Heat transfer from an immersed vertical tube to a gas fluidized bed

Verma, R.S.; Saxena, S.C.

doi:10.1016/0360-5442(83)90091-9

Cited by 13 publications

(2 citation statements)

References 5 publications

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“…With a horizontal arrangement of heating tubes, an elevated frequency of particle contacts with the tubes enhances the conductive heat transfer, while elevated porosity around the tubes augments convective heat transfer . Several correlations were suggested for different combinations of tube configurations, surface roughness, and particle size. − The spacing between tubes, i.e., pitch, can also be critical. , A horizontal arrangement of the tubes may cause a higher pressure drop compared to a vertical arrangement. In addition, vertical tubes in a fluidized bed system tend to have less erosion and less scale-up challenges compared to horizontal tubes.…”

Section: Heat Transfer and Electric Heating Principlesmentioning

confidence: 99%

Electrically Heated Fluidized Beds─A Review

Ahmed,

Duchesne,

Tan

et al. 2024

Ind. Eng. Chem. Res.

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Fluidized beds heated via fossil fuel combustion have been widely used in industry for various applications. Heating these fluidized beds with clean electricity is emerging as a promising solution to reduce greenhouse gas emissions, improve overall energy efficiency, and for some applications, improve product quality. This review covers the development status of electrically heated fluidized beds (EHFBs) with a variety of heating principles, including Joule heating, induction heating, electromagnetic irradiation, sonication, plasma heating and gas preheating. An analysis of the advantages and disadvantages of these heating principles is presented, along with their suitability for different applications. Current and potential industrial applications using EHFBs for highly diversified processes, from material processing and biomass gasification to space exploration, are highlighted. Each application presents its own unique opportunities and challenges. The selection of a method to deliver electrical heat depends on the specific purpose of each application, materials involved, and the required configuration of the EHFB. Hence, methods to assess key performance indicators are described. To date, only a few applications have been commercialized, mostly for drying and material processing. Recommendations for EHFB advancement are provided so that their full potential can be realized.

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Section: Heat Transfer and Electric Heating Principlesmentioning

confidence: 99%

Electrically Heated Fluidized Beds─A Review

Ahmed,

Duchesne,

Tan

et al. 2024

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…The fluidized-bed experimental facility used in the present series of experiments is described by Verma and Saxena (1983). Here, only the modifications made to adopt it for this work are described.…”

Section: Experimental Equipmentmentioning

confidence: 99%