Fluidized Bed Technology for Concentrating Solar Power With Thermal Energy Storage

Zhiwen Ma, Greg Glatzmaier, Mark Mehos

Research output: Contribution to journalArticlepeer-review

89 Scopus Citations


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.

Original languageAmerican English
Article numberArticle No. SOL-12-1161
Number of pages9
JournalJournal of Solar Energy Engineering, Transactions of the ASME
Issue number3
StatePublished - Aug 2014

NREL Publication Number

  • NREL/JA-5500-55629


  • concentrating solar power
  • fluidized bed
  • solid particle
  • thermal energy storage


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