Numerical simulation of heat transfer performance of different heat exchange tubes in heat recovery steam generator

Gao, Haibo; Zhang, Yu‐Qiu; Liu, Yongqi; Wang, Yanxia; Sun, Peng; Ma, Yuxiang; Gu, Zehong; Yu, Wenbo

doi:10.1016/j.psep.2022.05.045

Cited by 6 publications

(2 citation statements)

References 35 publications

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“…A dimension heat conduction conductivity mold about a single module of a thermo tube chill-down pile was smoothly calculated, and the effects of the air gap thickness, air gap thermal conductivity, radiative heat transfer, and surface roughness on the temperature field of the reactor core under different power densities were calculated, and an approximation of the thermal conductivity correction for the effect of the radiative heat transfer and surface roughness factors was proposed, which was verified with the existing experimental results. Gao et al [8] creatively proposed a new spring-vane hybrid heat exchanger tube.…”

Section: Introductionmentioning

confidence: 99%

Effect of boundary layer thickness and dimensionless wall distance y+ on numerical simulation of heat pipes

Zhao,

Deng,

Xue

et al. 2024

J. Phys.: Conf. Ser.

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To consider the sway of boundary layer thickness and dimensionless wall distance y+ on the numerical simulation results of the thermo tube, taking the straight thermo tube as an example, using the continuity equation, momentum equation, energy equation, and turbulence model equation as the controlling equations, and adopting the finite volume method for the spatial discretization, the numerical simulation study of the heat pipe is carried out by controlling the changes of boundary layer thickness and dimensionless wall distance y+. Numerical simulation studies show that the boundary layer thickness and y+ have a large effect on the numerical simulation of heat pipes. Reasonably setting these two parameters within a certain range can improve the accuracy of heat pipe numerical calculations, and the results of the study can provide a reference for the security analysis of thermo tube reaction vessels.

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Section: Introductionmentioning

confidence: 99%

Effect of boundary layer thickness and dimensionless wall distance y+ on numerical simulation of heat pipes

Zhao,

Deng,

Xue

et al. 2024

J. Phys.: Conf. Ser.

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show abstract

“…The commonly used evaluation indexes based on the first law of thermodynamics are j/f [24][25][26][27] and the PEC [28][29][30]. A novel spring-blade mixed heat exchange tube was suggested by Gao et al [31] to increase the heat transfer efficiency of the HRSG. Through the examination of the velocity field, temperature field, pressure field, and overall heat transfer properties, they concluded that its heat transfer coefficient was better than that of the spring and blade heat exchange tube.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation on Heat Transfer and Flow Resistance Characteristics of Superheater in Hydrocracking Heat Recovery Steam Generator

Zhang,

Wang,

Zhao

et al. 2023

Energies

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The heat recovery steam generator (HRSG) was utilized to recover the waste heat resources of the catalyst’s regenerated gas with the objective to reduce the energy consumption of the hydrocracking process. In this study, the flow resistance and heat transfer performance of the superheater tube bundles in the hydrocracking HRSG were investigated via numerical simulation. The performance evaluation criterion (PEC1) was applied to characterize the comprehensive heat transfer performance of superheater tube bundles. The results showed that as the transverse tube pitch increased, the Nusselt number (Nu) showed a monotonically increasing trend, the Euler number (Eu) showed a monotonically decreasing trend, and PEC1 showed a monotonically increasing trend. As the longitudinal tube pitch increased, Nu exhibited a monotonically increasing trend, Eu showed a monotonically decreasing trend, and PEC1 showed a monotonically increasing trend. In the scope of the simulated results, as the transverse and longitudinal tube pitches were 110 mm and 95 mm, respectively, PEC1 reached the maximum value. Compared with the primary structural parameters, PEC1 increased by 2.32% and 8.50%, respectively. Finally, a new correlation was proposed to predict Nu and Eu of the superheater tube bundles in the hydrocracking HRSG.

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Numerical investigation on flow and heat transfer characteristics of a PCHE with liquid lead–bismuth eutectic and sCO2 as working fluids

Liu,

Zhang,

Yang

et al. 2024

Annals of Nuclear Energy

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Numerical simulation of heat transfer performance of different heat exchange tubes in heat recovery steam generator

Cited by 6 publications

References 35 publications

Effect of boundary layer thickness and dimensionless wall distance y+ on numerical simulation of heat pipes

Effect of boundary layer thickness and dimensionless wall distance y+ on numerical simulation of heat pipes

Numerical Investigation on Heat Transfer and Flow Resistance Characteristics of Superheater in Hydrocracking Heat Recovery Steam Generator

Numerical investigation on flow and heat transfer characteristics of a PCHE with liquid lead–bismuth eutectic and sCO2 as working fluids

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