Heat transfer in a large-particle fluidized bed with immersed in-line and staggered bundles of horizontal smooth tubes

Zabrodsky, S.S.; Epanov, Yu. G.; Galershtein, D. M.; Saxena, S.C.; Kolar, Ajit Kumar

doi:10.1016/0017-9310(81)90002-8

Cited by 45 publications

(12 citation statements)

References 7 publications

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“… Comparison of predictions by Equation (6) and literature/our data: ○ Zabrodsky et al., □ Bartel and Genetti, ▵ Rasouli and Gorliz, ◊ Saxena et al., and ▿ this work.…”

Section: Resultssupporting

confidence: 53%

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Use of Particle Heat Carriers in the Stirling Engine Concept

Zhang

Gowing²,

Degrève

et al. 2016

Energy Tech

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The Stirling engine has drawn new attention for its high efficiency and flexibility towards the application of different heat sources. A new Stirling engine application in a renewable energy combined heat and power (CHP) concept will be presented, in which powders are used as the heat carrier between the hot storage and the ultimate Stirling reuse. A fluidized bed of small particles (50–150 μm) is examined in this study. The outside heat transfer coefficient to the finned Stirling heat exchanger largely exceeds 1500 W m−2 K−1 at very low fluidization velocities, which is, therefore, not the heat transfer limitation. Positron emission particle tracking experiments demonstrated that the particle movement and mixing in the fluidized bed are not hampered by the presence of the finned heat transfer tube. As the Stirling engine can reach efficiencies in excess of 30 % and has the potential to be integrated in a CHP mode of operation, it should be considered as a hot research topic in the renewable energy sector.

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“… Comparison of predictions by Equation (6) and literature/our data: ○ Zabrodsky et al., □ Bartel and Genetti, ▵ Rasouli and Gorliz, ◊ Saxena et al., and ▿ this work.…”

Section: Resultssupporting

confidence: 53%

“…[31] Thef ull testing program of the new Stirling concepti so ngoing, and resultsw ill be published in afollow-up paper. (6) and literature/our data: * Zabrodsky et al, [37] & Bartel and Genetti, [38]~R asouli and Gorliz, [39]Ŝ axenae tal., [40] and ! thiswork.…”

Section: Layout Of the Pilot-scale Stirling Engine With Bfb Heat Supplymentioning

confidence: 71%

Use of Particle Heat Carriers in the Stirling Engine Concept

Zhang

Gowing²,

Degrève

et al. 2016

Energy Tech

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“…(5) and (6), the mass transfer between the gas and solid phases was not considered in the present study. The coefficient can thus be expressed as follows [17]:…”

Section: Wall Heat Transfer In a Fluidized Bed 291mentioning

confidence: 98%

“…Moreover, the transfer of heat from a gas-solid flow through a physical wall is often encountered in engineering, especially through the wall of a body immersed in a fluidized bed [1][2][3][4][5]. In previous studies on the transfer of heat between a gas-solid flow and the surface of the wall of a body immersed in a fluidized bed, horizontal or vertical heat transfer tubes were used as the heat source [6][7][8][9][10][11], and the peculiar heat transfer processes were observed.…”

Section: Introductionmentioning

confidence: 99%

Wall Heat Transfer of a Small Blunt Body Immersed in a Fluidized Bed

Choi

2015

Numerical Heat Transfer, Part A: Applications

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In the present study, heat transfer through the wall of a blunt body immersed in a fluidized bed was investigated. A Eulerian approach based on the kinetic theory was used to simulate the multiphase thermal flow, and the determined heat transfer coefficients indicated the existence of different heat transfer patterns in the different walls of the blunt body. It was observed that, with increasing inlet gas velocity, the time-area-averaged heat transfer coefficients of the walls of the bodies HC1-HC3 rapidly increased and then gradually decreased. However, the heat transfer patterns in the walls of the bodies HC4 and HC5, which were initially located outside the bed, were different. The peculiar heat transport phenomena were further investigated by statistical methods.

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“…Gas Convection. Many investigators (Zabrodsky, 1966;Botterill and Desai, 1972;Baskakov and Suprun, 1972;Denloye and Botterill, 1978;Canada and McLaughlin, 1978;Adams and Welty, 1979;Glicksman and Decker, 1980;Catipovic et al, 1980Catipovic et al, , 1982Zabrodsky et al, 1981) have stressed the importance of gas-convective heat transfer for fluidization of large particles and elevated pressure operation, and have presented data, models, and correlations.…”

Section: Introductionmentioning

confidence: 99%

A heat transfer model for tubes immersed in gas fluidized beds

Chandran

Chen

1985

AIChE Journal

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A model for local heat transfer between a gas‐fluidzed bed and a submerged tube is proposed based on combined dense‐phase and lean‐phase transport. The heat transfer process during dense‐phase contact at the tube surface is modeled by packet renewal mechanism and the transfer process during lean‐phase contact by fluid convection mechanism. The model predictions show good agreement with experimental local and average heat transfer coefficient data for horizontal tubes.

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Heat transfer in a large-particle fluidized bed with immersed in-line and staggered bundles of horizontal smooth tubes

Cited by 45 publications

References 7 publications

Use of Particle Heat Carriers in the Stirling Engine Concept

Use of Particle Heat Carriers in the Stirling Engine Concept

Wall Heat Transfer of a Small Blunt Body Immersed in a Fluidized Bed

A heat transfer model for tubes immersed in gas fluidized beds

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