Transient response simulation of a passive sensible heat storage system and the comparison to a conventional active indirect two-tank unit

Fritz Zaversky, Javier Pérez de Zabalza Asiain and Marcelino Sánchez

Energy, 2017, vol. 139, issue C, 782-797

Abstract: This work presents a 1-D numerical model of a passive sensible thermal energy storage (TES) system using high-temperature concrete as storage medium. It is successfully validated against experimental data obtained from a pilot-scale concrete storage module. A specific Nusselt number correlation is developed providing better accuracy for the specific heat transfer fluid (Therminol VP1) and observed Reynolds numbers, than conventional general purpose heat transfer correlations for forced convection inside tubes. Then, the model is up-scaled to a commercial-sized thermal capacity of 504 MWh, providing grid-independent solutions and cyclic-steady-state initialization values for further use in a general purpose CSP model library. The proposed implementation in Modelica provides a flexible and intuitive simulation tool, which is not limited to a single simulation platform.

Keywords: Concentrated solar power (CSP); Thermal energy storage (TES); Transient response (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:139:y:2017:i:c:p:782-797

DOI: 10.1016/j.energy.2017.07.156

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