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Performance analysis and multi-objective optimisation of layered adsorber for open cycle sorption energy storage [dataset] Open Access

Sorption technology is a promising thermal energy storage method due to its high energy density and minimal energy loss. This study addresses the challenge of unstable outlet temperatures in conventional open-bed water sorption reactors by introducing a scalable, layered reactor design using silica gel. The innovative configuration enables controlled temperature output over extended periods by automatic activation of additional layers based on layer condition in terms of temperature and humidity. Compared to traditional packed-bed designs, the layered reactor improves heat discharge duration by an additional 10 hours. To evaluate reactor performance, a new metric, heat discharge efficiency (HDE), is introduced. This metric complements conventional energy storage density (ESD) by measuring the reactor’s ability to maintain discharge temperatures within a desired range. A systematic analysis of the reactor’s dynamic performance was conducted, considering key operational and structural parameters. Using a Box-Behnken design within a response surface methodology, the study examines both individual and interactive parameter effects. Results indicate that ESD is most affected by airflow rate, while HDE is influenced by layer count, desired outlet temperature, and activation waiting time. Increasing the number of layers from 10 to 20 at 25°C raised HDE from 30% to 90%. A multi-objective optimisation study was performed to determine the best input configuration for maximising both ESD and HDE. Under optimal conditions, the proposed reactor with 180 kg of silica gel achieves a peak ESD of 219.5 kWh/m³ and an HDE of 92.5%, demonstrating its potential for efficient thermal energy storage and discharge of useful heat

Descriptions

Resource type

Dataset

Contributors

Creator: Koley, Susmita ¹
Bao, Huashan ¹
Roskilly, Anthony Paul ¹
Ma, Zhiwei ¹

¹ Durham University, UK

Funder

Engineering and Physical Sciences Research Council

Research methods

Other description

Keyword

Thermal energy storage
Sorption
Open-bed system
Silica gel
Dynamic performance
Multi-objective optimisation

Subject

Heat storage
Absorption
Silica gel

Location

Language

Cited in

Identifier

ark:/32150/r2cf95jb51x
doi:10.15128/r2cf95jb51x

Rights

Creative Commons Attribution 4.0 International (CC BY)

Publisher

Durham University

Date Created

File Details

Depositor

S. Koley

Date Uploaded

16 June 2026, 17:06:14

Date Modified

17 June 2026, 10:06:28

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Audits have not yet been run on this file.

Characterization

File format: vnd.ms-excel (Microsoft Excel 2007+, OpenDocument Text)

Mime type: application/vnd.ms-excel

File size: 189254

Last modified: 2026:06:16 18:15:19+01:00

Filename: Result deposited.xlsx

Original checksum: cf647e0f9715ddad32761092581c63a3