Dynamic Performance Analysis of Large-Scale Packed Bed Truncated Conical Thermal Energy Storage

Shobhana Singh, Kim Sørensen

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Abstrakt

In the present paper, a high-temperature packed bed energy storage system of volume 175,000m3 is numerically investigated. The system is a underground packed bed of truncated conical shape, which comprises of rocks as a storage medium and air as a heat transfer fluid. A one-dimensional, two-phase model is developed to simulate the transient behavior of the storage. The developed model is used to conduct a parametric study with a wide range of design parameters to investigate the change in performance during both charging and discharging operation. Results show that the model satisfactorily predicts the dynamic behavior, and the truncated conical shaped storage with a rock diameter of 3cm, insulation thickness up to 0.6m and charging-discharging rate of 553kg/s leads to lower thermal losses and higher energy efficiencies. The paper provides useful insight into the transient performance and efficiency of a large-scale packed bed energy storage system within the range of parameters investigated.
OriginalsprogEngelsk
TitelProceedings of ASME - JSME - KSME 2019 Joint Fluids Engineering Conference : Fluid Mechanics
Antal sider8
ForlagAmerican Society of Mechanical Engineers
Publikationsdatojul. 2019
ISBN (Elektronisk)9780791859025
DOI
StatusUdgivet - jul. 2019
BegivenhedASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference - San Francisco, USA
Varighed: 28 jul. 20191 aug. 2019

Konference

KonferenceASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference
LandUSA
BySan Francisco
Periode28/07/201901/08/2019

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Citationsformater

Singh, S., & Sørensen, K. (2019). Dynamic Performance Analysis of Large-Scale Packed Bed Truncated Conical Thermal Energy Storage. I Proceedings of ASME - JSME - KSME 2019 Joint Fluids Engineering Conference: Fluid Mechanics American Society of Mechanical Engineers. https://doi.org/10.1115/AJKFluids2019-5680