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Simulations of energy storage of ultra-low-grade heat with liquid desiccant solutions [dataset] Open Access

Ultra-low-grade heat from industrial processes remains an underutilised energy resource that could significantly aid decarbonisation if suitable recovery and storage technologies are identified. This study assesses the techno-economic feasibility of using liquid desiccant solutions to recover heat between 25 °C and 40 °C from a manufacturing plant producing radiation detectors, store it in a thermochemical form and deliver it to an end user by truck. A comprehensive modelling framework evaluates the performance of aqueous solutions of lithium chloride, calcium chloride and potassium formate under varying operating conditions and system configurations, including systems with single and double regenerators, different flow rates, storage tanks and frequency of the transport cycles. The analysis covers 466,560 design scenarios and investigates energy storage capacity, dehumidification potential and cost-effectiveness. Results indicate that 25% wt. aqueous calcium chloride regenerated in a system with double regenerator using a hot-solution approach offers the best overall trade-off, delivering up to 994 MWh of thermochemical energy per year when heat is available at 40 °C. Multi-criteria decision analysis confirms that this configuration performs optimally for several end users, including archives and indoor swimming pools. Sensitivity analysis identifies transport cost, energy prices and cycling frequency as key economic drivers, with payback periods being highly dependent on these factors. This study demonstrates the potential of liquid desiccant-based thermochemical storage for utilising ultra-low-grade thermal energy in decentralised energy networks, especially in applications where temperature and humidity control are critical.

Descriptions

Resource type

Dataset

Contributors

Creator: Giampieri, Alessandro ¹

¹ Durham University, UK

Funder

Engineering and Physical Sciences Research Council

Research methods

Simulation to estimate the amount of energy that could be stored using liquid desiccant solutions from a manufacturing plant

Other description

Research data in Excel format.

Keyword

Liquid desiccant
Thermochemical energy storage
Ultra-low-grade heat recovery
M-TES
Techno-economic analysis
MCDA

Subject

Thermal engineering

Location

North East, England, United Kingdom

Language

English

Cited in

Identifier

ark:/32150/r19k41zd618
doi:10.15128/r19k41zd618

Rights

Creative Commons Attribution 4.0 International (CC BY)

Publisher

Durham University

Date Created

24/04/2025

File Details

Depositor

A. Giampieri

Date Uploaded

7 November 2025, 13:11:58

Date Modified

10 November 2025, 13:11:07

Audit Status

Audits have not yet been run on this file.

Characterization

File format: zip (ZIP Format)

Mime type: application/zip

File size: 8948083

Last modified: 2025:11:07 13:40:18+00:00

Filename: DataRep_Storage of low-grade heat using liquid desiccant solutions.zip

Original checksum: b639fbf0b7d745ccd000d432d3a85956