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

Shobhana Singh, Kim Sørensen

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

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.
Original languageEnglish
Title of host publicationProceedings of ASME - JSME - KSME 2019 Joint Fluids Engineering Conference : Fluid Mechanics
Number of pages8
PublisherAmerican Society of Mechanical Engineers
Publication dateJul 2019
ISBN (Electronic)9780791859025
DOIs
Publication statusPublished - Jul 2019
EventASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference - San Francisco, United States
Duration: 28 Jul 20191 Aug 2019

Conference

ConferenceASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference
CountryUnited States
CitySan Francisco
Period28/07/201901/08/2019

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