Molten salt power towers operating at 600–650 °C: Salt selection and cost benefits

Turchi, Craig S.; Vidal, Judith; Bauer, Matthew

doi:10.1016/j.solener.2018.01.063

Molten salt power towers operating at 600–650 °C: Salt selection and cost benefits

Journal Article · Wed Mar 14 00:00:00 EDT 2018 · Solar Energy

DOI:https://doi.org/10.1016/j.solener.2018.01.063· OSTI ID:1429606

Turchi, Craig S. ^[1]; Vidal, Judith ^[1]; Bauer, Matthew ^[2]

National Renewable Energy Lab. (NREL), Golden, CO (United States)
ManTech International, Washington, DC (United States)

This analysis examines the potential benefit of adopting the supercritical carbon dioxide (sCO₂) Brayton cycle at 600-650 degrees C compared to the current state-of-the-art power tower operating a steam-Rankine cycle with solar salt at approximately 574 degrees C. The analysis compares a molten-salt power tower configuration using direct storage of solar salt (60:40 wt% sodium nitrate: potassium nitrate) or single-component nitrate salts at 600 degrees C or alternative carbonate- or chloride-based salts at 650 degrees C.

Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)

Grant/Contract Number:: AC36-08GO28308; FG36-08GO18149

OSTI ID:: 1429606

Alternate ID(s):: OSTI ID: 1776192

Report Number(s):: NREL/JA--5500-69070

Journal Information:: Solar Energy, Journal Name: Solar Energy Journal Issue: C Vol. 164; ISSN 0038-092X

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Thermal Conductivity of Molten Carbonates with Dispersed Solid Oxide from Differential Scanning Calorimetry Kandhasamy, Sathiyaraj; Støre, Anne; Haarberg, Geir Martin Materials, Vol. 12, Issue 9 https://doi.org/10.3390/ma12091486	journal	May 2019
Review of supercritical CO 2 power cycles integrated with CSP Yin, Jun‐Ming; Zheng, Qiu‐Yun; Peng, Zhao‐Rui International Journal of Energy Research https://doi.org/10.1002/er.4909	journal	December 2019
Modeling the Total Ternary Phase Diagram of NaNO3–KNO3–NaNO2 Using the Binary Subsystems Data Delise, T.; Tizzoni, A. C.; Votyakov, E. V. International Journal of Thermophysics, Vol. 41, Issue 1 https://doi.org/10.1007/s10765-019-2577-2	journal	November 2019
Thermal energy grid storage using multi-junction photovoltaics Amy, Caleb; Seyf, Hamid Reza; Steiner, Myles A. Energy & Environmental Science, Vol. 12, Issue 1 https://doi.org/10.1039/c8ee02341g	journal	January 2019
A Critical Review of Fluoride Salt Heat Transfer Britsch, Karl; Anderson, Mark Nuclear Technology https://doi.org/10.1080/00295450.2019.1682418	journal	December 2019
Viability Assessment of a Concentrated Solar Power Tower With a Supercritical CO2 Brayton Cycle Power Plant Alsagri, Ali Sulaiman; Chiasson, Andrew; Gadalla, Mohamed Journal of Solar Energy Engineering, Vol. 141, Issue 5 https://doi.org/10.1115/1.4043515	journal	April 2019

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14 SOLAR ENERGY
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Molten salt power towers operating at 600–650 °C: Salt selection and cost benefits

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