from those of constant property fluids.…”

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Analysis on heat transfer correlations of supercritical CO2 cooled in horizontal circular tubes

Lin

2011

Heat Mass Transfer

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The objective of the present study is to analyze the heat transfer correlations of supercritical CO 2 cooled in horizontal circular tubes. In the paper, heat transfer correlations are first reviewed and compared with the experimental data at different heat fluxes. The results show that most of the previous correlations agree well with the experimental data under lower heat flux, but fail to predict the heat transfer coefficient well when the heat flux is as high as 33 kW/m 2 . The study of buoyancy effect on convective heat transfer shows that buoyancy effect significantly affects the heat transfer with the increase of heat flux, and both free and forced convections operate in the turbulence flow during supercritical CO 2 cooling process. The influencing factors on heat transfer coefficient are summarized and the new correlation can be developed with the four dimensionless numbers.

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Section: Comparisons Between the Correlations And The Experimental Datasupporting

confidence: 85%

Section: Comparisons Between the Correlations And The Experimental Datamentioning

confidence: 99%

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confidence: 99%

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Analysis on heat transfer correlations of supercritical CO2 cooled in horizontal circular tubes

Lin

2011

Heat Mass Transfer

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“…超临界流体的对流传热研究可以追溯到 20 世纪 80 年代, 但大部分研究针对水 [7] 、二氧化碳 [8] 以及甲烷 [9] 等简单物质. 主要结论为在一定条件下, 当壁面温度高于流体的临界温度或者拟临界温度时将发生传热恶化或强化现象 [5~9] .…”

Section: 引言unclassified

超临界态煤油流动与对流传热特性数值研究

仲¹,

陈²,

党³

et al. 2013

Sci. Sin.-Tech.

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“…But most studies have been focused on pure fluids such as water [7], carbon dioxide [8] and methane [9]. The main conclusion obtained with the previous studies is that deterioration or enhancement of heat transfer occurs when the wall temperature is higher than the critical temperature or pseudo-critical temperature [5][6][7][8][9]. So far, very few studies about heat transfer of supercritical kerosene have been reported, of which the majority are experimental studies.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation on flow and convective heat transfer of aviation kerosene at supercritical conditions

Dang

Zhong

Chang

2012

Sci. China Technol. Sci.

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In this paper, characteristics of flow and convective heat transfer of China RP-3 kerosene in straight circular pipe were numerically studied. Navier-Stokes equations were solved using RNG k- turbulence model with low Reynolds number correction. The thermophysical and transport properties of the China RP-3 kerosene were calculated with a 10-species surrogate and the extended corresponding state method (ECS) combined with Benedict-Webb-Rubin equation. The independence of grids was first studied and the numerical results were then compared with experimental data for validation. Under flow conditions given in the paper, the results show that deterioration of convective heat transfer occurs when the wall temperature is slightly higher than the pseudo-critical temperature of kerosene for cases with wall heat flux of 1.2 and 0.8 MW/m 2 . The degree of the heat transfer deterioration is weakened as the heat flux decreases. The deterioration, however, does not happen when the heat flux on the pipe wall is reduced to 0.5 MW/m 2 . Based on the analysis of the near-wall turbulent properties, it is found that the heat transfer deterioration and then the enhancement are attributed partly to the change in the turbulent kinetic energy in the vicinity of pipe wall. The conventional heat transfer relations such as Sieder-Tate and Gnielinski formulas can be used for the estimation of kerosene heat convection under subcritical conditions, but they are not capable of predicting the phenomenon of heat transfer deterioration. The modified Bae-Kim formula can describe the heat transfer deterioration. In addition, the frictional drag would increase dramatically when the fuel transforms to the supercritical state. aviation kerosene, supercritical, convective heat transfer, numerical study Citation:Dang G X, Zhong F Q, Chen L H, et al. Numerical investigation on flow and convective heat transfer of aviation kerosene at supercritical conditions.

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In-tube cooling heat transfer of supercritical carbon dioxide. Part 1. Experimental measurement

Cited by 384 publications

References 14 publications

Analysis on heat transfer correlations of supercritical CO2 cooled in horizontal circular tubes

Analysis on heat transfer correlations of supercritical CO2 cooled in horizontal circular tubes

超临界态煤油流动与对流传热特性数值研究

Numerical investigation on flow and convective heat transfer of aviation kerosene at supercritical conditions

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