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Seasonal solar thermal energy storage using thermochemical sorption in domestic dwellings in the UK

Lookup NU author(s): Dr Zhiwei Ma, Dr Huashan Bao, Professor Tony Roskilly



This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


The present paper explored the potential of the seasonal solar thermal energy storage (SSTES) system using ammonia-based chemisorption for domestic application in the UK. The dynamic charging/discharging performance of the SSTES has been simulated using the real weather data with the solar thermal collector models, the domestic heating demand model and the chemisorption model. The selection of working salts has significantly influence on the system design and dynamic performance. The CaCl2-4/8NH3 chemisorption can satisfy almost 100% of space heating demand when using low temperature hating facility during discharging stage, however, due to its relatively higher desorption temperature and limited sunlight available in the Newcastle-upon-Tyne the required solar collectors area exceeds the commonly available space of dwelling roof. The NaBr-0/5.25NH3 chemisorption is only able to contribute 18.6% of heating demand because the temperature of the discharged heat cannot reach the required level for most of the time in the heating season. The best scenario studied was using BaCl2-0/8NH3 chemisorption SSTES (45.2 m3) combined with low temperature heating facilities and a 30.5 m2 solar collector, which can cover about 60.3% of space heating for a dwelling with a heat loss coefficient at 150 W/K.

Publication metadata

Author(s): Ma ZW, Bao HS, Roskilly AP

Publication type: Article

Publication status: Published

Journal: Energy

Year: 2019

Volume: 166

Pages: 213-222

Print publication date: 01/01/2019

Online publication date: 12/10/2018

Acceptance date: 11/10/2018

Date deposited: 12/10/2018

ISSN (print): 0360-5442

ISSN (electronic): 1873-6785

Publisher: Elsevier Ltd


DOI: 10.1016/


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