Pulsed gas regulation on heat and mass transfer behaviors in a wet particle fluidized bed

Tang, Tianqi; He, Yurong; Wu, Yongji; Ren, Anxing; Wang, Tianyu

doi:10.1016/j.seta.2021.101038

Cited by 3 publications

(2 citation statements)

References 59 publications

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“…Other undesirable inter-scale structures are reduced, leading to regulating the heat and mass transfer. 29 Besides this, significant heat transfer enhancements were observed for using microparticle-phase change materials (MPCMs) as heat transfer mass media in the fluidized beds. 30 Although sensible heat storage (SHS) is popular and practical for thermal energy storage (TES), latent heat storage (LHS) offers higher concentrations of stored energy.…”

Section: Introductionmentioning

confidence: 99%

“…A numerical DEM using energy and mass exchanges by introducing gas pulses indicated an optimized performance was obtained by controlling the flow regime. Other undesirable inter‐scale structures are reduced, leading to regulating the heat and mass transfer 29 . Besides this, significant heat transfer enhancements were observed for using microparticle‐phase change materials (MPCMs) as heat transfer mass media in the fluidized beds 30 …”

Section: Introductionmentioning

confidence: 99%

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Experimental study of convective heat transfer coefficient for pulsed fluidized bed using microcapsule phase change material

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental study of convective heat transfer coefficient for pulsed fluidized bed using microcapsule phase change material

2022

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DDPM simulation of the erosion of immersed tubes in a pulsating fluidized bed

Wang

2023

Chemical Engineering Science

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Effects of inlet boundary conditions on nonlinear characteristics in numerical risers

Liu,

Yang,

Ying

2024

Physics of Fluids

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Fluidized beds are favored for their high efficiency in material and heat exchange. However, a limited understanding of two-phase flow dynamics leads to the construction of larger equipment and makes precise control of fluidized beds challenging. Since it is challenging to eliminate the impact of signal noise in experiments, which arises from the inconsistency of particles and measurement methods, a square fluidized bed model has been established for numerical analysis of the chaotic characteristics of two-phase flow. The bubble distribution in the fluidized bed was observed more clearly, the bubble behavior was combined with the chaotic parameters, and the two flow states and the chaotic state were analyzed comprehensively. The results show that the bubbles present a regular arrangement parallel to the diagonal in the early stage of bubbling. At the same time, smooth reconstructed attractors are observed. The increase in fluidization wind speed will make the attractors rough until collapse. The bubbling bed experiences bifurcation into chaos as the fluidization wind speed increases, and we can see this process through the pressure signal. The system state cannot be distinguished by correlation dimension or K-entropy alone. Comprehensive consideration of a variety of chaotic features can be used as a method to identify two-phase flow chaotic states. The method used in this paper combines bubble behavior, pressure signal, power spectrum analysis, phase space reconstruction, correlation dimension, and Kolmogorov entropy to distinguish the state of the fluidized bed more accurately.

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Pulsed gas regulation on heat and mass transfer behaviors in a wet particle fluidized bed

Cited by 3 publications

References 59 publications

Experimental study of convective heat transfer coefficient for pulsed fluidized bed using microcapsule phase change material

Experimental study of convective heat transfer coefficient for pulsed fluidized bed using microcapsule phase change material

DDPM simulation of the erosion of immersed tubes in a pulsating fluidized bed

Effects of inlet boundary conditions on nonlinear characteristics in numerical risers

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