Journal
ENERGY
Volume 162, Issue -, Pages 1052-1061Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2018.08.086
Keywords
Solar chimney; Efficiency; Output power; Numerical simulation; Renewable energy
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In this study, the influences of geometrical properties on a solar chimney were investigated numerically by applying the K- epsilon turbulence model, continuity, momentum, and energy equations in the 3D finite volume approach inside a solar chimney power plant. The following variables should be involved: collector radius (R-cl), collector height (H-cl), chimney height (H-ch), chimney radius (R-ch), and heat flux (q). The effects of changes in these variables on temperature, velocity, pressure distributions, efficiency, and output power were investigated. The results indicated that output power and solar chimney efficiency have positive relationships with chimney height and collector radius but a negative one with collector height In addition, it was found that the parameter of chimney radius has an optimum range which has the maximum values for efficiency and output power. (C) 2018 Elsevier Ltd. All rights reserved.
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