Abstract
In the first chapter of the book, we briefly discussed and classified various approaches of thermal energy storage and explained that, no matter under which class of technique, long-term heat and cold storage systems can be of great value for enhancing the resiliency yet cost-effectiveness of energy systems. The best example for long-term thermal energy storage is seasonal heat storage, where excess heat of the summer, either solar heat or any excess heat flow of supply chains like district heating systems which is not of use, is stored to be utilized during the winter. Similarly, a seasonal cold storage unit could be used to store the cold energy of the winter for cooling purposes during the warm months of the year. This chapter is dedicated to the concept of seasonal thermal energy storage (STES) and aims to present a comprehensive introduction of various STES possibilities in terms of method of storage (i.e., sensible, latent, or thermochemical), their pros and cons, the states of the art, and some of the largest realized and ongoing projects in this context around the world, etc. In addition to this, a thorough mathematical model section is presented in which step-by-step formulations for exergy and energy analyses of STESs in different categories are brought. Then, to show how the presented formulas could be used for the analysis of the performance of a STES, a borehole storage unit in Aalborg city in Denmark is simulated as a case study. In the end, the authors give some final words regarding how they see the outlook of STES systems and their position in future energy systems in different time frames.
Original language | English |
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Title of host publication | Future Grid-Scale Energy Storage Solutions : Mechanical and Chemical Technologies and Principles |
Editors | Ahmad Arabkoohsar |
Publisher | Elsevier |
Publication date | 2023 |
Pages | 215-257 |
Chapter | 6 |
ISBN (Print) | 9780323907866 |
ISBN (Electronic) | 9780323914406 |
DOIs | |
Publication status | Published - 2023 |