Abstract
Energy storage technologies are usually a strategic and necessary component for the efficient utilization of renewable energy sources and energy conservation. Their use is important to overcome energetic and environmental issues. Thermal energy storage (TES) serves at least three different purposes: (1) energy conservation and substitution (by using natural energy sources and waste energy), (2) energy peak shifting (from more expensive daytime to less expensive nighttime rates), and (3) electricity conservation (by operating efficient devices at full load instead of part load to reduce peak power demands and increase efficiency of electricity use). Numerous TES systems have received attention for practical applications. Underground thermal energy storage systems may be divided into two groups: (1) closed storage systems, so-called borehole TES, in which a heat transport fluid (water in most cases) is pumped through heat exchangers in the ground and (2) open systems where groundwater is pumped out of the ground and then injected into the ground using wells (aquifer TES) or in underground caverns. In this study, the thermal resistance characteristics of borehole heat exchangers of borehole TES at University of Ontario Institute of Technology (UOIT) are investigated. In this regard, the ground thermal properties of Oshawa are studied, and a comparison of different methods for determining such thermal resistances is made for practical applications. Finally, a thermal response test mode for BTES is illustrated.
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Acknowledgment
The authors gratefully acknowledge the financial support from the TUBITAK, Scientific and Technological Research Council of Turkey, Turkish Academy of Sciences, and the assistance from the University of Ontario Institute of Technology.
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Kizilkan, Ö., Dincer, I. (2014). Evaluation of Thermal Characteristics of a Borehole Thermal Energy Storage System. In: Dincer, I., Midilli, A., Kucuk, H. (eds) Progress in Exergy, Energy, and the Environment. Springer, Cham. https://doi.org/10.1007/978-3-319-04681-5_34
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DOI: https://doi.org/10.1007/978-3-319-04681-5_34
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