Lifetime modeling for a supercritical CO2-molten salt CSP power block
Abstract
To achieve higher efficiency in the next generation of concentrating solar power (CSP) plants, higher temperatures are needed, which will challenge the materials. One scenario would include molten chloride salts for thermal storage and supercritical CO2 (sCO2) for the power block and operating temperatures above 700°C to achieve at least 50% efficiency. For the high pressure (20-30 MPa) sCO2 conditions, high strength Ni-based alloys will be required above 700°C and an extensive experimental project has confirmed good sCO2 compatibility for alloys 625, 740H and 282. The data set generated enables more accurate lifetime predictions for 30-year service. Compatibility testing with K-Mg-Na chloride salts has just begun. Initial isothermal capsule results indicate there are promising combinations of salt chemistry, temperature and alloy composition. However, flowing salt testing is needed to evaluate compatibility, which is in progress.
- Authors:
-
- ORNL
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- OSTI Identifier:
- 1546548
- DOE Contract Number:
- AC05-00OR22725
- Resource Type:
- Conference
- Resource Relation:
- Journal Volume: 2126; Conference: SolarPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems - Casablanca, , Morocco - 10/2/2018 8:00:00 AM-10/5/2018 8:00:00 AM
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Pint, Bruce A., Raiman, Stephen S., and Keiser, James. Lifetime modeling for a supercritical CO2-molten salt CSP power block. United States: N. p., 2019.
Web. doi:10.1063/1.5117668.
Pint, Bruce A., Raiman, Stephen S., & Keiser, James. Lifetime modeling for a supercritical CO2-molten salt CSP power block. United States. https://doi.org/10.1063/1.5117668
Pint, Bruce A., Raiman, Stephen S., and Keiser, James. 2019.
"Lifetime modeling for a supercritical CO2-molten salt CSP power block". United States. https://doi.org/10.1063/1.5117668. https://www.osti.gov/servlets/purl/1546548.
@article{osti_1546548,
title = {Lifetime modeling for a supercritical CO2-molten salt CSP power block},
author = {Pint, Bruce A. and Raiman, Stephen S. and Keiser, James},
abstractNote = {To achieve higher efficiency in the next generation of concentrating solar power (CSP) plants, higher temperatures are needed, which will challenge the materials. One scenario would include molten chloride salts for thermal storage and supercritical CO2 (sCO2) for the power block and operating temperatures above 700°C to achieve at least 50% efficiency. For the high pressure (20-30 MPa) sCO2 conditions, high strength Ni-based alloys will be required above 700°C and an extensive experimental project has confirmed good sCO2 compatibility for alloys 625, 740H and 282. The data set generated enables more accurate lifetime predictions for 30-year service. Compatibility testing with K-Mg-Na chloride salts has just begun. Initial isothermal capsule results indicate there are promising combinations of salt chemistry, temperature and alloy composition. However, flowing salt testing is needed to evaluate compatibility, which is in progress.},
doi = {10.1063/1.5117668},
url = {https://www.osti.gov/biblio/1546548},
journal = {},
issn = {0094--243X},
number = ,
volume = 2126,
place = {United States},
year = {Mon Jul 01 00:00:00 EDT 2019},
month = {Mon Jul 01 00:00:00 EDT 2019}
}
Works referenced in this record:
Effect of pressure on supercritical CO 2 compatibility of structural alloys at 750 °C : Effect of pressure on supercritical CO
journal, April 2016
- Pint, B. A.; Brese, R. G.; Keiser, J. R.
- Materials and Corrosion, Vol. 68, Issue 2
Thermal energy storage using chloride salts and their eutectics
journal, October 2016
- Myers, Philip D.; Goswami, D. Yogi
- Applied Thermal Engineering, Vol. 109
Initial Assessment of Ni-Base Alloy Performance in 0.1 MPa and Supercritical CO2
journal, September 2015
- Pint, B. A.; Keiser, J. R.
- JOM, Vol. 67, Issue 11
Supercritical CO2 Brayton cycles for solar-thermal energy
journal, November 2013
- Iverson, Brian D.; Conboy, Thomas M.; Pasch, James J.
- Applied Energy, Vol. 111
On the breakaway oxidation of Fe9Cr1Mo steel in high pressure CO2
journal, May 2017
- Gong, Y.; Young, D. J.; Kontis, P.
- Acta Materialia, Vol. 130
Development of a Fabricable Gamma Prime (γ�) Strengthened Superalloy
conference, January 2008
- Pike, L. M.
- Superalloys 2008 (Eleventh International Symposium)
Compatibility of structural materials with fusion reactor coolant and breeder fluids
journal, December 1979
- DeVan, J. H.
- Journal of Nuclear Materials, Vol. 85-86
Compatibility of an FeCrAl alloy with flowing Pb-Li in a thermal convection loop
journal, August 2017
- Pawel, Steven J.; Unocic, Kinga A.
- Journal of Nuclear Materials, Vol. 492
Molten nitrate salts at 600 and 680°C: Thermophysical property changes and corrosion of high-temperature nickel alloys
journal, May 2014
- McConohy, Geoff; Kruizenga, Alan
- Solar Energy, Vol. 103
Benchmarking supercritical carbon dioxide cycles against steam Rankine cycles for Concentrated Solar Power
journal, March 2015
- Cheang, V. T.; Hedderwick, R. A.; McGregor, C.
- Solar Energy, Vol. 113
Comparison of Oxidation Behavior and Electrical Properties of Doped NiO- and Cr2O3-Forming Alloys for Solid-Oxide, Fuel-Cell Metallic Interconnects
journal, September 2006
- Brady, M. P.; Pint, B. A.; Lu, Z. G.
- Oxidation of Metals, Vol. 65, Issue 3-4
Dissolution kinetics of steels exposed in lead-lithium and lithium environments
journal, September 1992
- Tortorelli, P. F.
- Journal of Nuclear Materials, Vol. 191-194
Hot corrosion behavior of commercial alloys in thermal energy storage material of molten MgCl2/KCl/NaCl under inert atmosphere
journal, September 2018
- Ding, Wenjin; Shi, Hao; Xiu, Yanlei
- Solar Energy Materials and Solar Cells, Vol. 184
Compatibility Assessment of Advanced Stainless Steels in Sodium
journal, January 2012
- Pawel, S. J.
- Fusion Science and Technology, Vol. 61, Issue 1T
The supercritical thermodynamic power cycle
journal, September 1968
- Feher, E. G.
- Energy Conversion, Vol. 8, Issue 2
Microstructural stability and mechanical properties of a new nickel-based superalloy
journal, August 2003
- Zhao, Shuangqun; Xie, Xishan; Smith, Gaylord D.
- Materials Science and Engineering: A, Vol. 355, Issue 1-2
Corrosion resistance of alumina-forming alloys against molten chlorides for energy production. I: Pre-oxidation treatment and isothermal corrosion tests
journal, July 2017
- Gomez-Vidal, J. C.; Fernandez, A. G.; Tirawat, R.
- Solar Energy Materials and Solar Cells, Vol. 166