Numerical investigation on flow condensation of zeotropic hydrocarbon mixtures in a helically coiled tube

Yu, Jiawen; Jiang, Yiqiang; Cai, Weihua; Li, Fengzhi

doi:10.1016/j.applthermaleng.2018.02.006

Cited by 36 publications

(3 citation statements)

References 30 publications

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“…The effects of mass flux and vapor quality on the heat transfer coefficient and frictional pressure drop were studied by numerical simulations and experiments. Compared with the experimental data, the Shah correlation could predict heat transfer coefficients well, within a mean deviation of ±20% [13][14][15].…”

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confidence: 88%

Optimal selection of two-phase tube-side heat transfer model for small-scale LNG spiral wound heat exchanger

Sun

Han

et al. 2019

CI&CEQ

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mentioning

confidence: 88%

Optimal selection of two-phase tube-side heat transfer model for small-scale LNG spiral wound heat exchanger

Sun

Han

et al. 2019

CI&CEQ

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“…Ganapathy et al (2012Ganapathy et al ( , 2013 compared numerically predicted two-phase frictional pressure drop and two-phase Nusselt number with prior empirical correlations and concluded that the predictions of the proposed numerical model are of reasonably good accuracy. Yu et al (2018) used the numerically determined film heat transfer coefficient to calculate the heat transfer coefficient of zeotropic mixtures. Qiu et al (2015) compared numerically determined heat transfer coefficients and frictional pressure drops using different turbulence models and concluded that the Reynolds stress model gave the best results because of its ability to cater for anisotropic turbulent flows.…”

Section: Experimental and Modelling Studies In Simplified Geometriesmentioning

confidence: 99%

Thermal Energy Processes in Direct Steam Generation Solar Systems: Boiling, Condensation and Energy Storage – A Review

et al. 2019

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“…Yu et al [ 18 ] studied the condensation heat transfer and frictional pressure drop characteristics in helically coiled tubes using experimental methods and compared their correlations. Yu et al [ 19 , 20 ] also studied the condensation flow patterns and heat transfer coefficients of methane/propane and ethane/propane mixtures in helical coils using numerical simulations and proposed a flow pattern division criterion for hydrocarbon refrigerant condensation. Qiu et al [ 21 , 22 ] combined computational fluid dynamics (CFD) with an improved silver method to calculate the condensation heat transfer coefficient of a mixed refrigerant in the tube of a spiral-wound heat exchanger.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of heat transfer performance of spiral wound heat exchanger under sloshing condition

Dong,

2023

PLoS ONE

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LNG floating production storage and offloading (FPSO) unit is a new type of floating production unit developed for offshore natural gas fields. It performs the functions of natural gas extraction, pretreatment, liquefaction, and storage. In this study, the heat transfer characteristics of a spiral-wound heat exchanger were studied using numerical simulations, which provides a basis for equipment selection and structural optimization of spiral-wound heat exchangers. The main research contents and conclusions are as follows. Under land-based simulation conditions, the heat transfer coefficient of the shell side of the spiral-wound heat exchanger decreases with an increase in the winding angle of the heat exchange tube, decreases with an increase in the spacing of the heat exchange tube, and increases with an increase in the outer diameter of the heat exchange tube. When the winding angle increased from 5° to 8°, the heat transfer coefficient decreased by 6.70%. The heat transfer coefficient of the shell side decreased by 13.21% when the heat exchange tube spacing increased from 14 to 17 mm. The heat transfer coefficient of the shell side increased by 22.89% when the outer diameter of the heat exchange tube increased from 9 to 12 mm. When the sloshing angle is constant, the heat transfer coefficient of the spiral-wound heat exchanger decreases with an increase in the winding angle and spacing of the heat exchange tubes, and increases with an increase in the outer diameter of the heat exchange tubes. When the structural parameters of the heat exchanger are constant, the heat transfer coefficient decreases as the sloshing angle increases. When the sloshing angle was less than 3°, the sloshing promoted heat transfer on the shell side. When the sloshing angle was higher than 7°, the heat transfer effect of the shell side deteriorated considerably, which weakened the heat transfer performance of the heat exchanger. When the sloshing period is constant, the heat transfer coefficient of the wound heat exchanger decreases with an increase in the winding angle and spacing of the heat exchange tubes, and increases with an increase in the outer diameter of the heat exchange tubes. When the structural parameters of the heat exchanger are constant, the heat transfer coefficient increases with sloshing period. When the sloshing period was greater than 15 s, the influence of sloshing on the heat transfer on the shell side of the heat exchanger was relatively weak.

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Numerical investigation on flow condensation of zeotropic hydrocarbon mixtures in a helically coiled tube

Cited by 36 publications

References 30 publications

Optimal selection of two-phase tube-side heat transfer model for small-scale LNG spiral wound heat exchanger

Optimal selection of two-phase tube-side heat transfer model for small-scale LNG spiral wound heat exchanger

Thermal Energy Processes in Direct Steam Generation Solar Systems: Boiling, Condensation and Energy Storage – A Review

Numerical simulation of heat transfer performance of spiral wound heat exchanger under sloshing condition

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