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http://dx.doi.org/10.7464/ksct.2020.26.1.65

Attrition and Heat Transfer Characteristics of Fluidized Bed Materials for a Solar Hybrid Process  

Kim, Hyung Woo (Department of Mineral resources and energy engineering, Jeonbuk National University)
Lee, Doyeon (Greenhouse Gas Laboratory, Korea Institute of Energy Research)
Nam, Hyungseok (Greenhouse Gas Laboratory, Korea Institute of Energy Research)
Hong, Young Wan (Department of Mineral resources and energy engineering, Jeonbuk National University)
Seo, Su Been (Department of Mineral resources and energy engineering, Jeonbuk National University)
Go, Eun Sol (Department of Mineral resources and energy engineering, Jeonbuk National University)
Kang, Seo Yeong (Department of Mineral resources and energy engineering, Jeonbuk National University)
Lee, See Hoon (Department of Mineral resources and energy engineering, Jeonbuk National University)
Publication Information
Clean Technology / v.26, no.1, 2020 , pp. 65-71 More about this Journal
Abstract
Various solar hybrid energy conversion processes, which have both the advantages of renewable energy sources and fossil energy sources, have been developed in the world because stable and predictable energy supplies, such as electricity and natural gas, are necessary for modern societies. In particular, a solar hybrid energy conversion process based on a dual fluidized bed process concept has been expected as the promising solution for sustainable energy supply via thermochemical conversions, such as pyrolysis, combustion, gasification, and so on, because solar thermal energy could be captured and stored in fluidized bed materials. Therefore, the attrition and heat transfer characteristics of silicon carbide and alumina particles used for fluidized bed materials for the solar hybrid energy conversion process were studied in an ASTM D5757 reactor and a bubbling fluidized bed reactor with 0.14m diameter and 2m height. These characteristics of novel fluidized bed materials were compared with those of sand particles which have widely been used as a fluidized bed material in various commercial fluidized bed reactors. The attrition resistances of silicon carbide and alumina particles were higher than those of sand particles while the average values of heat transfer coefficient in the bubbling fluidized bed reactor were in the range of 125 ~ 152 W m-2K-1.
Keywords
Heat transfer; Attrition; Solar hybrid process; Fluidized material;
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Times Cited By KSCI : 6  (Citation Analysis)
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