Study of Turbulent Natural Convection in Vertical Storage Tubes for Supercritical Thermal Energy Storage

Reza Baghaei Lakeh Engineering Technology Department, California State Polytechnic University Pomona, Pomona, California, USACorrespondence[email protected]

Adrienne S. Lavine Mechanical and Aerospace Engineering Department, University of California Los Angeles, Los Angeles, California, USA

H. Pirouz Kavehpour Mechanical and Aerospace Engineering Department, University of California Los Angeles, Los Angeles, California, USA

Richard E. Wirz Mechanical and Aerospace Engineering Department, University of California Los Angeles, Los Angeles, California, USA

Abstract

Heat transfer to storage fluid is a critical subject for any thermal energy storage system. The poor thermal conductivity of the storage medium may lead to insufficient heat transfer and may impair the functionality of the system. Supercritical thermal energy storage systems benefit from turbulent natural convection that dominates the heat transfer mechanism and compensates for the low thermal conductivity of the storage fluids. A computational model is validated and adopted to study the buoyancy-driven flow in vertical storage tubes and the effect of the aspect ratio of the vertical storage tubes on the charge time is investigated.

Notes

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Study of Turbulent Natural Convection in Vertical Storage Tubes for Supercritical Thermal Energy Storage

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Study of Turbulent Natural Convection in Vertical Storage Tubes for Supercritical Thermal Energy Storage

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