Sliding flow method for exergetically efficient packed bed thermal storage

Bindra, Hitesh; Bueno, Pablo; Morris, Jeffrey F.

doi:10.1016/j.applthermaleng.2013.12.028

Cited by 39 publications

(14 citation statements)

References 10 publications

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“…In the storage cycle, hot HTF from heat exchanger enters from the one end and during the recovery cycle HTF enters at ambient temperature from the other end. More details on the model descriptions can be obtained from previous references (Bindra et al, 2013(Bindra et al, , 2014. The outlet temperature of HTF during the recovery cycle is then used to compute the exergy as described in the Eq.…”

Section: Packed Bed Of Solid Rocksmentioning

confidence: 99%

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Exergy analysis of thermal energy storage options with nuclear power plants

Edwards

Bindra

Sabharwall

2016

Annals of Nuclear Energy

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a b s t r a c tStoring excess thermal energy in a storage media, that can later be extracted during peak-load times is one of the better economic options for nuclear power in future. Thermal energy storage integration with light-water cooled and advanced nuclear power plants is analyzed to assess technical feasibility of different options. Various choices of storage media considered in this study include molten salts, synthetic heat transfer fluids, and packed beds of solid rocks or ceramics. Due to limitations of complex process conditions and safety requirements there are only few combinations which have potential integration possibilities. In-depth quantitative assessment of these integration possibilities are then analyzed using exergy analysis and energy density models. The exergy efficiency of thermal energy storage systems is quantified based on second law thermodynamics. This study identifies, examines, and compares different energy storage options for integration with modular NPPs, with the calculated values of energy density and exergy efficiency. The thermal energy storage options such as synthetic heat transfer fluids perform well for light-water cooled NPPs, whereas liquid storage salt show better performance with advanced NPPs as compared to other options.

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Section: Packed Bed Of Solid Rocksmentioning

confidence: 99%

“…The fractional exergy recovery or exergy efficiency of the storage system is computed for evaluating the economics. The basic model of converting dynamic temperature output information from storage system to exergy parameters has been detailed previously (Bindra et al, 2014).…”

Section: Exergy Modelingmentioning

confidence: 99%

Exergy analysis of thermal energy storage options with nuclear power plants

Edwards

Bindra

Sabharwall

2016

Annals of Nuclear Energy

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show abstract

“…Bindra et al [33] conducted thermal analysis and exergy evaluation of packed bed thermal storage systems, and proposed that for packed beds, sensible heat storage systems can provide much higher exergy recovery as compared to phase change material (PCM) storage systems under similar high temperature storage conditions. Furthermore, they [34] developed the sliding flow method to decouple thermal behavior and pressure drop effects and improve the exergetic efficiency. It is significant to analyze the relation between exergy and convective heat transfer.…”

Section: Introductionmentioning

confidence: 99%

Convective heat transfer optimization in a circular tube based on local exergy destruction minimization

Wang

Liu

Fang

et al. 2015

International Journal of Heat and Mass Transfer

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“…In order to understand how a fluidized bed installation works, experiments and numerical simulations are usually performed using small scale experimental facilities [1,2], where under isothermal conditions the granular flow is frequently modeled using a standard EulereEuler approach. This model is also used as the basic approach for modeling other engineering processes like condensation [3] or energy storage in packed beds [4], where the experiments are frequently realized under isothermal conditions. Nowadays, the fluidized bed boiler design can be supported by the computational fluid dynamics (CFD).…”

Section: Introductionmentioning

confidence: 99%