Optical property characterization of molten salt mixtures for thermal modeling of volumetrically absorbing solar receiver applications

Melanie Tetreault-Friend; Thomas McKrell; Emilio Baglietto; Antoni Gil; Alexander H. Slocum; Nicolas Calvet

doi:10.1063/1.4984419

Optical property characterization of molten salt mixtures for thermal modeling of volumetrically absorbing solar receiver applications

Melanie Tetreault-Friend
, Thomas McKrell
, Emilio Baglietto
, Antoni Gil
, Alexander H. Slocum
, Nicolas Calvet

Mechanical & Nuclear Engineering

Massachusetts Institute of Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

4 Scopus citations

Abstract

A method for experimentally determining the attenuation coefficient of high temperature semi-transparent liquids for volumetrically absorbing solar receiver applications was developed. The method was used to measure the attenuation coefficient over a broad spectral range in a 40 wt. % KNO₃:60 wt. % NaNO₃ binary nitrate molten salt mixture (solar salt). The measured absorption bands extend over 98% of the re-emission spectrum of the salt, indicating that thermal redistribution within the salt itself via radiative participating media effects is negligible. In addition, the effects of the salt's purity and thermal decomposition on the optical properties were also investigated and the light penetration depth is shown to vary significantly in the presence of impurities. The implications of these results for solar receiver design and modeling are discussed.

Original language	British English
Title of host publication	SolarPACES 2016
Subtitle of host publication	International Conference on Concentrating Solar Power and Chemical Energy Systems
ISBN (Electronic)	9780735415225
DOIs	https://doi.org/10.1063/1.4984419
State	Published - 27 Jun 2017
Event	22nd International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2016 - Abu Dhabi, United Arab Emirates Duration: 11 Oct 2016 → 14 Oct 2016

Publication series

Name	AIP Conference Proceedings
Volume	1850
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	22nd International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2016
Country/Territory	United Arab Emirates
City	Abu Dhabi
Period	11/10/16 → 14/10/16

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

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10.1063/1.4984419

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Tetreault-Friend, M., McKrell, T., Baglietto, E., Gil, A., Slocum, A. H., & Calvet, N. (2017). Optical property characterization of molten salt mixtures for thermal modeling of volumetrically absorbing solar receiver applications. In SolarPACES 2016: International Conference on Concentrating Solar Power and Chemical Energy Systems Article 070005 (AIP Conference Proceedings; Vol. 1850). https://doi.org/10.1063/1.4984419

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title = "Optical property characterization of molten salt mixtures for thermal modeling of volumetrically absorbing solar receiver applications",

abstract = "A method for experimentally determining the attenuation coefficient of high temperature semi-transparent liquids for volumetrically absorbing solar receiver applications was developed. The method was used to measure the attenuation coefficient over a broad spectral range in a 40 wt. \% KNO3:60 wt. \% NaNO3 binary nitrate molten salt mixture (solar salt). The measured absorption bands extend over 98\% of the re-emission spectrum of the salt, indicating that thermal redistribution within the salt itself via radiative participating media effects is negligible. In addition, the effects of the salt's purity and thermal decomposition on the optical properties were also investigated and the light penetration depth is shown to vary significantly in the presence of impurities. The implications of these results for solar receiver design and modeling are discussed.",

author = "Melanie Tetreault-Friend and Thomas McKrell and Emilio Baglietto and Antoni Gil and Slocum, \{Alexander H.\} and Nicolas Calvet",

note = "Publisher Copyright: {\textcopyright} 2017 Author(s).; 22nd International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2016 ; Conference date: 11-10-2016 Through 14-10-2016",

year = "2017",

month = jun,

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Tetreault-Friend, M, McKrell, T, Baglietto, E, Gil, A, Slocum, AH & Calvet, N 2017, Optical property characterization of molten salt mixtures for thermal modeling of volumetrically absorbing solar receiver applications. in SolarPACES 2016: International Conference on Concentrating Solar Power and Chemical Energy Systems., 070005, AIP Conference Proceedings, vol. 1850, 22nd International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2016, Abu Dhabi, United Arab Emirates, 11/10/16. https://doi.org/10.1063/1.4984419

Optical property characterization of molten salt mixtures for thermal modeling of volumetrically absorbing solar receiver applications. / Tetreault-Friend, Melanie; McKrell, Thomas; Baglietto, Emilio et al.
SolarPACES 2016: International Conference on Concentrating Solar Power and Chemical Energy Systems. 2017. 070005 (AIP Conference Proceedings; Vol. 1850).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Optical property characterization of molten salt mixtures for thermal modeling of volumetrically absorbing solar receiver applications

AU - Tetreault-Friend, Melanie

AU - McKrell, Thomas

AU - Baglietto, Emilio

AU - Gil, Antoni

AU - Slocum, Alexander H.

AU - Calvet, Nicolas

PY - 2017/6/27

Y1 - 2017/6/27

N2 - A method for experimentally determining the attenuation coefficient of high temperature semi-transparent liquids for volumetrically absorbing solar receiver applications was developed. The method was used to measure the attenuation coefficient over a broad spectral range in a 40 wt. % KNO3:60 wt. % NaNO3 binary nitrate molten salt mixture (solar salt). The measured absorption bands extend over 98% of the re-emission spectrum of the salt, indicating that thermal redistribution within the salt itself via radiative participating media effects is negligible. In addition, the effects of the salt's purity and thermal decomposition on the optical properties were also investigated and the light penetration depth is shown to vary significantly in the presence of impurities. The implications of these results for solar receiver design and modeling are discussed.

AB - A method for experimentally determining the attenuation coefficient of high temperature semi-transparent liquids for volumetrically absorbing solar receiver applications was developed. The method was used to measure the attenuation coefficient over a broad spectral range in a 40 wt. % KNO3:60 wt. % NaNO3 binary nitrate molten salt mixture (solar salt). The measured absorption bands extend over 98% of the re-emission spectrum of the salt, indicating that thermal redistribution within the salt itself via radiative participating media effects is negligible. In addition, the effects of the salt's purity and thermal decomposition on the optical properties were also investigated and the light penetration depth is shown to vary significantly in the presence of impurities. The implications of these results for solar receiver design and modeling are discussed.

UR - https://www.scopus.com/pages/publications/85023594328

U2 - 10.1063/1.4984419

DO - 10.1063/1.4984419

M3 - Conference contribution

AN - SCOPUS:85023594328

T3 - AIP Conference Proceedings

BT - SolarPACES 2016

T2 - 22nd International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2016

Y2 - 11 October 2016 through 14 October 2016

ER -

Tetreault-Friend M, McKrell T, Baglietto E, Gil A, Slocum AH, Calvet N. Optical property characterization of molten salt mixtures for thermal modeling of volumetrically absorbing solar receiver applications. In SolarPACES 2016: International Conference on Concentrating Solar Power and Chemical Energy Systems. 2017. 070005. (AIP Conference Proceedings). doi: 10.1063/1.4984419

Optical property characterization of molten salt mixtures for thermal modeling of volumetrically absorbing solar receiver applications

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