CUED Publications database

Experimental modelling of seasonal thermal energy storage within unconfined aquifer (Ates)

Charlwood, SP and Madabhushi, SPG (2021) Experimental modelling of seasonal thermal energy storage within unconfined aquifer (Ates). Canadian Geotechnical Journal, 58. pp. 1135-1147. ISSN 0008-3674

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Abstract

Aquifer thermal energy storage systems allow the storage of excess heat from summer for use during the winter. This investigation looks at the suitability of a small-scale experimental model as a method for simulating the behaviour of full-scale unconfined aquifers for thermal storage. Thermal energy was stored via the injection of 40, 60, and 80 °C water for a period of 1000 s with extraction being between 1000 and 2000 s. Furthermore, periods of storage between injection and extraction were introduced to simulate potential full-scale heating and cooling demand scenarios. Thermal efficiencies were found to be 60% reducing to 53% with the addition of a 1000 s storage period. Furthermore, for the model tested in this investigation the temperature of the injected water was found to have little influence upon the efficiency.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div D > Geotechnical and Environmental
Depositing User: Unnamed user with email sms67@cam.ac.uk
Date Deposited: 17 Jul 2021 21:45
Last Modified: 09 Sep 2021 02:03
DOI: 10.1139/cgj-2020-0208