A critical review of eutectic salt property prediction for latent heat energy storage systems

Ralf Raud; Rhys Jacob; Frank Bruno; Geoffrey Will; Theodore A. Steinberg

doi:10.1016/j.rser.2016.11.274

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A critical review of eutectic salt property prediction for latent heat energy storage systems

Journal article

Peer reviewed

A critical review of eutectic salt property prediction for latent heat energy storage systems

Ralf Raud, Rhys Jacob, Frank Bruno, Geoffrey Will and Theodore A. Steinberg

Renewable & Sustainable Energy Reviews, Vol.70, pp.936-944

2017

DOI: https://doi.org/10.1016/j.rser.2016.11.274

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Abstract

PCM selection

eutectic salt PCM

phase change material

enthalpy of fusion estimation

latent heat thermal storage

latent heat prediction

eutectic composition prediction

density of eutectic salts

thermal conductivity of eutectic salts

According to the SunShot initiative, one sixth of the levelized cost of electricity for Concentrated Solar Thermal Power is thermal energy storage. For this power generation paradigm to be successful, the cost of every subsystem must be dramatically reduced. However, the search space for possible storage mediums is too large for a brute force experimental search to be feasible. Thus, a more refined approach is necessary. In this paper, eutectic salt combinations are considered as storage medium. The state of the selection process for these eutectics is discussed. Various methods to predict the important thermophysical properties are reported and applied to eutectics whose physical properties are known. Based on single salt properties, the density of molten salt eutectics can be predicted, around their melting point, to within 5%. Prediction of the melting point and composition is accurate to within 7%. However, the estimation of latent heat for multi-component eutectics is not always accurate, and requires more work. Finally, the thermal conductivity of multi-component eutectics has not been well studied; further research is required to corroborate the predictions.

Details

Title: A critical review of eutectic salt property prediction for latent heat energy storage systems
Authors: Ralf Raud (Corresponding Author) - Queensland University of Technology
Rhys Jacob (Author) - University of South Australia
Frank Bruno (Author) - University of South Australia
Geoffrey Will (Author) - Queensland University of Technology
Theodore A. Steinberg (Author) - Queensland University of Technology
Publication details: Renewable & Sustainable Energy Reviews, Vol.70, pp.936-944
Publisher: Elsevier Ltd
DOI: 10.1016/j.rser.2016.11.274
ISSN: 1879-0690
Grant note: Australian Renewable Energy Agency; Australian Renewable Energy Agency (ARENA) Australian Solar Thermal Research Initiative
Organisation Unit: School of Science, Technology and Engineering
Language: English
Record Identifier: 99737992902621
Output Type: Journal article

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