On the performance of ground coupled seasonal thermal energy storage for heating and cooling: A Canadian context

Fong, M. and Alzoubi, M.A. and Kurnia, J.C. and Sasmito, A.P. (2019) On the performance of ground coupled seasonal thermal energy storage for heating and cooling: A Canadian context. Applied Energy, 250. pp. 593-604.

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Abstract

This study examines the feasibility of capturing and storing the coolth from the winter and the heat from the summer in the ground by utilizing the groundwater's ability to phase change as a storage media. A novel system that implements a bayonet tube heat exchanger is proposed in this study due to it's simple design and ease of installation using a single drill hole. A lab-scale experiment of a thermally controlled ground simulator was conducted to provide a proof-of-concept of the energy storage mechanism. A conjugate, multiphase heat transfer model was developed taking into account conversation of mass, momentum and energy and validated using the experimental results. The model framework is then extended to study the energy storage potential at full scale for four Canadian cities. The first set uses an averaged sinusoidal temperature profile, while the other set uses hourly temperatures from weather monitoring stations. Results of the study showed the long-term aggregated energy extraction was similar between both sets, however, over the short-term the results are more chaotic due to the nature of the weather. The system is thus best suited as a pre-heating or pre-cooling stage, making use of low-grade heat/cooling to decrease the need to use high grade energy (electricity or natural gas) over which the operator has stronger control. © 2019

Item Type: Article
Impact Factor: cited By 3
Uncontrolled Keywords: Electric energy storage; Groundwater; Heat exchangers; Heat storage; Heat transfer; Military equipment; Phase change materials, Bayonet tubes; Latent heat energy storage; Passive energy; Pore waters; Seasonal energy storages, Storage (materials), cooling; design; energy storage; heat transfer; heating; installation; latent heat flux; performance assessment; pipe; porewater; seasonality, Canada
Depositing User: Ms Sharifah Fahimah Saiyed Yeop
Date Deposited: 27 Aug 2021 08:26
Last Modified: 27 Aug 2021 08:26
URI: http://scholars.utp.edu.my/id/eprint/24936

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