A generalized modeling method is introduced and used to evaluate thermal energy storage (TES) performance. The method describes TES performance metrics in terms of three efficiencies: first-law efficiency, second-law efficiency, and storage effectiveness. By capturing all efficiencies in a systematic way, various TES technologies can be compared on an equal footing before more detailed simulations of the components and concentrating solar power (CSP) system are performed. The generalized performance metrics are applied to the particle-TES concept in a novel CSP thermal system design. The CSP thermal system has an integrated particle receiver and fluidized-bed heat exchanger, which uses gas/solid two-phase flow as the heat-transfer fluid, and solid particles as the heat carrier and storage medium. The TES method can potentially achieve high temperatures (>800 °C) and high thermal efficiency economically.
Fluidized Bed Technology for Concentrating Solar Power With Thermal Energy Storage
Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING. Manuscript received June 21, 2012; final manuscript received March 10, 2014; published online May 2, 2014. Editor: Gilles Flamant.
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Ma, Z., Glatzmaier, G., and Mehos, M. (May 2, 2014). "Fluidized Bed Technology for Concentrating Solar Power With Thermal Energy Storage." ASME. J. Sol. Energy Eng. August 2014; 136(3): 031014. https://doi.org/10.1115/1.4027262
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