Abstract
An interconnected porous structure can be utilized to regulate the particle mass flow rate for central Solar particle-heating receivers (SPR) in Concentrated solar power (CSP) systems. The porous structure reduces the speed of the falling particulate material, i.e. increases its residence time within the receiver, thereby allowing a large temperature rise to be achieved in a single pass. An experimentally- validated numerical model of particulate flow within a porous structure was presented in an earlier publication (Lee et al., 2015). In this note, the numerical model is parametrically applied to quantify the effect of various design parameters on the performance of the SPR. The effects of receiver height, porous medium characteristics, and particle size on the mass flux and average particle residence time within the receiver have been quantified. Generalized correlations for the mass flux and average residence time have been developed. These correlations represent the main result of this work; they should aid designers of SPRs in selecting the appropriate range of parameters for their application.
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Taegyu Lee received his B.S. and M.S. degrees in Mechanical and System Design Engineering from Hongik University in 2008 and 2016, respectively. Lee is currently an Engineer at KYUNGWON ENC in Seongnam, Korea. His main research interests are in computational Fluid Dynamics, low-pressure equipment.
Seungwon Shin received his B.S. and M.S. degrees in Mechanical Engineering from Seoul National University, Korea, in 1995 and 1998, respectively. He then received his Ph.D. degree from Georgia Tech in 2002. Dr. Shin is currently a Professor at the School of Mechanical and System Design Engineering at Hongik University in Seoul, Korea. Dr. Shin’s research interests include computational fluid dynamics, multiphase flow, surface tension effect, phase change process.
Said I. Abdel-Khalik received his M.S. and Ph.D. degrees from University of Wisconsin-Madison in 1971 and 1973, respectively. He joined the Georgia Tech faculty as the Georgia Power Distin- guished Professor in 1987. He was appointed to his current position as the Southern Nuclear Distinguished Professor in 1993. His research has covered a wide range of areas in both nuclear and mechanical engineering; including reactor operations and safety, reactor engineering and thermalhydraulics, accident and transient analysis.
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Lee, T., Shin, S. & Abdel-Khalik, S.I. Parametric investigation of particulate flow in interconnected porous media for central particle-heating receiver. J Mech Sci Technol 32, 1181–1186 (2018). https://doi.org/10.1007/s12206-018-0221-x
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DOI: https://doi.org/10.1007/s12206-018-0221-x