Thermal transport in two-phase gas—solid suspension flow through packed beds
TL;DR: In this article, a method to evaluate the overall Nusselt numbers for heat transfer rates in a packed bed with gas-solid suspension flow through it is presented, including separation of the overall heat transfer coefficient into conduction, convection and radiation contributions and their interactions.
About: This article is published in Powder Technology.The article was published on 1990-07-01. It has received 12 citations till now. The article focuses on the topics: Heat transfer coefficient & Kozeny–Carman equation.
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TL;DR: In this article, the effects of solids loading, particle size and flow Reynolds number on the transient and steady state heat transfer of a gas-solid two-phase mixture flowing through a cylindrical packed bed reactor under the constant wall heat flux conditions were investigated.
25 citations
TL;DR: In this paper, an experimental study on both transient and steady-state heat transfer behavior of a gas-solid two-phase mixture flowing through a packed bed under constant wall temperature conditions was performed.
18 citations
18 citations
TL;DR: In this paper, a dimensionless correlation has been proposed for thermal conductance that predicts the present experimental data for air-sand and air-gypsum heat transfer within an error of ±18%.
16 citations
TL;DR: In this paper, a review of the recent development in the field including both hydrodynamics and heat transfer of gas-solid two-phase mixtures flowing through packed beds is presented.
Abstract: Flow of a gas–solid two-phase mixture through a packed bed is relevant to a number of industrial processes such as heat recovery and filtration of dusty flue gases, iron making in shaft reactors, gas purification, and sorption enhanced reaction processes. In spite of the industrial relevance, little work has been reported in the literature. The limited amount of research work has mainly addressed the macroscopic hydrodynamics in terms of pressure drop and solids hold-ups at the ambient temperature. Very little is done, until fairly recent, on solids motion at the single particle level, hydrodynamics at elevated temperatures and heat transfer. This paper reviews the recent development in the field including both the hydrodynamics and heat transfer of gas–solid two-phase mixtures flowing through packed beds, which is believed to represent the state-of-the-art in the field. The review is not aimed to be exhaustive but rather focused on our own work carried out over the past few years in the Institute of Particle Science & Engineering at the University of Leeds. And some of our results are compared with that of other groups.
14 citations
Cites background or result from "Thermal transport in two-phase gas—..."
...16 lies in the interpretation of controversies of Royston [26] and Balakrishnan and Pei [27–29]....
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...[23], Balakrishnan and Pei [27–29], and Royston [26] under various conditions....
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...Similar observations have been obtained by Royston [26] and Balakrishnan and Pei [27]....
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