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Kinetic of desorption in chemisorption heat pump technology for solar thermal energy storage [dataset] Open Access

In this research, the kinetics of the desorption process within chemisorption heat pump systems are studied, particularly for storing thermal energy. Chemisorption heat pumps, recognised for their heating and cooling capabilities, have recently been explored for their potential in energy storage. This technology stands out for its ability to function as seasonal energy storage by harnessing solar energy. A key aspect under investigation is the behaviour of the desorption process of adsorbent and the release of ammonia for storage. This study employs a mixture of strontium chloride (SrCl2) and expanded graphite as a composite material. It examined the reactor’s kinetics and the heat dissipation within a single core of the reactor, noting that approximately four minutes are required for the heat to fully dissipate in a single core. Its operation at temperatures ranging from 76 °C to 101 °C was studied, which desorbed 1.4 kg of ammonia within 35 to 110 min. Additionally, a solar heat source in a scenario to power the system was investigated, which reveals a surface energy density of 2.5 kWh/m and a levelised cost of energy of £0.375/kWh over a 30-year life-cycle. This cost is 2.5 times higher than that of conventional air–water heat pumps.

Descriptions

Resource type

Dataset

Contributors

Creator: Ma, Zhiwei ¹
Contact person: Ma, Zhiwei ¹
Data collector: Najjaran, Ahmad ¹
Data collector: Bao, Huashan ¹
Data collector: Roskilly, Tony ¹

¹ Durham University, UK

Funder

Engineering and Physical Sciences Research Council

Research methods

Experiment

Other description

Research data in CSV format.

Keyword

Chemisorption
Adsorbent
Kinetics

Subject

Energy storage

Location

Language

English

Cited in

doi:10.1016/j.energy.2025.136197

Identifier

ark:/32150/r22n49t173j
doi:10.15128/r22n49t173j

Rights

Creative Commons Attribution 4.0 International (CC BY)

Publisher

Durham University

Date Created

File Details

Depositor

Z. Ma

Date Uploaded

27 November 2025, 13:11:49

Date Modified

28 November 2025, 08:11:43

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Characterization

File format: zip (ZIP Format)

Mime type: application/zip

File size: 3509

Last modified: 2025:11:27 13:54:57+00:00

Filename: Kinetic of desorption in chemisorption heat pump technology for solar thermal energy storage.zip

Original checksum: 87973828929a2435fbfa58a109f400b1