Consecutive Operation of a Rock Bed Thermal Energy Storage - CFD Analysis

DOI

10.2991/ahe.k.220301.009How to use a DOI?

Keywords

High Temperature Thermal Energy Storage (HT-TES); packed bed; rock-bed; Computational fluid dynamics (CFD); COMSOL Introduction (Heading 1)

Abstract

High temperature thermal energy storage units can provide the flexibility required, by storing the excess energy in the form of heat and suppling it back either into the electric grid or as heat to any energy intense industrial process. DTU Energy has constructed a vertical flow high temperature thermal energy storage unit, which uses air as a heat transfer fluid and Swedish diabase rocks as a storage medium. This storage unit can store heat at a temperature of up to 675℃ and has a thermal capacity of 1 MWh_th. The main objective of this study is to present an experimentally validated 2D time dependent computational fluid dynamics model of the rock-bed thermal energy storage developed in COMSOL Multiphysics. The results show good agreement between experimental and model data. Moreover, the overall efficiency is increased when subjected to consecutive cycling.

Copyright

© 2022 The Authors. Published by Atlantis Press International B.V.

Open Access

This is an open access article under the CC BY-NC license.

Download article (PDF)

TY  - CONF
AU  - Yousif Muhammad
AU  - Kai Knobloch
AU  - Henrik Lund Frandsen
AU  - Kurt Engelbrecht
PY  - 2022
DA  - 2022/03/03
TI  - Consecutive Operation of a Rock Bed Thermal Energy Storage - CFD Analysis
BT  - Proceedings of the International Renewable Energy Storage Conference 2021 (IRES 2021)
PB  - Atlantis Press
SP  - 93
EP  - 99
SN  - 2589-4943
UR  - https://doi.org/10.2991/ahe.k.220301.009
DO  - 10.2991/ahe.k.220301.009
ID  - Muhammad2022
ER  -