Thermodynamics and economic performance comparison of three high-temperature hot rock cavern based energy storage concepts

A. Arabkoohsar and G.B. Andresen

Energy, 2017, vol. 132, issue C, 12-21

Abstract: Employing a thermal energy storage (TES) as a medium for storing power in an energy storage system was recently proposed and analyzed in two different configurations. The first proposal is employing the TES as the boiler of a Rankin cycle based (RCB) energy storage plant. In this configuration, heat production along with power production may or may not be an objective (RCB1 and RCB2). The other proposal is employing the TES as the combustion chamber of an Erickson cycle for energy storage applications (ECB). In this work, a detailed energy, exergy and economic performance comparison between the three systems is accomplished, and the positive and negative features of each of them are addressed. All of the three systems are designed for a 100 MWp wind power in Denmark as the case study. Although it is demonstrated that the application of the ECB system is limited to locations with high heating demand, it outperforms both of the RCB systems due to its very fast response and also the high efficiency that it offers. The overall energy efficiencies of the RCB1, RCB2 and ECB systems are 85%, 32% and 80% while their exergy efficiencies are 47%, 58% and 58%, respectively.

Keywords: Energy storage; Packed bed of rocks; Rankin cycle; Erickson cycle; Thermodynamic analysis; Economic performance (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (10)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544217308290
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:132:y:2017:i:c:p:12-21

DOI: 10.1016/j.energy.2017.05.071

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().