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Title: Development and prototype testing of MgCl 2 /graphite foam latent heat thermal energy storage system

Abstract

Composites of graphite foam infiltrated with a magnesium chloride phase-change material have been developed as high-temperature thermal energy storage media for concentrated solar power applications. This storage medium provides a high thermal energy storage density, a narrow operating temperature range, and excellent heat transfer characteristics. In this study, experimental investigations were conducted on laboratory-scale prototypes with magnesium chloride/graphite foam composite as the latent heat thermal energy storage system. Prototypes were designed and built to monitor the melt front movement during the charging/discharging tests. A test loop was built to ensure the charging/discharging of the prototypes at temperatures > 700 degrees C. Repeated thermal cycling experiments were carried out on the fabricated prototypes, and the experimental temperature profiles were compared to the predicted results from numerical simulations using COMSOL Multiphysics software. Experimental results were found to be in good agreement with the simulations to validate the thermal models.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE) - Office of Solar Energy Technology (SETO) - SunShot Initiative
OSTI Identifier:
1426774
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Solar Energy; Journal Volume: 159; Journal Issue: C
Country of Publication:
United States
Language:
English

Citation Formats

Singh, Dileep, Yu, Wenhua, Zhao, Weihuan, Kim, Taeil, France, David M., and Smith, Roger K.. Development and prototype testing of MgCl 2 /graphite foam latent heat thermal energy storage system. United States: N. p., 2018. Web. doi:10.1016/j.solener.2017.10.084.
Singh, Dileep, Yu, Wenhua, Zhao, Weihuan, Kim, Taeil, France, David M., & Smith, Roger K.. Development and prototype testing of MgCl 2 /graphite foam latent heat thermal energy storage system. United States. doi:10.1016/j.solener.2017.10.084.
Singh, Dileep, Yu, Wenhua, Zhao, Weihuan, Kim, Taeil, France, David M., and Smith, Roger K.. Mon . "Development and prototype testing of MgCl 2 /graphite foam latent heat thermal energy storage system". United States. doi:10.1016/j.solener.2017.10.084.
@article{osti_1426774,
title = {Development and prototype testing of MgCl 2 /graphite foam latent heat thermal energy storage system},
author = {Singh, Dileep and Yu, Wenhua and Zhao, Weihuan and Kim, Taeil and France, David M. and Smith, Roger K.},
abstractNote = {Composites of graphite foam infiltrated with a magnesium chloride phase-change material have been developed as high-temperature thermal energy storage media for concentrated solar power applications. This storage medium provides a high thermal energy storage density, a narrow operating temperature range, and excellent heat transfer characteristics. In this study, experimental investigations were conducted on laboratory-scale prototypes with magnesium chloride/graphite foam composite as the latent heat thermal energy storage system. Prototypes were designed and built to monitor the melt front movement during the charging/discharging tests. A test loop was built to ensure the charging/discharging of the prototypes at temperatures > 700 degrees C. Repeated thermal cycling experiments were carried out on the fabricated prototypes, and the experimental temperature profiles were compared to the predicted results from numerical simulations using COMSOL Multiphysics software. Experimental results were found to be in good agreement with the simulations to validate the thermal models.},
doi = {10.1016/j.solener.2017.10.084},
journal = {Solar Energy},
number = C,
volume = 159,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2018},
month = {Mon Jan 01 00:00:00 EST 2018}
}